JP6110116B2 - Gas component adsorption tube, gas component collection device, and gas component collection method. - Google Patents

Description

  The present invention relates to a gas component adsorption tube, a gas component collection device, and a gas component collection method for adsorbing and collecting a specific component in a gas sample.

  Patent Document 1 discloses a gas component adsorption tube including an adsorption tube main body and an adsorbent enclosed inside an intermediate portion of the adsorption tube main body. In this gas component adsorption tube, both sides of the adsorbent are sandwiched between a pair of glass wools through which gas can freely pass. And the stopper which prevents the position shift of adsorption agent and glass wool is provided in the inside of an adsorption pipe main part.

  This gas component adsorption tube adsorbs a specific component in a gas sample as follows.

  First, a container (such as a Tedlar bag) containing a gas sample is connected to one through-hole of the adsorption pipe body, and a suction pump is connected to the other through-hole of the adsorption pipe body.

  Next, the suction pump is driven, the gas sample in the container is sucked, and the gas sample is passed through the inside of the adsorption tube body. At this time, adsorption of the specific component in the gas sample is performed on the adsorbent.

JP-A-10-212224

  By the way, in the gas component adsorption tube of the above-mentioned patent document 1, since the adsorbent is sandwiched and held by the pair of glass wool from both sides, the adsorbent is tightly packed between the pair of glass wool, and the airflow resistance is large. It is a space. Further, since glass wool itself is clogged with nectar, glass wool itself has a large ventilation resistance.

  Therefore, in the gas component adsorption tube of Patent Document 1, in order to pass a gas sample through the adsorption tube body, a pump having a suction force larger than the ventilation resistance due to the densely packed adsorbent and glass wool must be used. It was.

  Accordingly, in view of the above circumstances, the present invention facilitates the passage of a gas sample, and adsorbs and collects a specific component in the gas sample, collects the gas component, and collects the gas component. The problem is to propose a method.

The gas component adsorption tube of the present invention that solves the above problems includes an adsorption tube main body for allowing a gas sample to pass therethrough, a pair of holding members disposed in the adsorption tube main body and having air permeability, and the pair of holding members. A holding space formed in between, and a number of particulate adsorbents that are arranged in the holding space and adsorb specific components in the gas sample, and the holding space is raised from the main body of the adsorption tube. in the state, provided as diffusion space is formed between the upper side of the retaining member positioned above the plurality of grain child sorbent to its upper side, the plurality of particulate sorbents, the suction tube When the gas sample is introduced from the lower opening of the adsorption tube main body in the state where the main body is raised and gathered on the lower holding member side of the holding space, It extends to the space for diffusion .

  Further, it is preferable that both or one of the pair of holding members is movable within the adsorption tube main body.

  The holding member is preferably a wire mesh.

Gaseous component collection apparatus of the present invention for solving the aforementioned problems is a gas carrying component suction tube, and a introducer for introducing a gas body sample in this gas component suction pipes, the gas component adsorbed tube, the An adsorption tube main body for allowing a gas sample to pass through, a pair of holding members arranged in the adsorption tube main body and having air permeability, a holding space formed between the pair of holding members, and in the holding space A plurality of particulate adsorbents that adsorb specific components in the gas sample, and in the state where the adsorption pipe body is erected, the particulate adsorbents and the upper side thereof A space for diffusion is formed between the holding member and the introduction member, the introduction instrument has introduction pipes that are open at both ends, and one opening of the introduction pipe is An inlet for introducing a gas sample; Square opening is characterized in that the opening of the lower end of the suction tube body in the upright position is a connection port to be connected.

Moreover, it is preferable that the introduction port is a blowing port through which a subject blows exhalation, and the introduction tube has a liquid receiving part. Further, it is preferable that both or one of the pair of holding members is movable within the adsorption tube main body.

