CN205749298U - A kind of flow injection luminescence detection apparatus - Google Patents
A kind of flow injection luminescence detection apparatus Download PDFInfo
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- 238000004401 flow injection analysis Methods 0.000 title claims abstract description 35
- 238000000504 luminescence detection Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 52
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000012780 transparent material Substances 0.000 claims abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 229910021607 Silver chloride Inorganic materials 0.000 claims description 3
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 238000011896 sensitive detection Methods 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 6
- 238000001378 electrochemiluminescence detection Methods 0.000 description 5
- 238000002038 chemiluminescence detection Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000975 bioactive effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 230000002572 peristaltic effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000004020 luminiscence type Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
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Abstract
本实用新型公开了一种流动注射发光检测装置，包括基座、参比电极、辅助电极和工作电极，所述基座内设置有底部开口的检测腔，所述参比电极和辅助电极沿基座轴向设置在基座内，所述参比电极和辅助电极的一端悬置在检测腔内，所述参比电极和辅助电极的另一端凸出设置在基座上端面，所述工作电极由透明材质制得，所述工作电极固定在基座的底壁且与检测腔相接触，所述工作电极将检测腔的底部密封，所述基座周壁径向开设有两个通孔，所述通孔与检测腔连通。本实用新型解决了流动注射化学发光/电化学发光体系中生物纳米传感界面的构建问题，实现了自动化流动注射化学发光/电化学发光体系中生物分子的高选择、灵敏检测。
The utility model discloses a flow injection luminescence detection device, which comprises a base, a reference electrode, an auxiliary electrode and a working electrode. The seat is axially arranged in the base, one end of the reference electrode and the auxiliary electrode is suspended in the detection cavity, the other end of the reference electrode and the auxiliary electrode protrudes from the upper end surface of the base, and the working electrode Made of transparent material, the working electrode is fixed on the bottom wall of the base and is in contact with the detection chamber, the working electrode seals the bottom of the detection chamber, and two through holes are opened radially on the peripheral wall of the base, so The through hole communicates with the detection cavity. The utility model solves the construction problem of the bionano sensing interface in the flow injection chemiluminescence/electrochemiluminescence system, and realizes the highly selective and sensitive detection of biomolecules in the automatic flow injection chemiluminescence/electrochemiluminescence system.
Description
技术领域technical field
本实用新型涉及生物化学领域，特别是，涉及一种流动注射发光检测装置。The utility model relates to the field of biochemistry, in particular to a flow injection luminescent detection device.
背景技术Background technique
现有技术中，在化学发光/电化学发光体系中生物纳米传感界面构建时，纳米材料或生物分子等待检测物质固定后进行检测时，根据不同的检测试剂需要单独进行检测，造成重复操作过多，影响实验的效率。由于检测流程的相似性，是否可以实现流动注射化学发光/电化学发光的检测，一直是本领域探索的方向。In the prior art, when the biological nano-sensing interface is constructed in the chemiluminescence/electrochemiluminescence system, when the nanomaterials or biomolecules are detected after waiting for the detection substance to be fixed, the detection is performed separately according to the needs of different detection reagents, resulting in repeated operations. Many, affect the efficiency of the experiment. Due to the similarity of the detection process, whether flow injection chemiluminescence/electrochemiluminescence detection can be realized has been the direction of exploration in this field.
实用新型内容Utility model content
为了克服现有技术的不足，本实用新型的目的在于提供一种流动注射发光检测装置，解决了流动注射化学发光/电化学发光体系中生物纳米传感界面的构建问题，实现了自动化流动注射化学发光/电化学发光体系中生物分子的高选择、灵敏检测。In order to overcome the deficiencies of the prior art, the purpose of this utility model is to provide a flow injection luminescence detection device, which solves the problem of the construction of the biological nano-sensing interface in the flow injection chemiluminescence/electrochemiluminescence system, and realizes the automatic flow injection chemistry. Highly selective and sensitive detection of biomolecules in luminescence/electrochemiluminescence systems.
