CN105259279A - Ion chromatography suppressor-charge detector integrated device - Google Patents
Ion chromatography suppressor-charge detector integrated device Download PDFInfo
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- CN105259279A CN105259279A CN201510826649.3A CN201510826649A CN105259279A CN 105259279 A CN105259279 A CN 105259279A CN 201510826649 A CN201510826649 A CN 201510826649A CN 105259279 A CN105259279 A CN 105259279A
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- screen
- regenerated liquid
- leacheate
- common electrode
- charge detector
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Abstract
The invention discloses an ion chromatography suppressor-charge detector integrated device which comprises a layer of anode regeneration liquid screen, a layer of cathode regeneration liquid screen, two layers of common electrode regeneration liquid screens, a layer of suppressor leacheate screen, a layer of charge detector leacheate screen, a layer of anion exchange film and three layers of cation exchange film, wherein an anode is arranged on the outer side of the anode regeneration liquid screen; a cathode is arranged on the outer side of the cathode regeneration liquid screen; a common electrode is arranged between the two layers of common electrode regeneration liquid screens. According to the ion chromatography suppressor-charge detector integrated device, an electrochemical thin film suppressor and a film type charge detector are integrated, so that the dead volume between an analytical column and a detector is effectively reduced, sample diffusion and peak expansion width are reduced, and the separation efficiency is improved; meanwhile, regeneration liquid inlets and regeneration liquid outlets of the regeneration liquid screens are formed in the same side of a regeneration liquid channel, so that the problems of inter-channel liquid leakage and external liquid leakage of an existing ion chromatography electrochemical thin film suppressor are solved; the ion chromatography suppressor-charge detector integrated device is higher in sealing property, simple in structure and convenient to assemble.
Description
Technical field
The present invention relates to ion chromatographic eliminator-electric charge detector integrated device that a kind of directional migration realizing ion under the acting in conjunction of electric field and amberplex exchanges, is specifically that a kind of current collection chemical film rejector and membranous type electric charge detector are in the integrating device of one.
Background technology
Electric conductivity detector is detecting device the most frequently used in chromatography of ions, although along with the development of chromatography of ions correlation technique, occurred new separation and detection pattern, suppressive Conductivity detection is still most widely used detection means.Rejector, as a kind of critical component of chromatography of ions, improves the conductivity of sample, achieves the raising greatly of sulfate by ion chromatography sensitivity under this double action while reducing leacheate background conductance.Through the development of decades, rejector constantly updates, and the ion chromatographic eliminator of current main flow is the galvanochemistry film rejector utilizing the acting in conjunction of electric field and amberplex to realize the exchange of ion directional migration.This galvanochemistry film rejector uses homogeneous ion-exchange membrane, and this amberplex membrane surface resistance is less, and current efficiency is higher.
Electric charge detector supplementing as electric conductivity detector, a kind ofly under the acting in conjunction of electric field and amberplex, the anions and canons of center-aisle is migrated to positive and negative electrode respectively, realize the device of desalination and charge detection object, particularly detect the advantage in weak electrolyte with uniqueness.Electric charge detector and suppressed conductivity detector are combined, many extra analytical informations can be obtained.
In typical ion chromatography system, the dead volume between analytical column and detecting device, comprises the dead volume of rejector and middle connecting line, can cause sample diffusion and peak stretching, reduce separation efficiency.In addition, galvanochemistry film rejector is a kind of multilayer lamination structure, mostly the regenerated liquid entrance and exit of this type of rejector existing is in the both sides of regenerated liquid passage, there is assembling inconvenient, sealing is poor, the problems such as the leakage of easy generation interchannel and outside leakage, make troubles to the operation and maintenance of rejector.
Summary of the invention
The object of the present invention is to provide a kind of ion chromatographic eliminator-electric charge detector integrated device, while reducing the dead volume between analytical column and detecting device, solve the leakage of existing ion chromatographic eliminator interchannel and outside leakage problem.
