CN103335924A - Atmospheric heavy-metal on-line analyzer - Google Patents
Atmospheric heavy-metal on-line analyzer Download PDFInfo
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- CN103335924A CN103335924A CN2012105281873A CN201210528187A CN103335924A CN 103335924 A CN103335924 A CN 103335924A CN 2012105281873 A CN2012105281873 A CN 2012105281873A CN 201210528187 A CN201210528187 A CN 201210528187A CN 103335924 A CN103335924 A CN 103335924A
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- 229910001385 heavy metal Inorganic materials 0.000 claims description 54
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- 239000000126 substance Substances 0.000 description 4
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention discloses an atmospheric heavy-metal on-line analyzer. The analyzer comprises a casing, a particle separating section, a particle collecting section, a sample transmitting section, an XRF detecting section and a processor, wherein the particle separating section is fixed to the casing and partially passes through the casing, and the particle separating section is used for separating particles in air; the particle collecting section is disposed in the casing and communicates with the particle separating section, and the particle collecting section is used for enriching sample carriers with the particles in a constant-flow work environment; the sample transmitting section is disposed in the casing and used for transmitting the sample carriers; the XRF detecting section is disposed in the casing and used for detecting the sample carriers transmitted by the sample transmitting section to the XRF detecting section; and the processor outputs analysis data according to detection results of the XRF detecting section. According to the invention, the atmospheric heavy-metal on-line analyzer is advantageous in that the analyzer overcomes a disadvantage that detection and measurement are divided into two steps in the prior art; the analyzer can complete atmospheric particle automatic monitoring tasks in fixed sites or unattended field sites; continuous, on-line, automatic monitoring is achieved; and samples needs no pretreatment.
Description
Technical field
The present invention relates to surrounding air automated monitor technical field, particularly relate to the atmosphere heavy metal in-line analyzer of heavy metal in a kind of particle of can on-line continuous gathering in the atmospheric environment and Accurate Analysis particle heavy metal concentration.
Background technology
Heavy metal pollution in the atmosphere has natural source and artificial the source two kinds, by various geologic function on universe celestial body effect and the earth some heavy metal element is entered and belong to natural source in the atmosphere, the heavy metal in artificial source is mainly the harmful gas that contains heavy metal in a large number that commercial production, motor vehicle exhaust emission and auto tire wear produce and dust etc., they mainly be distributed in industrial and mineral around and the both sides of highway, railway.Ratio difference between two kinds of sources of various elements.According to statistics, the whole world is entered in the heavy metal of atmosphere by natural source, and lead only accounts for it to the total burst size about 3.5% of atmosphere, and the shared ratio of cadmium is also very low, have only 15% of total burst size, and the ratio of chromium, copper is higher, is about 59% and 44% respectively.The quantity of the heavy metal lead that human activity is discharged into the atmosphere, cadmium, nickel, cobalt, copper is much larger than their natural input quantity.As: the cadmium in artificial source is 3100～12040t/a, and zinc is 70250～193500t/a, and lead is 288700～376000t/a, and copper is 19860～50870t/a.In the approach of multiple complexity, with the burning of fossil fuel and the release outbalance in the metal smelt process.Heavy metal in the atmosphere can be absorbed by animal by various approach such as respiratory tract, alimentary canal and skins.When these heavy metals run up to a certain degree in animal body, namely can directly influence the growing of animal, Physiology and biochemistry function, until the death that causes animal, simultaneously heavy metal also can be absorbed by the body by digestive system along food chain, very harmful to the crowd.
Atmosphere heavy metal is present in the atmosphere with the form of suspended particulate substance, and the kinetic diameter of particle is from 0.1um to 100um.Usually the above suspended particulate substance of 10um is easy to remove, and under the process several hrs can deposit in atmosphere, transmits not far.And below the 10um, especially the following suspended particulate substance of 2.5um is not easy to remove, and can floating several days even several months in atmosphere, can transmit hundreds of in addition go up a thousand li, harm is maximum.