为解决上述问题，本实用新型所采用的技术方案如下：In order to solve the above problems, the technical scheme adopted in the utility model is as follows:
一种流动注射发光检测装置，包括基座、参比电极、辅助电极和工作电极，所述基座内设置有底部开口的检测腔，所述参比电极和辅助电极沿基座轴向设置在基座内，所述参比电极和辅助电极的一端悬置在检测腔内，所述参比电极和辅助电极的另一端凸出设置在基座上端面，所述工作电极由透明材质制得，所述工作电极固定在基座的底壁且与检测腔相接触，所述工作电极将检测腔的底部密封，所述基座周壁径向开设有两个通孔，所述通孔与检测腔连通。A flow injection luminescence detection device, comprising a base, a reference electrode, an auxiliary electrode and a working electrode, the base is provided with a detection cavity with an opening at the bottom, and the reference electrode and the auxiliary electrode are arranged on the base along the axial direction of the base In the base, one end of the reference electrode and the auxiliary electrode is suspended in the detection chamber, and the other end of the reference electrode and the auxiliary electrode protrudes from the upper end surface of the base, and the working electrode is made of transparent material , the working electrode is fixed on the bottom wall of the base and is in contact with the detection cavity. The working electrode seals the bottom of the detection cavity. cavities connected.
优选的，还包括连接座，所述参比电极和辅助电极沿连接座轴向设置在连接座内，所述基座为中空的管状体，所述连接座套接在基座上部的中空腔体内，所述基座与连接座之间的空腔为检测腔。Preferably, it also includes a connection base, the reference electrode and the auxiliary electrode are arranged in the connection base along the axial direction of the connection base, the base is a hollow tubular body, and the connection base is sleeved in the hollow cavity on the upper part of the base In the body, the cavity between the base and the connecting seat is a detection cavity.
优选的，所述参比电极通过套接件固定在连接座上。Preferably, the reference electrode is fixed on the connection base through a socket.
优选的，所述连接座与基座螺接。Preferably, the connecting seat is screwed to the base.
优选的，还包括固定板，所述固定板设置在工作电极下侧，所述工作电极通过固定板抵接在基座的底壁上。Preferably, a fixing plate is further included, the fixing plate is arranged on the lower side of the working electrode, and the working electrode abuts against the bottom wall of the base through the fixing plate.
优选的，所述固定板上开设有检测孔，所述固定板通过固定销固定在基座上。Preferably, detection holes are opened on the fixing plate, and the fixing plate is fixed on the base by fixing pins.
优选的，所述工作电极与基座的底壁之间还设置有保证基座与工作电极之间气密性的密封件。Preferably, a seal is provided between the working electrode and the bottom wall of the base to ensure airtightness between the base and the working electrode.
优选的，所述参比电极为Ag/AgCl电极或饱和甘汞电极。Preferably, the reference electrode is an Ag/AgCl electrode or a saturated calomel electrode.
优选的，所述辅助电极为铂电极。Preferably, the auxiliary electrode is a platinum electrode.
优选的，所述工作电极为贴合有ITO薄膜的玻璃板。Preferably, the working electrode is a glass plate bonded with an ITO thin film.
相比现有技术，本实用新型的有益效果在于：本实用新型在基座内设置检测腔，参比电极、辅助电极和工作电极分别和检测腔相接触，且在基座周壁上开设与检测腔连通两个通孔，实现了检测腔内溶液连续注入的同时，实现了工作电极上预设待检测物质的化学发光/电化学发光的实时检测，解决了流动注射化学发光/电化学发光体系中生物纳米传感界面的构建问题，实现了自动化流动注射化学发光/电化学发光体系中生物分子的高选择、灵敏检测。Compared with the prior art, the utility model has the beneficial effect that: the utility model is provided with a detection cavity in the base, and the reference electrode, the auxiliary electrode and the working electrode are respectively in contact with the detection cavity, and a detection cavity is provided on the peripheral wall of the base. The cavity is connected to two through holes, which realizes the continuous injection of the solution in the detection cavity, and realizes the real-time detection of chemiluminescence/electrochemiluminescence of the substance to be detected on the working electrode, and solves the problem of flow injection chemiluminescence/electrochemiluminescence system. The construction of bio-nano-sensing interface in China has realized the highly selective and sensitive detection of biomolecules in the automated flow injection chemiluminescence/electrochemiluminescence system.