For realizing above object, the present invention discloses following technical scheme: a kind of ion chromatographic eliminator-electric charge detector integrated device, comprise one deck anode regenerated liquid screen, one deck cathode regenerative liquid screen, two-layer common electrode regenerated liquid screen, one deck rejector leacheate screen and one deck electric charge detector leacheate screen, regenerated liquid screen is arranged regenerated liquid passage, leacheate screen is arranged leacheate passage, it is characterized in that: outside described anode regenerated liquid screen, be provided with anode, anode regenerated liquid screen is provided with leacheate outlet, regenerated liquid entrance and exit; Outside described cathode regenerative liquid screen, be provided with negative electrode, cathode regenerative liquid screen is provided with leacheate entrance, regenerated liquid entrance and exit; Between described two-layer common electrode regenerated liquid screen, be provided with a common electrode, common electrode is connected with external power source through platinum filament through hole by a platinum filament, and two-layer common electrode regenerated liquid screen is provided with leacheate through hole; Described electric charge detector leacheate screen is provided with regenerated liquid through hole; Between described anode regenerated liquid screen and electric charge detector leacheate screen, be provided with one deck anion-exchange membrane, film is provided with leacheate and regenerated liquid through hole; Between described common electrode regenerated liquid screen and electric charge detector leacheate screen, be provided with one deck cation-exchange membrane, film is provided with leacheate and regenerated liquid through hole; At described common electrode regenerated liquid screen and rejector leacheate screen, be respectively provided with a slice cation-exchange membrane between cathode regenerative liquid screen and rejector leacheate screen, film is provided with leacheate through hole; Regenerated liquid entrance and exit is positioned at the same side of regenerated liquid passage; The analytic liquid that chromatographic column flows out flows through rejector leacheate screen and electric charge detector leacheate screen successively by leacheate entrance, enters detection cell from leacheate outlet outflow; After regenerated liquid flows through anode regenerated liquid screen and common electrode regenerated liquid screen by the regenerated liquid entrance of anode regenerated liquid screen, flow out from regenerated liquid outlet, after flowing through cathode regenerative liquid screen from the regenerated liquid entrance of cathode regenerative liquid screen again, enter waste liquid from regenerated liquid outlet outflow.
As a preferred version, described negative electrode, anode and common electrode are platinum electrode, and wherein common electrode is porous platinum electrode.
As a preferred version, described negative electrode and anode are close to the outside of cathode regenerative liquid screen and anode regenerated liquid screen respectively.
As a preferred version, described common electrode is close in the middle of two-layer common electrode regenerated liquid screen, can simultaneously as the anode of rejector and the negative electrode of electric charge detector.
As a preferred version, described anode regenerated liquid screen, anion-exchange membrane, electric charge detector leacheate screen, cation-exchange membrane between common electrode regenerated liquid screen and electric charge detector leacheate screen, common electrode regenerated liquid screen are equipped with for placing the through hole connecting platinum filament needed for common electrode.
As a preferred version, described negative electrode and the external constant current supply of common electrode.
As a preferred version, described anode and the external stiff of common electrode or constant current supply.
The invention has the advantages that: galvanochemistry film rejector and membranous type electric charge detector are integrated in one by the present invention, effectively reduce the dead volume between analytical column and detecting device, reduce sample diffusion and peak stretching, improve separation efficiency; The regenerated liquid entrance and exit of regenerated liquid screen of the present invention, in the same side of regenerated liquid passage, solves existing chromatography of ions galvanochemistry film rejector interchannel leakage and outside leakage problem, has better sealing, and structure is simple, easy to assembly.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
Mark in accompanying drawing is respectively:
1. anode regenerated liquid screen; 2. anion-exchange membrane;
3. electric charge detector leacheate screen; 4. cation-exchange membrane a;
5. common electrode regenerated liquid screen a; 6. common electrode regenerated liquid screen b;
7. cation-exchange membrane b; 8. rejector leacheate screen;
9. cation-exchange membrane c; 10. cathode regenerative liquid screen;
11. anodes; 12. negative electrodes;
13. common electrodes; 14. platinum filaments;
15. platinum filament through holes; 16. leacheate streams;
17. regenerated liquid stream a; 18. regenerated liquid stream b;
19. leacheate entrances; 20. leacheate outlets;
21. regenerated liquid entrance a; 22. regenerated liquid outlet a;
23. regenerated liquid entrance b; 24. regenerated liquid outlet b.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.The experimental technique used in following embodiment if no special instructions, is conventional method.Material used in following embodiment, reagent etc., if no special instructions, all can obtain from commercial channels.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.