The gas component collection method of the present invention that solves the above problems is a gas component collection method using a gas component adsorption tube, and the gas component adsorption tube includes an adsorption tube main body for allowing a gas sample to pass therethrough, and the adsorption component. A pair of holding members that are disposed in the tube body and have air permeability, a holding space formed between the pair of holding members, and a large number that are arranged in the holding space and adsorb specific components in the gas sample. A particulate adsorbent, and in the state where the adsorbing tube main body is erected, there is a space for diffusion between a large number of the adsorbents and the holding member located above the adsorbent tube body. The adsorbing tube main body is held in an upright position in a state where the diffusion space is formed in the holding space of the gas component adsorbing tube, and an opening at the lower end of the adsorbing tube main body is provided. The gas sample is introduced from The gas sample after passing through a number of the particulate adsorbent and the diffusion space of the holding space, and wherein the discharging from the openings at the upper end of the suction tube body.

  In addition, after the gas sample is discharged from the opening at the upper end of the adsorption tube main body, one or both of the pair of holding members are pushed into the particulate adsorbent side to shrink the holding space and thereby the diffusion space. After that, it is preferable to supply an inert gas from one opening of the adsorption tube main body to the holding space to extract a specific component in the gas sample adsorbed on the particulate adsorbent. .

  In addition, after the gas sample is discharged from the opening at the upper end of the adsorption tube main body, the downstream side in the flow direction of the inert gas supplied until the inert gas is supplied to the holding space. It is preferable to provide a fine particle capturing member having air permeability on the further downstream side of the one holding member located at the position.

  In the present invention, a diffusion space is formed between a large number of the particulate adsorbents and the holding member located above the retention space in which the large number of the particulate adsorbents are arranged in a state where the adsorption pipe body is erected. It is provided to be. Therefore, in the present invention, when the gas sample is introduced from the lower opening of the adsorption tube main body to the upper opening with the adsorption tube main body standing, a large number of particulate adsorptions are caused by the flow of the gas sample. It is possible to reduce the ventilation resistance of the holding space by diffusing the agent into the diffusion space. Thereby, in this invention, after making a gas sample pass easily, the specific component in a gas sample can be made to adsorb | suck to many particulate adsorbents, and can be extract | collected.

(A), (b) is sectional drawing which shows the gas component adsorption | suction pipe | tube of embodiment of this invention. The holding member of a gas component adsorption pipe same as the above is shown, (a) is a perspective view, (b) is a side view. It is sectional drawing which shows the use condition of a gas component adsorption pipe same as the above, (a) shows the state before gas sample introduction, (b) shows the state at the time of gas sample introduction. It is a front view which shows the gaseous-component sampling apparatus provided with the gaseous-component adsorption pipe same as the above, (a) shows a decomposition | disassembly state, (b) shows an assembly state. It is sectional drawing which shows the gas component adsorption | suction pipe | tube of other embodiment of this invention.

  The present invention will be described based on embodiments shown in the accompanying drawings.

  The gas component adsorption tube 100 of the embodiment of the present invention is used for adsorption of a specific component contained in a gas sample A such as the atmosphere or exhaled air.

  As shown in FIG. 1, the gas component adsorption tube 100 includes an adsorption tube main body 1 for allowing a gas sample A to pass through, a pair of holding members 2 and 3 arranged in the adsorption tube main body 1, and a pair of holding members. A holding space S formed between the holding spaces S and a plurality of particulate adsorbents 4 arranged in the holding space S are provided. The pair of holding members 2 and 3 have air permeability. A number of particulate adsorbents 4 are adsorbents that adsorb specific components in the gas sample A. In the gas component adsorption tube 100, the diffusion space S <b> 1 is formed between the large number of particulate adsorbents 4 and the holding member 2 (3) located above the retention space S in a state where the adsorption tube body 1 is erected. (See FIG. 3A).

  The adsorption tube main body 1 is formed in a hollow cylindrical shape, and both ends are open. The opening 10 at one end and the opening 11 at the other end of the adsorption tube main body 1 are arranged on the same straight line along the axis of the adsorption tube main body 1. The adsorption tube main body 1 is made of, for example, glass, and has an outer diameter of 6 mm and an inner diameter of 4 mm. The adsorption tube main body 1 may be made of a material other than glass as long as the material does not affect the specific component contained in the gas sample A. Examples of other materials include metals such as heat-resistant stainless steel.

  The holding member 2 and the holding member 3 are the same. Hereinafter, the holding member 2 shown in FIG. 2 will be described in detail.