附图说明Description of drawings
图1为本实用新型中流动注射发光检测装置的结构示意图；Fig. 1 is the structural representation of the flow injection luminescent detection device in the utility model;
图2为图1中流动注射发光检测装置的爆炸图；Fig. 2 is an exploded view of the flow injection luminescent detection device in Fig. 1;
图3为图1中流动注射发光检测装置沿A-A线的剖视图；Fig. 3 is a cross-sectional view of the flow injection luminescent detection device along line A-A in Fig. 1;
图4为本实用新型中基座的结构示意图；Fig. 4 is the structural representation of base in the utility model;
图5为图1中基座沿B-B线的剖视图；Fig. 5 is a sectional view of the base along the line B-B in Fig. 1;
其中，1为基座、11为通孔、12为检测腔、2为连接座、21为固定孔、3为参比电极、31为套接件、4为辅助电极、5为工作电极、51为密封件、6为固定板、61为固定销、62为检测孔。Among them, 1 is the base, 11 is the through hole, 12 is the detection cavity, 2 is the connecting seat, 21 is the fixing hole, 3 is the reference electrode, 31 is the sleeve, 4 is the auxiliary electrode, 5 is the working electrode, 51 Is a seal, 6 is a fixed plate, 61 is a fixed pin, and 62 is a detection hole.
具体实施方式detailed description
下面结合附图和具体实施方式对本实用新型作进一步详细说明。The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.
如图1、3、4、5所示，本实用新型中流动注射发光检测装置，包括基座1、参比电极3、辅助电极4和工作电极5，基座1内设置有底部开口的检测腔12，参比电极3和辅助电极4沿基座1轴向设置在基座1内，参比电极3和辅助电极4的一端悬置在检测腔12内，对检测腔12内溶液进行导电；参比电极3和辅助电极4的另一端凸出设置在基座1的上端面，方便与外界电源连接。工作电极5由透明材质制得，工作电极上可固定纳米材料和生物分子等待检测物质，工作电极5固定在基座1的底壁且与检测腔12相接触，工作电极5将检测腔12的底部密封，基座1周壁径向开设有两个通孔11，通孔11与检测腔12连通。As shown in Figures 1, 3, 4, and 5, the flow injection luminescent detection device in the utility model includes a base 1, a reference electrode 3, an auxiliary electrode 4, and a working electrode 5, and the base 1 is provided with a bottom opening detection device. The chamber 12, the reference electrode 3 and the auxiliary electrode 4 are arranged in the base 1 along the axial direction of the base 1, and one end of the reference electrode 3 and the auxiliary electrode 4 is suspended in the detection chamber 12 to conduct electricity to the solution in the detection chamber 12 ; The other end of the reference electrode 3 and the auxiliary electrode 4 protrude from the upper surface of the base 1 to facilitate connection with an external power source. The working electrode 5 is made of a transparent material, and nanomaterials and biomolecules can be fixed on the working electrode to be detected. The working electrode 5 is fixed on the bottom wall of the base 1 and is in contact with the detection chamber 12. The bottom is sealed, and two through holes 11 are radially opened on the peripheral wall of the base 1 , and the through holes 11 communicate with the detection cavity 12 .