Embodiment
See accompanying drawing 1, ion chromatographic eliminator-electric charge detector integrated device, comprise one deck anode regenerated liquid screen 1, one deck cathode regenerative liquid screen 10, two-layer common electrode regenerated liquid screen 5 and 6, one deck electric charge detector leacheate screen 3 and one deck rejector leacheate screen 8, regenerated liquid screen is arranged regenerated liquid passage, leacheate screen is arranged leacheate passage, outside anode regenerated liquid screen 1, be provided with anode 11, anode regenerated liquid screen 1 is provided with leacheate outlet 20, regenerated liquid entrance a21 and regenerated liquid outlet b22; Outside cathode regenerative liquid screen 10, be provided with negative electrode 12, cathode regenerative liquid screen 10 is provided with leacheate entrance 19, regenerated liquid entrance b23 and regenerated liquid outlet b24; Between two-layer common electrode regenerated liquid screen 5 and 6, be provided with a common electrode 13, common electrode 13 is connected with external power source through platinum filament through hole 15 by a platinum filament 14, and two-layer common electrode regenerated liquid screen 5 and 6 is provided with leacheate through hole; Electric charge detector leacheate screen 3 is provided with regenerated liquid through hole; Between anode regenerated liquid screen 1 and electric charge detector leacheate screen 3, be provided with one deck anion-exchange membrane 2, film is provided with leacheate and regenerated liquid through hole; Between common electrode regenerated liquid screen 5 and electric charge detector leacheate screen 3, be provided with one deck cation-exchange membrane a4, film is provided with leacheate and regenerated liquid through hole; At common electrode regenerated liquid screen 6 and rejector leacheate screen 8, be respectively provided with a slice cation-exchange membrane b7 and cation-exchange membrane c9 between cathode regenerative liquid screen 10 and rejector leacheate screen 8, film is provided with leacheate through hole; Regenerated liquid entrance and exit is positioned at the same side of regenerated liquid passage; The analytic liquid that chromatographic column flows out flows through rejector leacheate screen 8 and electric charge detector leacheate screen 3 successively by leacheate entrance 19, flows out enter detection cell from leacheate outlet 20; After regenerated liquid flows through anode regenerated liquid screen 1 and common electrode regenerated liquid screen 5 and 6 by the regenerated liquid entrance a21 of anode regenerated liquid screen 1, flow out from regenerated liquid outlet a22, after flowing through cathode regenerative liquid screen 10 from the regenerated liquid entrance b23 of cathode regenerative liquid screen 10 again, flow out from regenerated liquid outlet b24 and enter waste liquid.
Regenerated liquid entrance and exit is positioned at the same side of regenerated liquid passage, refers to using regenerated liquid passage as center line, and the entrance and exit of regenerated liquid is all positioned at the same side of regenerated liquid passage, instead of is distributed in the both sides of regenerated liquid passage.
As a preferred version, described negative electrode, anode and common electrode are platinum electrode, and wherein common electrode is porous platinum electrode; Described negative electrode and anode are close to the outside of cathode regenerative liquid screen and anode regenerated liquid screen respectively; Described common electrode is close in the middle of two-layer common electrode regenerated liquid screen, can simultaneously as the anode of rejector and the negative electrode of electric charge detector.
As a preferred version, described anode regenerated liquid screen, anion-exchange membrane, electric charge detector leacheate screen, cation-exchange membrane between common electrode regenerated liquid screen and electric charge detector leacheate screen, common electrode regenerated liquid screen are equipped with for placing the through hole connecting platinum filament needed for common electrode.
As a preferred version, described negative electrode and the external constant current supply of common electrode.
As a preferred version, described anode and the external stiff of common electrode or constant current supply.
Each building block is carried out stack assembly by order shown in accompanying drawing 1 by the present invention, leacheate stream 16 and regenerated liquid stream 17,18 separate, and sealing is good.Said structure makes ion chromatographic eliminator of the present invention-electric charge detector integrated device not only have inhibit feature but also have measuring ability, and analytic liquid flows through leacheate stream, enters electric charge detector and detect after rejector suppresses.
Utilize this device, the detection of conventional anion can be realized under hydroxyl leacheate system, good to hydroxyl leacheate inhibition, background conductance is low, baseline noise is little, and electric charge detector has preferably linear and detectability to Anionic recognition, reappearance and having good stability.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. ion chromatographic eliminator-electric charge detector integrated device, comprise one deck anode regenerated liquid screen, one deck cathode regenerative liquid screen, two-layer common electrode regenerated liquid screen, one deck rejector leacheate screen and one deck electric charge detector leacheate screen, regenerated liquid screen is arranged regenerated liquid passage, leacheate screen is arranged leacheate passage, it is characterized in that: outside described anode regenerated liquid screen, be provided with anode, anode regenerated liquid screen is provided with leacheate outlet, regenerated liquid entrance and exit; Outside described cathode regenerative liquid screen, be provided with negative electrode, cathode regenerative liquid screen is provided with leacheate entrance, regenerated liquid entrance and exit; Between described two-layer common electrode regenerated liquid screen, be provided with a common electrode, common electrode is connected with external power source through platinum filament through hole by a platinum filament, and two-layer common electrode regenerated liquid screen is provided with leacheate through hole; Described electric charge detector leacheate screen is provided with regenerated liquid through hole; Between described anode regenerated liquid screen and electric charge detector leacheate screen, be provided with one deck anion-exchange membrane, film is provided with leacheate and regenerated liquid through hole; Between described common electrode regenerated liquid screen and electric charge detector leacheate screen, be provided with one deck cation-exchange membrane, film is provided with leacheate and regenerated liquid through hole; At described common electrode regenerated liquid screen and rejector leacheate screen, be respectively provided with a slice cation-exchange membrane between cathode regenerative liquid screen and rejector leacheate screen, film is provided with leacheate through hole; Regenerated liquid entrance and exit is positioned at the same side of regenerated liquid passage; The analytic liquid that chromatographic column flows out flows through rejector leacheate screen and electric charge detector leacheate screen successively by leacheate entrance, enters detection cell from leacheate outlet outflow; After regenerated liquid flows through anode regenerated liquid screen and common electrode regenerated liquid screen by the regenerated liquid entrance of anode regenerated liquid screen, flow out from regenerated liquid outlet, after flowing through cathode regenerative liquid screen from the regenerated liquid entrance of cathode regenerative liquid screen again, enter waste liquid from regenerated liquid outlet outflow.