At present, known atmosphere heavy metal detects is to adopt the collection of Atmospheric particulates heavy metal and measure the way that two steps are separated, no matter this method is sampling or the chemico-analytic workload in laboratory is big, automaticity is low, be not suitable for detecting at a distance, if and need when getting annual average continuous sampling more than 12 hours, can not reflect heavy metal situation of change continuous time, can not carry out real-time reflection to boisterous variations such as sandstorms; The lab analysis method needs a large amount of collected specimens, and sample is destroyed behind chemical analysis to be fallen, and can't carry out follow-up study, limited by the institute's heavy metal of monitoring (or metalloid) element kind, the analysis that collected specimens can only one or several element.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or provides a kind of useful commerce to select at least.For this reason, one object of the present invention is to propose a kind of for the accurate measurement of heavy metal in atmospheric environment TSP or the particles such as PM10 or PM2.5 and particle heavy metal automatic monitor simple in structure, easy to use, stable performance.
A kind of atmosphere heavy metal in-line analyzer according to the embodiment of the invention comprises: casing; Particulate separation portion, described particulate separation portion are fixed on the described casing and part runs through described casing with particle in the separation of air; Particle collection portion, described particle collection portion are located in the described casing and are connected with described particle separation portion, with the described particle of enrichment in the constant rate working environment on sampling carrier; The sampling transport part, described sampling transport part is located in the described casing to transmit described sampling carrier; XRF test section, described XRF test section are located in the described casing to detect the sampling carrier that is transferred to described XRF test section by described sampling transport part, and processor, and described processor is analyzed data according to the testing result output of described XRF test section.
Thus, having overcome in the prior art needs according to the atmosphere heavy metal in-line analyzer of the embodiment of the invention will detect and measure and be divided into the shortcoming that two steps are carried out, can finish fixed station or open-air unattended Atmospheric particulates are monitored task automatically, realize continuous, online, monitoring and sample need not pre-service automatically.Atmosphere heavy metal in-line analyzer of the present invention is simple in structure, the cycle of operation long, easy to maintenance, monitoring and analyze data quick and precisely, and meets U.S. EPA IO-3.3 standard.
In addition, atmosphere heavy metal in-line analyzer according to the above embodiment of the present invention can also have following additional technical characterictic:
According to one embodiment of present invention, described particulate separation portion comprises and adopts cutter, upper binding head, prolongation pipe, the lower fixed seat that the direct insertion hard link mode of hanging down links to each other and the connecting pipe that runs through described casing from top to bottom successively, and is equipped with two O RunddichtringOs in described cutter, upper binding head, prolongation pipe, lower fixed seat and the connecting pipe.
According to one embodiment of present invention, described cutter comprises TSP, PM2.5 and PM10 cutter.
According to one embodiment of present invention, described particulate separation portion also comprises by heating tape and is wrapped in the heating module that prolongs on the pipe.
According to one embodiment of present invention, described particle collection portion comprises: the roof pressure motor, and described roof pressure motor is pressed in described connecting pipe lower port place with described sampling carrier sealing top; Temperature sensor, described temperature sensor detect the temperature in the described particle collection portion; Pressure transducer, described pressure transducer detect the pressure in the described particle collection portion; Air pump, described air pump is pumped into described particle in the described particle collection portion from described particulate separation portion; And controller, described controller is controlled described air pump to form the constant rate working environment according to the testing result of described temperature sensor and described pressure transducer.
According to one embodiment of present invention, described roof pressure motor is by the move up upper end of described roof pressure motor of stepper motor, and described roof pressure motor the end face of upper end be provided with the O RunddichtringO that in the roof pressure process, between described connecting pipe and described roof pressure motor, forms sealing.
According to one embodiment of present invention, described sampling transport part comprises: driven rotating disk is wound with described sampling carrier on the described driven rotating disk; The active rotating disk; Described active rotating disk is by the described sampling carrier motion of rotating drive; With a plurality of runners, described a plurality of runners and described sampling carrier contact to limit the position of described sampling carrier.
According to one embodiment of present invention, the sampling transport part also comprises scrambler, and described scrambler rotates by the drive of described sampling carrier, produces step-by-step counting to control the move distance of described sampling carrier.