  The holding member 2 is for holding a large number of particulate adsorbents 4 in the adsorption tube main body 1 and has sufficient air permeability. The holding member 2 has many air holes 20 smaller than the particle size of the particulate adsorbent 4. Various members such as a porous member can be applied as the holding member 2, but in this embodiment, the holding member 2 is formed of a stainless steel wire mesh. The holding member 2 is preferably formed so as to have a mesh as large as possible within a range in which the particulate adsorbent 4 does not pass. The holding member 2 is, for example, a 150 mesh wire net.

  As shown in FIG. 2, the holding member 2 has a substantially truncated cone shape. The outer diameter of one bottom portion (lower bottom portion) is slightly larger than the inner diameter of the adsorption tube main body 1, and the other bottom portion (upper bottom). The outer diameter of the portion) is smaller than the inner diameter of the adsorption tube body 1. In the present embodiment, the holding member 2 includes an annular peripheral surface portion 21 and a circular upper bottom surface portion 23 that is continuous with the ring-shaped one end 22 of the peripheral surface portion 21 over the entire circumference. The holding member 2 is not provided with a lower bottom surface portion at the ring-shaped other end 24 of the peripheral surface portion 21. A large number of vent holes 20 are formed in each of the peripheral surface portion 21 and the upper bottom surface portion 23.

  In the holding member 2, the ring-shaped other end 24 of the peripheral surface portion 21 is a maximum diameter portion, and the other end 24 elastically contacts the inner peripheral surface of the adsorption pipe body 1 over the entire circumference. Here, the holding member 2 is in contact with the inner peripheral surface of the adsorption tube main body 1 at a pressure that does not shift due to the introduction pressure of the gas sample A introduced into the adsorption tube main body 1. By forming the holding member 2 in this way, the particulate adsorbent 4 is prevented from leaking from between the adsorption tube main body 1 and the holding member 2 disposed on the inside thereof, and then in the adsorption tube main body 1. The holding member 2 is movable. The holding member 2 is moved and operated in the adsorption tube main body 1 using a rod-shaped operation tool (not shown). As the operation tool, one having a locking structure that hooks around the hole (mesh) at the tip is used.

  Since the holding member 2 is provided in a substantially truncated cone shape as described above, the holding member 2 is unlikely to fall down when moving with the operation tool. Therefore, in the gas component adsorption tube 100 of the present embodiment, a gap through which the particulate adsorbent 4 leaks is formed between the inner peripheral surface of the adsorption tube main body 1 and the other end 24 of the holding member 2 disposed inside thereof. It is hard to be done.

  Further, in the present embodiment, the upper bottom surface portion 23 is provided substantially parallel to the opening surface at the other end 24 of the peripheral surface portion 21. Therefore, in this embodiment, when the upper bottom surface part 23 of the holding member 2 is pressed against a large number of particulate adsorbents 4 and moved, the holding member 2 is not easily tilted. The upper bottom surface portion 23 may be inclined with respect to the opening surface at the other end 24 of the peripheral surface portion 21.

  In the present embodiment, the holding member 2 is formed of a single wire mesh. Therefore, the holding member 2 has a low airflow resistance in a state where the holding member 2 is disposed in the adsorption tube main body 1. The holding member 2 is not limited to a single layer, and may be formed of a plurality of layers of wire mesh, but is preferably formed in a manner with low ventilation resistance.

  The holding member 2 described above and the holding member 3 which is the same member are arranged in the adsorption tube main body 1 and form a holding space S between the holding members 2 and 3. As shown in FIG. 3A, the holding space S is a diffusion space S1 between a large number of particulate adsorbents 4 and the holding member 3 positioned above the adsorbing tube main body 1 in an upright state. Is provided. By forming the diffusion space S <b> 1 in the holding space S in this way, a large number of particulate adsorbents 4 are movably arranged in the holding space S. Here, the state in which the adsorption tube main body 1 is erected includes not only a state in which the axial direction of the adsorption tube main body 1 is parallel to the vertical direction but also a non-horizontal state inclined with respect to the vertical direction.

  In the present embodiment, the holding members 2 and 3 are movably provided in the adsorption tube main body 1. Therefore, the holding members 2 and 3 have a position where the diffusion space S1 shown in FIG. 3A is formed and a position where a large number of particulate adsorbents 4 shown in FIG. It is free to move between.