使用时，将流动注射发光检测装置放置在光电倍增管上方(该装置和光电倍增管均在暗盒内，避光)，流动注射系统的主、副蠕动泵将溶液经其中一个通孔11泵入检测腔12，可以进行化学发光或电化学发光检测：1)当用于化学发光测定时，泵入的溶液与工作电极5上固定的待检测物质发生反应，所发出的化学发光通过工作电极5下面的光电倍增管检测，废液由另一通孔11流出；2)当用于电化学发光检测时，通过一个电化学工作站控制参比电极3、辅助电极4和工作电极5，泵入的溶液在工作电极5上发生电化学反应，所发出的光通过工作电极5下面的光电倍增管检测。检测腔12为反应提供了一个密闭的空间，工作电极5表面固定待检测物质，通过通孔11向检测腔12内不断通入反应试剂，实现快速检测；解决了流动注射化学发光/电化学发光体系中生物纳米传感界面的构建问题，实现了自动化流动注射化学发光/电化学发光体系中生物分子的高选择、灵敏检测。When in use, the flow injection luminescence detection device is placed above the photomultiplier tube (the device and the photomultiplier tube are both in the dark box, protected from light), and the main and auxiliary peristaltic pumps of the flow injection system pump the solution through one of the through holes 11. The detection chamber 12 can perform chemiluminescence or electrochemiluminescence detection: 1) When used for chemiluminescence measurement, the pumped solution reacts with the substance to be detected fixed on the working electrode 5, and the emitted chemiluminescence passes through the working electrode 5 The photomultiplier tube below detects that the waste liquid flows out from another through hole 11; 2) when it is used for electrochemiluminescence detection, the reference electrode 3, the auxiliary electrode 4 and the working electrode 5 are controlled by an electrochemical workstation, and the pumped solution An electrochemical reaction occurs on the working electrode 5 , and the emitted light is detected by a photomultiplier tube under the working electrode 5 . The detection chamber 12 provides a closed space for the reaction. The substance to be detected is fixed on the surface of the working electrode 5, and the reaction reagent is continuously introduced into the detection chamber 12 through the through hole 11 to realize rapid detection; solve the problem of flow injection chemiluminescence/electrochemiluminescence The construction of the biological nano-sensing interface in the system has realized the high selection and sensitive detection of biomolecules in the automated flow injection chemiluminescence/electrochemiluminescence system.
本实施例中，流动注射发光检测装置还包括连接座2，参比电极3和辅助电极4沿连接座2轴向设置在连接座2内，基座1为中空的管状体，连接座2套接在基座1上部的中空腔体内，基座1与连接座2之间的空腔为检测腔12。连接座2和基座1分体式的设计，方便对流动注射发光检测装置内部的检测腔12进行清洗。In this embodiment, the flow injection luminescence detection device also includes a connecting seat 2, the reference electrode 3 and the auxiliary electrode 4 are arranged in the connecting seat 2 along the axial direction of the connecting seat 2, the base 1 is a hollow tubular body, and there are two sets of connecting seats Connected to the hollow cavity on the upper part of the base 1 , the cavity between the base 1 and the connection seat 2 is a detection cavity 12 . The split design of the connection seat 2 and the base 1 facilitates cleaning of the detection cavity 12 inside the flow injection luminescence detection device.
连接座2与基座1螺接，螺接的方式方便拆卸的同时也可以提供更好的气密性。The connecting seat 2 is screwed to the base 1, and the screwed connection is convenient for disassembly and can also provide better airtightness.
可以理解的，连接座2上还可以直接套设密封环，连接座2与基座1通过螺接的方式过盈装配，进一步保证连接座2与基座1之前的气密性。It can be understood that a sealing ring can also be directly sleeved on the connecting seat 2 , and the connecting seat 2 and the base 1 are interference-fitted by means of screw connection, so as to further ensure the airtightness between the connecting seat 2 and the base 1 .
参见图2，连接座2上开设有固定孔21，参比电极3通过套接件31固定在连接座2上，参比电极3为饱和甘汞电极、辅助电极4为铂电极、工作电极5为贴合有ITO薄膜的玻璃板。套接件31上设置有固定螺丝和密封胶圈，方便参比电极3的替换和保证替换后参比电极3与连接座2之间的气密性。Referring to Fig. 2, a fixing hole 21 is opened on the connection base 2, and the reference electrode 3 is fixed on the connection base 2 through a socket 31, the reference electrode 3 is a saturated calomel electrode, the auxiliary electrode 4 is a platinum electrode, and the working electrode 5 is It is a glass plate bonded with an ITO film. The sleeve 31 is provided with a fixing screw and a sealing rubber ring, which facilitates the replacement of the reference electrode 3 and ensures the airtightness between the reference electrode 3 and the connection seat 2 after replacement.