According to one embodiment of present invention, described XRF test section comprises that order forms high pressure light pipe, optical filter box, collimating apparatus and the detector of light path, and described detector and described high-voltage tube are positioned at sampling carrier one side.
According to one embodiment of present invention, described optical filter box comprises that many group optical filters and described many group optical filters automatically switch and filters.
According to one embodiment of present invention, described XRF test section also comprises self-checking device, and described self-checking device has corrector strip that multiple first biscuit firing forms to calibrate the testing result of described XRF test section.
According to one embodiment of present invention, described sampling carrier is teflon filter paper.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the perspective view according to the atmosphere heavy metal in-line analyzer of the embodiment of the invention;
Fig. 2 is the front elevation according to the atmosphere heavy metal in-line analyzer of the embodiment of the invention;
Fig. 3 is the vertical view according to the atmosphere heavy metal in-line analyzer of the embodiment of the invention;
Fig. 4 is the structural representation according to the particulate separation portion of the atmosphere heavy metal in-line analyzer of the embodiment of the invention;
Fig. 5 is the structural representation according to the particle collection portion of the atmosphere heavy metal in-line analyzer of the embodiment of the invention;
Fig. 6 is the structural representation according to the sampling transport part of the atmosphere heavy metal in-line analyzer of the embodiment of the invention; With
Fig. 7 is the structural representation according to the XRF test section of the atmosphere heavy metal in-line analyzer of the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center "; " vertically "; " laterally "; " length "; " width "; " thickness ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", close the orientation of indications such as " counterclockwise " or position is based on orientation shown in the drawings or position relation, only be that the present invention for convenience of description and simplification are described, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless clear and definite concrete restriction is arranged in addition.
In the present invention, unless clear and definite regulation and restriction are arranged in addition, broad understanding should be done in terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand above-mentioned term concrete implication in the present invention as the case may be.
In the present invention, unless clear and definite regulation and restriction are arranged in addition, first feature second feature it " on " or D score can comprise that first and second features directly contact, can comprise that also first and second features are not directly contacts but by the contact of the additional features between them.And, first feature second feature " on ", " top " and " above " comprise first feature directly over second feature and oblique upper, or only represent that the first characteristic level height is higher than second feature.First feature second feature " under ", " below " and " below " comprise first feature directly over second feature and oblique upper, or only represent that the first characteristic level height is less than second feature.
Below with reference to Fig. 1-7 atmosphere heavy metal in-line analyzer according to the embodiment of the invention is described.
According to the atmosphere heavy metal in-line analyzer of the embodiment of the invention, comprise particulate separation portion 10, particle collection portion 20, sampling transport part 30, XRF test section 40, casing 50 and processor (not shown).
Particularly, as Figure 1-3, particulate separation portion 10 is fixed on the casing 50 and part runs through casing 50 with particle in the air in the absorption atmosphere and the separation of air.
Processor can be computer, analyzes data according to testing result output heavy metal particles, for example heavy metal particles concentration etc.
Thus, having overcome in the prior art needs according to the atmosphere heavy metal in-line analyzer of the embodiment of the invention will detect and measure and be divided into the shortcoming that two steps are carried out, can finish fixed station or open-air unattended Atmospheric particulates are monitored task automatically, realize continuous, online, monitoring and sample need not pre-service automatically.Atmosphere heavy metal in-line analyzer of the present invention is simple in structure, the cycle of operation long, easy to maintenance, monitoring and analyze data quick and precisely, and meets U.S. EPA IO-3.3 standard.
According to one embodiment of present invention, as shown in Figure 4, particulate separation portion 10 comprises cutter 11, upper binding head 12, prolongation pipe 13, the lower fixed seat 14 that adopts the direct insertion hard link mode of hanging down to link to each other successively and the connecting pipe 15 that runs through casing 50 from top to bottom.For the impermeability that guarantees to connect between the above-mentioned parts, be equipped with two O RunddichtringOs in cutter 11, upper binding head 12, prolongation pipe 13, lower fixed seat 14 and the connecting pipe 15.