  As shown in FIG. 3A, in a state where the diffusion space S1 is formed in the holding space S, the adsorption tube main body 1 is set in a standing posture, and the gas sample A is discharged from the lower opening 10 of the adsorption tube main body 1. When introduced, a large number of particulate adsorbents 4 diffuse into the diffusion space S1 due to the flow of the introduced gas sample A. Thereby, ventilation resistance by many particulate adsorbents 4 in holding space S can be reduced.

  A number of particulate adsorbents 4 arranged in the holding space S are adsorbents that adsorb specific components in the gas sample A in contact therewith. A large number of particulate adsorbents 4 are 20 mesh to 100 mesh powder or granular. Examples of the material of the particulate adsorbent 4 include resinous gas adsorbents such as Tenax TA (weakly polar porous polymer beads based on 2,6-Diphenyl-p-Phenylene Oxide), activated carbon, zeolite, and the like. Examples thereof include a porous gas adsorbent. The material of the particulate adsorbent 4 is appropriately selected depending on the specific component to be adsorbed.

  A large number of particulate adsorbents 4 are composed of particulate adsorbents 4 having various particle sizes. The large number of particulate adsorbents 4 may be composed of particulate adsorbents 4 having the same particle diameter. The holding member 2 is formed such that the vent hole 20 is smaller than the particulate adsorbent 4 having the smallest particle size among the many particulate adsorbents 4.

  Then, an example of the method of extract | collecting the specific component in the gas sample A using the gas component adsorption pipe 100 mentioned above is demonstrated.

  First, as shown in FIG. 3A, the adsorption tube main body 1 is held in a standing posture in a state where the diffusion space S1 is formed in the holding space S of the gas component adsorption tube 100. At this time, a large number of the particulate adsorbents 4 gather on the lower holding member 2 side of the holding space S, and the space between the large number of the particulate adsorbents 4 and the holding member 3 located on the upper side thereof, A diffusion space S1 for diffusing a large number of particulate adsorbents 4 is formed.

  Next, the gas sample A is introduced from the opening 10 at the lower end of the adsorption tube body 1. As a method for introducing the gas sample A, a method in which the subject holds the opening 10 and injects the gas sample A made of exhaled air, or a gas storage bag (not shown) storing the gas sample A in the opening 10 is used. The method of connecting and extruding the gas sample A in a gas storage bag is mentioned. As another method for introducing the gas sample A, a gas storage bag containing the gas sample A is connected to the opening 10, and a suction pump (not shown) is connected to the opening 11 at the upper end of the adsorption tube body 1. Connect and suck the gas sample A in the gas storage bag by this suction pump, or suck the suction tube body 1 at the opening 11 at the upper end of the suction tube body 1 with the opening 10 at the lower end of the suction tube body 1 directed to the inspection location. For example, a method may be used in which a pump is connected and the gas sample A composed of air (atmosphere) at the inspection location is sucked by the suction pump.

  Next, the gas sample A introduced from the opening 10 is allowed to pass through the large number of particulate adsorbents 4 and the diffusion space S1 in the holding space S, and then discharged from the opening 11 at the upper end of the adsorption tube body 1. . At this time, a large number of particulate adsorbents 4 gathered on the holding member 2 side are blown up by the flow of the gas sample A introduced from the opening 10 as shown in FIG. To spread. Thereby, the clearance gap between many particulate adsorbents 4 spreads, and ventilation resistance reduces.

  As described above, in the gas component adsorption tube 100 of the present embodiment, when the gas sample A is introduced, the ventilation resistance due to a large number of particulate adsorbents 4 can be reduced. Therefore, the gas sample A can be passed through the adsorption tube main body 1 by using blowing by exhalation, suction by a pump having a small suction force, or the like without using a pump having a large suction force. The pump having a small suction force referred to here is, for example, a diaphragm type air pump for tropical fish.

  Further, in the gas component adsorption tube 100 of the present embodiment, the ventilation resistance of the holding members 2 and 3 itself is increased by increasing as much as possible within a range where the particulate adsorbent 4 does not pass through the ventilation holes 20 of the holding members 2 and 3. Can be low.

  FIG. 4 shows a gas component collection device 200 provided with the gas component adsorption tube 100 of the present embodiment.