2. a kind of ion chromatographic eliminator-electric charge detector integrated device according to claim 1, it is characterized in that, described negative electrode, anode and common electrode are platinum electrode, and wherein common electrode is porous platinum electrode.
3. a kind of ion chromatographic eliminator-electric charge detector integrated device according to claim 1, is characterized in that, described negative electrode and anode are close to the outside of cathode regenerative liquid screen and anode regenerated liquid screen respectively.
4. a kind of ion chromatographic eliminator-electric charge detector integrated device according to claim 1, is characterized in that, described common electrode is close in the middle of two-layer common electrode regenerated liquid screen, can simultaneously as the anode of rejector and the negative electrode of electric charge detector.
5. a kind of ion chromatographic eliminator-electric charge detector integrated device according to claim 1, it is characterized in that, described anode regenerated liquid screen, anion-exchange membrane, electric charge detector leacheate screen, cation-exchange membrane between common electrode regenerated liquid screen and electric charge detector leacheate screen, common electrode regenerated liquid screen being equipped with for placing the through hole connecting platinum filament needed for common electrode.
6. a kind of ion chromatographic eliminator-electric charge detector integrated device according to claim 1, is characterized in that, described negative electrode and the external constant current supply of common electrode.
7. a kind of ion chromatographic eliminator-electric charge detector integrated device according to claim 1, is characterized in that, described anode and the external stiff of common electrode or constant current supply.
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| CN201510826649.3A CN105259279B (en) | 2015-11-25 | 2015-11-25 | ion chromatography suppressor-charge detector integrated device |
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|---|---|---|---|
| CN201510826649.3A CN105259279B (en) | 2015-11-25 | 2015-11-25 | ion chromatography suppressor-charge detector integrated device |
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| CN105259279A true CN105259279A (en) | 2016-01-20 |
| CN105259279B CN105259279B (en) | 2017-01-11 |
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| CN201510826649.3A Expired - Fee Related CN105259279B (en) | 2015-11-25 | 2015-11-25 | ion chromatography suppressor-charge detector integrated device |
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| CN106932507A (en) * | 2016-08-31 | 2017-07-07 | 青岛仪趣分析仪器有限公司 | The high pressure resistant ion chromatographic eliminator of minitype ion exchange membrane isolating seal |
| CN110508139A (en) * | 2019-08-28 | 2019-11-29 | 华东理工大学 | A kind of electrodialysis Micropump |
| CN110678749A (en) * | 2017-07-24 | 2020-01-10 | 株式会社岛津制作所 | Ion suppressor and ion chromatograph |
| CN113631918A (en) * | 2019-03-27 | 2021-11-09 | 株式会社岛津制作所 | Ion suppressor |
| CN114354832A (en) * | 2021-12-31 | 2022-04-15 | 杭州谱育科技发展有限公司 | Dual channel ion chromatography suppressor and method |
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| CN106932507A (en) * | 2016-08-31 | 2017-07-07 | 青岛仪趣分析仪器有限公司 | The high pressure resistant ion chromatographic eliminator of minitype ion exchange membrane isolating seal |
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| CN110678749A (en) * | 2017-07-24 | 2020-01-10 | 株式会社岛津制作所 | Ion suppressor and ion chromatograph |
| CN110678749B (en) * | 2017-07-24 | 2022-09-09 | 株式会社岛津制作所 | Ion suppressor and ion chromatograph |
| CN113631918A (en) * | 2019-03-27 | 2021-11-09 | 株式会社岛津制作所 | Ion suppressor |
| CN113631918B (en) * | 2019-03-27 | 2023-09-26 | 株式会社岛津制作所 | Ion suppressor |
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| CN114354832A (en) * | 2021-12-31 | 2022-04-15 | 杭州谱育科技发展有限公司 | Dual channel ion chromatography suppressor and method |
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Granted publication date: 20170111 Termination date: 20171125 |