Air in the atmosphere enters in the casing 50 by particulate separation portion 10, and when air process cutter 11, the particle that has in certain kinetic diameter scope is separated from air.Cutter 11 can comprise and cutter at the different dynamic diameter for example can comprise TSP, PM2.5 and PM10 cutter according to detecting needs.Can respectively the particle with TSP, PM10 and PM2.5 kinetic diameter be isolated from air by TSP, PM2.5 and PM10 cutter.
Isolated particle continues to flow to particle collection portion 20 along upper binding head 12, prolongation pipe 13, lower fixed seat 14 and connecting pipe 15.
Thus, according to particulate separation of the present invention portion 10, the particle of (TSP, PM10 and PM2.5) in certain kinetic diameter scope can be separated from air automatically, for example various heavy such as airborne lead, iron, cadmium, chromium, arsenic are convenient in the subsequent step above-mentioned heavy metal particles be detected and analyzes.
As shown in Figure 5, particle collection portion 20 comprises: roof pressure motor 21, temperature sensor 22, pressure transducer 23, controller 24 and air pump 25.
As shown in Figure 6, the coil paper transmitting device can be adopted in sampling transport part 30, and comprises: driven rotating disk 31, active rotating disk 32, a plurality of runner 33 and scrambler 34.
Be wound with sampling carrier 60 on the driven rotating disk 31, initiatively rotating disk moves by the rotating drive sampling carrier 60 of self, and then drives driven rotating disk 31 rotations.A plurality of runners 33 arrange respectively and contact to limit the position of sampling carrier 60 with sampling carrier 60, and then guarantee that sampling carrier 60 can drive the rotation of clutch plate 31.
Scrambler 34 is sampled carrier 60 by the friction force with sampling carrier 60 and drives, rotation by scrambler 34 produces step-by-step counting in order to control the move distance of sampling carrier 60 accurately, thereby has guaranteed that sampling carrier 60 can transfer to the XRF test section accurately.
As shown in Figure 7, XRF test section 40 comprises high pressure light pipe 41, optical filter box 42, collimating apparatus 43, detector 44 and the self-checking device 45 of forming light path in proper order.Detector 44 is positioned at sampling carrier 60 1 sides with high pressure light pipe 41.
Optical filter box 42 comprises many group optical filters and organizes optical filter more and respectively the light path of XRF test section 40 is filtered by automatic switchover.The optical filter box 42 of high pressure light pipe 41 by automaticallying switch, and excite aerosol sample on the sampling carrier 60 by collimating apparatus 43, receive signals and be transferred to processor by detector 44 and carry out Treatment Analysis, export data at last.Processor can adopt and the computer of XRF test section 40 by wireless or wired connection.Thus, XRF test section 40 detects the X fluorescence that the heavy metal particles thing produces under excitation of X-rays.Sample need not pre-service.
Other formations of the atmosphere heavy metal in-line analyzer of the embodiment of the invention can be well known by persons skilled in the art, do not repeat them here.
In the description of this instructions, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment under the situation that does not break away from principle of the present invention and aim within the scope of the invention, modification, replacement and modification.
Claims (12)
1. an atmosphere heavy metal in-line analyzer is characterized in that, comprising:
Casing;
Particulate separation portion, described particulate separation portion are fixed on the described casing and part runs through described casing with particle in the separation of air;
Particle collection portion, described particle collection portion are located in the described casing and are connected with described particle separation portion, with the described particle of enrichment in the constant rate working environment on sampling carrier;
The sampling transport part, described sampling transport part is located in the described casing to transmit described sampling carrier;
XRF test section, described XRF test section are located in the described casing to detect the sampling carrier that is transferred to described XRF test section by described sampling transport part, and
Processor, described processor is analyzed data according to the testing result output of described XRF test section.
2. atmosphere heavy metal in-line analyzer according to claim 1, it is characterized in that, described particulate separation portion comprises and adopts cutter, upper binding head, prolongation pipe, the lower fixed seat that the direct insertion hard link mode of hanging down links to each other and the connecting pipe that runs through described casing from top to bottom successively, and is equipped with two O RunddichtringOs in described cutter, upper binding head, prolongation pipe, lower fixed seat and the connecting pipe.
3. atmosphere heavy metal in-line analyzer according to claim 2 is characterized in that, described cutter comprises TSP, PM2.5 and PM10 cutter.