  The gas component collection device 200 includes a gas component adsorption tube 100 and an introduction device 5 for introducing the gas sample A into the gas component adsorption tube 100. The introduction device 5 has a non-linear introduction tube 6 opened at both ends. One opening of the introduction tube 6 is an introduction port 60 through which the gas sample A is introduced, and the other opening of the introduction tube 6 is connected to the opening 10 at the lower end of the adsorption tube main body 1 in a standing posture. This is the connection port 61. The introduction pipe 6 has a liquid receiving part 62.

  Specifically, the introduction tube 6 is made of glass, for example. The introduction tube 6 may be made of a material other than glass as long as the material does not affect the specific component contained in the gas sample A. Another material is, for example, Teflon (registered trademark).

  As shown in FIG. 4A, the introduction pipe 6 includes a horizontal pipe portion 63 that extends in a straight line in the horizontal direction, a vertical pipe portion 64 that extends in a straight line in the vertical direction (vertical direction), and a hollow spherical shape. A liquid receiver 62. One end of the horizontal tube portion 63 is an introduction port 60, and the other end is connected to and communicated with an intermediate portion in the vertical direction of the vertical tube portion 64. The vertical pipe portion 64 has a connection port 61 at the upper end and is connected to the liquid reception portion 62 at the lower end. In the present embodiment, the introduction port 60 opens sideways, and the connection port 61 opens upward.

  A ring-shaped connector 7 is attached to the connection port 61. The connection tool 7 is a rubber tube, for example. The opening 10 at the lower end of the adsorption tube main body 1 is connected to the connection port 61 by the connector 7. The introduction device 5 and the gas component adsorption tube 100 may be connectable without using the connection tool 7 so that the opening 10 and the connection port 61 are connected by fitting.

  Then, an example of the use procedure of the gas component collection device 200 mentioned above is demonstrated.

  First, the connection tool 7 is attached to the connection port 61 of the introduction tool 5, and the opening 10 at the lower end of the adsorption tube body 1 of the gas component adsorption tube 100 is connected to the connection port 61 using the connection tool 7. Here, as shown in FIG. 4A, the gas component adsorption tube 100 is connected to the connection port 61 in a standing posture in a state where the diffusion space S <b> 1 is formed in the holding space S. At this time, a large number of particulate adsorbents 4 gather on the lower holding member 2 side in the holding space S, and the space between the large number of particulate adsorbents 4 and the holding member 3 positioned on the upper side is for diffusion. It becomes space S1.

  Next, the gas sample A is introduced into the introduction pipe 6 from the introduction port 60 of the introduction device 5. As an introduction method here, a method in which a subject directly holds the introduction port 60 and blows in a gas sample A composed of exhalation, or a gas storage bag (not shown) containing the gas sample A is connected to the introduction port 60. And the method etc. which extrude the gas sample A in a gas storage bag in the inlet tube 6 are mentioned. In addition, as a method of introducing the gas sample A, a gas storage bag containing the gas sample A is connected to the introduction port 60, and a suction pump (not shown) is connected to the opening 11 at the upper end of the adsorption tube body 1. Connect and suck the gas sample A in the gas storage bag by this suction pump, or connect the suction pump to the opening 11 at the upper end of the adsorption tube body 1 with the inlet 60 directed to the inspection location, and this suction For example, a method of sucking the gas sample A composed of air (atmosphere) at the inspection location by a pump may be used.

  When the gas sample A is introduced into the introduction pipe 6, the liquid moisture introduced together with the gas sample A can be received by the liquid receiving portion 62, whereby the liquid moisture returns to the introduction port 60 or the gas component. Reaching the adsorption tube 100 can be suppressed. This effect is particularly useful when the subject directly injects the gas sample A composed of exhaled gas directly holding the inlet 60. At this time, the introduction port 60 is a blowing port through which the subject blows exhalation. As a useful reason, when inhaling exhalation, saliva is easily introduced together with exhalation. When the gas sample A in the gas storage bag is introduced from the inlet 60, the introduction device 5 does not include the liquid receiving portion 62 when there is little concern about mixing of liquid components from the inlet 60. It may be.