可以理解的，参比电极3也可以选用Ag/AgCl电极，工作电极5也可以选用贴合有ITO薄膜的其它透明基材，如透明塑料板等。It can be understood that the reference electrode 3 can also be an Ag/AgCl electrode, and the working electrode 5 can also be other transparent substrate bonded with an ITO film, such as a transparent plastic plate.
本实施例中，流动注射发光检测装置还包括固定板6，固定板6设置在工作电极5下侧，工作电极5通过固定板6抵接在基座1的底壁上。固定板6上开设有检测孔62，固定板6通过固定销61固定在基座1上。固定销61固定的固定板6方便工作电极5的拆装，可根据不同实验需求对工作电极5进行快递更换。检测孔62不会影响检测过程，保证实验的准确性。In this embodiment, the flow injection luminescence detection device further includes a fixing plate 6 disposed on the lower side of the working electrode 5 , and the working electrode 5 abuts against the bottom wall of the base 1 through the fixing plate 6 . A detection hole 62 is opened on the fixing plate 6 , and the fixing plate 6 is fixed on the base 1 by a fixing pin 61 . The fixing plate 6 fixed by the fixing pin 61 facilitates the disassembly and assembly of the working electrode 5, and the working electrode 5 can be replaced by express delivery according to different experimental requirements. The detection hole 62 will not affect the detection process, ensuring the accuracy of the experiment.
可以理解的，固定板6在选用透明基材时，检测孔62无需开设。It can be understood that when the fixed plate 6 is made of a transparent substrate, the detection hole 62 does not need to be opened.
进一步的，工作电极5与基座1的底壁之间还设置有密封件51，密封件51保证基座1与工作电极5之间气密性，保证检测腔12内溶液不会泄露。Further, a seal 51 is provided between the working electrode 5 and the bottom wall of the base 1 , the seal 51 ensures airtightness between the base 1 and the working electrode 5 and ensures that the solution in the detection chamber 12 will not leak.
实施时，将流动注射发光检测装置放置在光电倍增管上方(该装置和光电倍增管均在暗盒内，避光)，流动注射系统的主、副蠕动泵将溶液经其中一个通孔11泵入检测腔12，可以进行化学发光或电化学发光检测：During implementation, the flow injection luminescence detection device is placed above the photomultiplier tube (the device and the photomultiplier tube are both in the dark box, protected from light), and the main and auxiliary peristaltic pumps of the flow injection system pump the solution through one of the through holes 11. The detection chamber 12 can perform chemiluminescence or electrochemiluminescence detection:
1)当用于化学发光测定时，工作电极5固定有生物活性物质，泵入的溶液与工作电极5上固定的生物活性物质发生相互作用，所发出的化学发光通过固定板6下面的光电倍增管检测，废液由另一个通孔11流出；1) When used for chemiluminescence measurement, the working electrode 5 is immobilized with bioactive substances, and the pumped solution interacts with the bioactive substances immobilized on the working electrode 5, and the emitted chemiluminescence passes through the photoelectric multiplication under the fixed plate 6 tube detection, the waste liquid flows out from another through hole 11;
2)当用于电化学发光检测时，通过一个电化学工作站控制参比电极3、辅助电极4和工作电极5，泵入的溶液在工作电极5上发生电化学反应，所发出的光通过固定板6下面的光电倍增管检测。2) When used for electrochemiluminescence detection, the reference electrode 3, auxiliary electrode 4 and working electrode 5 are controlled by an electrochemical workstation, the pumped solution undergoes an electrochemical reaction on the working electrode 5, and the emitted light passes through the fixed Plate 6 below the photomultiplier tube detection.
对本领域的技术人员来说，可根据以上描述的技术方案以及构思，做出其它各种相应的改变以及形变，而所有的这些改变以及形变都应该属于本实用新型权利要求的保护范围之内。For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and ideas described above, and all these changes and deformations should fall within the protection scope of the claims of the present utility model.
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