4. atmosphere heavy metal in-line analyzer according to claim 2 is characterized in that, described particulate separation portion also comprises by heating tape and is wrapped in the heating module that prolongs on the pipe.
5. atmosphere heavy metal in-line analyzer according to claim 2 is characterized in that, described particle collection portion comprises:
The roof pressure motor, described roof pressure motor is pressed in described connecting pipe lower port place with described sampling carrier sealing top;
Temperature sensor, described temperature sensor detect the temperature in the described particle collection portion;
Pressure transducer, described pressure transducer detect the pressure in the described particle collection portion;
Air pump, described air pump is pumped into described particle in the described particle collection portion from described particulate separation portion; With
Controller, described controller is controlled described air pump to form the constant rate working environment according to the testing result of described temperature sensor and described pressure transducer.
6. atmosphere heavy metal in-line analyzer according to claim 5, it is characterized in that, described roof pressure motor is by the move up upper end of described roof pressure motor of stepper motor, and described roof pressure motor the end face of upper end be provided with the O RunddichtringO that in the roof pressure process, between described connecting pipe and described roof pressure motor, forms sealing.
7. atmosphere heavy metal in-line analyzer according to claim 1 is characterized in that, described sampling transport part comprises:
Driven rotating disk is wound with described sampling carrier on the described driven rotating disk;
The active rotating disk; Described active rotating disk is by the described sampling carrier motion of rotating drive; With
A plurality of runners, described a plurality of runners and described sampling carrier contact to limit the position of described sampling carrier.
8. atmosphere heavy metal in-line analyzer according to claim 7 is characterized in that, the sampling transport part also comprises scrambler, and described scrambler rotates by the drive of described sampling carrier, produces step-by-step counting to control the move distance of described sampling carrier.
9. atmosphere heavy metal in-line analyzer according to claim 1, it is characterized in that, described XRF test section comprises that order forms high pressure light pipe, optical filter box, collimating apparatus and the detector of light path, and described detector and described high-voltage tube are positioned at sampling carrier one side.
10. atmosphere heavy metal in-line analyzer according to claim 9 is characterized in that, described optical filter box comprises that many group optical filters and the automatic switchover of described many group optical filters filter.
11. atmosphere heavy metal in-line analyzer according to claim 9, it is characterized in that, described XRF test section also comprises self-checking device, and described self-checking device has corrector strip that multiple first biscuit firing forms to calibrate the testing result of described XRF test section.
12. according to each described atmosphere heavy metal in-line analyzer among the claim 1-11, it is characterized in that described sampling carrier is teflon filter paper.
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| CN2012105281873A CN103335924A (en) | 2012-12-10 | 2012-12-10 | Atmospheric heavy-metal on-line analyzer |
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| CN2012105281873A CN103335924A (en) | 2012-12-10 | 2012-12-10 | Atmospheric heavy-metal on-line analyzer |
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| CN103822934A (en) * | 2014-02-19 | 2014-05-28 | 中南大学 | On-line detection device and method for heavy metal content in flue gas |
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| CN104502248A (en) * | 2014-12-31 | 2015-04-08 | 江苏天瑞仪器股份有限公司 | Automatic dual-ray detection method of mass concentration and elementary composition of particulate matter in gaseous fluid |
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| CN105866157A (en) * | 2016-05-26 | 2016-08-17 | 深圳市华唯计量技术开发有限公司 | X fluorescence spectrometer for PM2.5 heavy metal online detection |
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| CN112304828A (en) * | 2020-09-11 | 2021-02-02 | 安徽曼德克环境科技有限公司 | Raise dust on-line monitoring system |
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| CN113310862B (en) * | 2021-05-28 | 2022-03-22 | 中国矿业大学 | A device and method for continuous detection of air particles based on Raman spectroscopy |
| CN115901887A (en) * | 2022-10-14 | 2023-04-04 | 无锡环净检测技术有限公司 | Atmospheric heavy metal on-line analyzer |
| CN116148296A (en) * | 2023-04-19 | 2023-05-23 | 中国科学院过程工程研究所 | Detection method of automatic XRF detection integrated device for metal-containing solid materials |
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