  The gas sample A introduced from the introduction port 60 passes through the horizontal tube portion 63 and the vertical tube portion 64 and reaches the opening 10 of the gas component adsorption tube 100. At this time, the water vapor in the introduced gas sample A is condensed on the inner wall of the introduction pipe 6 (the horizontal pipe part 63 and the vertical pipe part 64), thereby suppressing the water vapor from reaching the gas component adsorption pipe 100 to some extent. it can.

  Next, the gas sample A introduced from the opening 10 passes through the large number of particulate adsorbents 4 and the diffusion space S1 in the holding space S, and then is discharged from the opening 11 at the upper end of the adsorption tube main body 1. . At this time, a large number of particulate adsorbents 4 gathered on the holding member 2 side are blown up by the flow of the gas sample A introduced from the opening 10 and spread into the diffusion space S1 (see FIG. 3B). . Thereby, the clearance gap between many particulate adsorbents 4 spreads, and the ventilation resistance of the holding space S reduces.

  In the gas component collection device 200 of the present embodiment used as described above, the gas component adsorption pipe 100 in a state in which the diffusion space S1 is formed in the holding space S is connected to the introduction device 5 to thereby adsorb the gas component. The tube 100 can be in an upright posture suitable for adsorption. And when the gas sample A is introduce | transduced, the ventilation resistance by many particulate adsorbents 4 can be reduced. Therefore, the gas sample A can be passed through the adsorption tube main body 1 by blowing with exhalation or introduction from a pressed gas storage bag without using a pump with a large suction force. Further, in the gas component collecting apparatus 200 of the present embodiment, the influence of humidity and droplets can be suppressed to a minimum by using the introduction device 5 even in a gas sample including high humidity gas and fine droplets. it can.

  Moreover, in the gas component collection device 200 of the present embodiment, after the gas sample A is passed through the gas component adsorption tube 100, the introduction device 5 can be removed from the gas component adsorption tube 100. Liquid water (saliva etc.) accumulated in the part 62 can be discarded.

  The gas component adsorption tube 100 of the present embodiment described above extracts and analyzes the specific component adsorbed by the particulate adsorbent 4 as follows, for example.

  First, using a rod-shaped operation tool, both or one of the pair of holding members 2 and 3 in the adsorption tube main body 1 of the gas component adsorption tube 100 is pushed and moved in the approaching direction (particulate adsorbent 4 side). The holding space S is shrunk to eliminate the diffusion space S1, and a large number of particulate adsorbents 4 are packed in the holding space S. Thus, by making the holding space S into a state in which a large number of particulate adsorbents 4 are packed finely, the particulate adsorbent 4 does not exist in the holding space S even when the adsorption pipe body 1 is turned sideways. It is possible to prevent formation of a ventilation space having a low density of the particulate adsorbent 4.

  Next, a cylinder (not shown) is connected to one opening 10 (11) of the adsorption tube main body 1 through a pipe. This cylinder is a gas cylinder that supplies an inert gas (such as He gas) at a constant pressure. And the other opening part 11 (10) of the adsorption pipe main body 1 is connected to analyzers, such as a gas chromatograph. And the adsorption pipe main body 1 is heated by the heater 8 (refer FIG. 5), and the inert gas supplied from a cylinder is allowed to pass through the adsorption pipe main body 1 in this state. As a result, the specific component adsorbed on the particulate adsorbent 4 is thermally desorbed, and the desorbed specific component reaches the analyzer and can be analyzed.

  Here, since the holding space S is in a state where the particulate adsorbent 4 is densely packed, the inert gas easily flows into the entire gaps between the large number of particulate adsorbents 4 so that a specific component can be extracted ( Extraction) can be performed efficiently.

  In addition, after the gas sample A is discharged from the opening 11 at the upper end of the adsorption tube main body 1 until the inert gas is supplied to the holding space S, the downstream side in the flow direction of the supplied inert gas. It is preferable to provide a fine particle capturing member 9 having air permeability further downstream of the holding member 2 positioned.

  FIG. 5 shows a gas component adsorption tube 100 according to another embodiment of the present invention in which the fine particle capturing member 9 is arranged. The fine particle capturing member 9 is for capturing fine particles. The fine particles are the friction between the particulate adsorbents 4 when the one or both of the pair of holding members 2 and 3 are pushed into the particulate adsorbent 4 side in the adsorption tube main body 1, and the particulate adsorbent 4. And fine particles generated by the friction between the holding member 2 (3). The fine particles are smaller than the mesh of the holding member 2.

  The fine particle capturing member 9 is formed of a member having a larger ventilation resistance than the holding member 2. The fine particle capturing member 9 is, for example, glass wool. In the present embodiment, the particle capturing member 9 is provided in a place adjacent to the holding member 2. The fine particle capturing member 9 is inserted into the adsorption tube main body 1 through the opening 10 and is pressed against the holding member 2 using an operation tool or the like for moving the holding member 2. The fine particle capturing member 9 may be disposed at a position away from the holding member 2. The particulate capturing member 9 is attached to the adsorption tube body 1 immediately after moving one or both of the pair of holding members 2 and 3 in the adsorption tube body 1, for example. The fine particle capturing member 9 may be attached to the adsorption tube body 1 so as to cover the opening 10 on the downstream side of the adsorption tube body 1 from the outside.

  Here, by providing the fine particle capturing member 9 having a larger ventilation resistance than the holding member 2 in the adsorption pipe body 1, the ventilation resistance in the adsorption pipe body 1 is increased. However, since the carrier gas (inert gas) can be flowed from the cylinder at a high pressure, the particle capturing member 9 does not get in the way during the analysis.

  By providing the particle capturing member 9 in the adsorption tube main body 1 as described above, it is possible to suppress the entry of fine particles into the analytical instrument when a carrier gas (inert gas) flows through the adsorption tube main body 1. Can do.

Note that the above-described gas component adsorption tube 100 can be reused. In that case, the gas component adsorption tube 100 is removed from the analyzer, accommodated in a thermostat, and N ₂ gas is supplied from the cylinder into the adsorption tube body 1 while maintaining a constant temperature. Here, when the fine particle capturing member 9 is disposed in the adsorption tube main body 1, the above-described reuse processing is performed after removing the fine particle capturing member 9. By doing in this way, the residual component in the thermally adsorbed particulate adsorbent 4 can be discharged to the outside of the adsorption tube main body 1, and the gas component adsorption tube 100 can be washed. Thereby, the gas component adsorption pipe 100 can be reused.

  Further, the gas component adsorption tube 100 described above can also extract and analyze the specific component adsorbed on the particulate adsorbent 4 as follows, for example. That is, the adsorption pipe body 1 is held in an upright position with the diffusion space S1 formed in the holding space S, and a cylinder (not shown) is connected to one of the openings 10 and 11 via a pipe. Then, an analytical instrument is connected to the other opening 10 (11), and the specific component is extracted by the same method as described above. By doing in this way, even if the introduction pressure of the inert gas supplied from a cylinder is weak, a specific component can be taken out. Also in this case, it is preferable to provide the fine particle capturing member 9 in the adsorption tube main body 1.

  In the gas component adsorption tube 100 of the embodiment of the present invention, the introduction device 5 is directly or directly inserted into the gas component adsorption tube 100 without using a gas storage bag when analyzing a specific component in the gas sample A (exhaled air or atmosphere (atmosphere)). Gas sample A can be introduced via As a result, the gas component flows out into the gas sample A from the gas storage bag itself, or the specific component in the gas sample A adheres to the gas storage bag, and the gas is stored in the analysis of the specific component in the gas sample A. The influence of the bag can be avoided. Thus, the specific component in the gas sample A can be analyzed more accurately by not using the gas storage bag.

  Further, in the gas component adsorption pipe 100 of the present embodiment described above, the holding members 2 and 3 are movable in the adsorption pipe main body 1, but the holding members 2 and 3 are diffused in the holding space S. You may fix in the adsorption pipe main body 1 in the position where S1 is formed. For example, a stopper made of an annular dent may be provided on the inner peripheral surface of the adsorption tube main body 1 so that the holding members 2 and 3 are fixed in position. In this case, when analyzing a specific component, the adsorption pipe main body 1 is held in an upright posture in a state where the diffusion space S1 is formed in the holding space S, and piping is provided in one of the openings 10 and 11. A cylinder (not shown) may be connected to the other, and an analytical instrument may be connected to the other opening 10 (11) to take out the specific component adsorbed from the particulate adsorbent 4.

  Although the present invention has been described based on the embodiments shown in the accompanying drawings, the present invention is not limited to the above-described embodiments, and appropriate design changes can be made within the intended scope of the present invention. It is.

DESCRIPTION OF SYMBOLS 1 Adsorption pipe | tube main body 2 Holding member 3 Holding member 4 Particulate adsorbent 5 Introducing tool 6 Introducing pipe 9 Fine particle capture member 10 Opening part 11 Opening part 60 Introducing port 61 Connecting port 62 Liquid receiving part 100 Gas component adsorption pipe 200 Device A Gas sample S Holding space S1 Diffusion space

Claims (9)

An adsorption tube body for passing a gas sample;
A pair of holding members disposed in the adsorption pipe body and having air permeability;
A holding space formed between the pair of holding members;
A plurality of particulate adsorbents arranged in the holding space and adsorbing specific components in the gas sample,
It said holding space, in a state in which the were erected suction tube body, provided as diffusion space is formed between the upper side of the holding member located on the upper side and the number of grain child sorbent ,
The plurality of particulate adsorbents gathers on the lower holding member side of the holding space in the state where the adsorption tube main body is erected, and the lower opening of the adsorption pipe main body in the erected state. A gas component adsorption tube that expands into the diffusion space when the gas sample is introduced from . Both or either of a pair of said retaining member, said is movable in suction tube body, the gas component adsorbed tube according to claim 1. The holding member is a wire mesh, the gas component adsorbed tube according to claim 1 or claim 2. Comprising a gas carrying component suction tube, and a introducer for introducing a gas body sample in this gas component suction pipes,
The gas component adsorption tube includes an adsorption tube main body for allowing the gas sample to pass therethrough, a pair of holding members disposed in the adsorption tube main body and having air permeability, and a holding formed between the pair of holding members. And a large number of particulate adsorbents that are arranged in the holding space and adsorb specific components in the gas sample, and in the state in which the adsorption pipe body is erected, A diffusion space is provided between the particulate adsorbent and the holding member located above the particulate adsorbent,
The introduction device has introduction pipes open at both ends,
One opening of the introduction tube is an introduction port into which the gas sample is introduced,
The other opening of the introduction pipe is a gas component collection device , which is a connection port to which an opening at the lower end of the adsorption pipe main body in a standing posture is connected. The introduction port is a blowing port through which the subject blows exhalation,
The inlet tube has a liquid receiving section, a gas component collection apparatus according to claim 4. 6. The gas component collecting device according to claim 4, wherein both or one of the pair of holding members is movable within the adsorption tube main body . A gas component collecting method using a gas component adsorption tube,
The gas component adsorption tube includes an adsorption tube main body for allowing a gas sample to pass through, a pair of holding members disposed in the adsorption tube main body and having air permeability, and a holding space formed between the pair of holding members. And a large number of particulate adsorbents that are arranged in the holding space and adsorb specific components in the gas sample, and in the state where the holding tube body is erected, It is provided so that a space for diffusion is formed between the particulate adsorbent and the holding member located on the upper side,
Holding the adsorption pipe body in an upright posture in a state where the diffusion space is formed in the holding space of the gas component adsorption pipe;
After the gas sample is introduced from the opening at the lower end of the adsorption tube main body and the gas sample is passed through the particulate adsorbent and the diffusion space in the holding space, the upper end of the adsorption tube main body It is discharged from the opening of the gas-body component collection method. After discharging the gas sample from the opening at the upper end of the adsorption tube body,
One or both of the pair of holding members are pushed into the particulate adsorbent side to shrink the holding space and eliminate the diffusion space,
Thereafter, an inert gas is supplied from one opening of the adsorption tube main body to the holding space to extract a specific component in the gas sample adsorbed on the particulate adsorbent. Gas component collection method. Positioned on the downstream side in the flow direction of the supplied inert gas after the gas sample is discharged from the opening at the upper end of the adsorption tube main body until the inert gas is supplied to the holding space. The gas component collecting method according to claim 8, wherein a fine particle capturing member having air permeability is provided further downstream of the one holding member.

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