CN105259279B - ion chromatography suppressor-charge detector integrated device - Google Patents
ion chromatography suppressor-charge detector integrated device Download PDFInfo
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- CN105259279B CN105259279B CN201510826649.3A CN201510826649A CN105259279B CN 105259279 B CN105259279 B CN 105259279B CN 201510826649 A CN201510826649 A CN 201510826649A CN 105259279 B CN105259279 B CN 105259279B
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- screen
- leacheate
- regenerated liquid
- liquid
- 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 a kind of directional migration exchange realizing ion under the common effect of electric field and ion exchange membrane
Ion chromatographic eliminator-electric charge detector integrated device, is especially a kind of current collection chemical film suppressor and the inspection of membranous type electric charge
Survey device in the integrating device of one.
Background technology
Electric conductivity detector is detector the most frequently used in chromatography of ions, although as the development of chromatography of ions correlation technique,
Occur in that new separation and detection pattern, but suppressive Conductivity detection is still most widely used detection means.Suppressor is made
For a kind of critical component of chromatography of ions, while reducing leacheate background conductance, improve the electrical conductivity of sample, this pair
Being greatly improved of sulfate by ion chromatography sensitivity is achieved under recast.Through the development of decades, suppressor is the most more
The new replacement, the ion chromatographic eliminator of current main flow is to utilize the common effect of electric field and ion exchange membrane to realize ion orientation to move
Transfer the electrochemistry thin film suppressor changed.This electrochemistry thin film suppressor uses homogeneous ion-exchange membrane, this ion
Exchange membrane membrane surface resistance is less, and current efficiency is higher.
Electric charge detector supplementing as electric conductivity detector, is a kind of general under the common effect of electric field and ion exchange membrane
The anions and canons of center-aisle migrates to positive and negative electrode respectively, it is achieved desalination and the device of charge detection purpose, particularly in inspection
Survey weak electrolyte aspect and there is the advantage of uniqueness.Electric charge detector and suppressed conductivity detector are combined, many can be obtained
Extra analysis information.
In typical ion chromatography system, the dead volume between analytical column and detector, including the dead volume of suppressor
With middle connecting line, sample diffusion and peak stretching can be caused, reduce separation efficiency.It addition, electrochemistry thin film suppressor is
A kind of multilayer lamination structure, mostly the regenerated liquid entrance and exit of this type of suppressor existing is, in the both sides of regenerated liquid passage, to exist
Assembling inconvenience, sealing is poor, is susceptible to the problem such as interchannel leakage and outside leakage, to the operation and maintenance of suppressor
Make troubles.
Summary of the invention
It is an object of the invention to provide a kind of ion chromatographic eliminator-electric charge detector integrated device, divide to reducing
While dead volume between analysis post and detector, solve existing ion chromatographic eliminator interchannel leakage and outside leakage is asked
Topic.
For realizing object above, the open techniques below scheme of the present invention: a kind of ion chromatographic eliminator-electric charge detector collection
Become device, including one layer of anode regenerated liquid screen, one layer of cathode regenerative liquid screen, two-layer common electrode regenerated liquid screen, one layer
Suppressor leacheate screen and a layer charge detector leacheate screen, regenerated liquid screen arranges regenerated liquid passage, leacheate
Leacheate passage is set on screen, it is characterised in that: outside described anode regenerated liquid screen, it is provided with anode, anode regenerated liquid net
Screen is provided with leacheate outlet, regenerated liquid entrance and exit；It is provided with negative electrode, cathode regenerative outside described cathode regenerative liquid screen
Liquid screen is provided with leacheate entrance, regenerated liquid entrance and exit；It is provided with between described two-layer common electrode regenerated liquid screen
One common electrode, common electrode is connected with external power source through platinum filament through hole by a platinum filament, two-layer common electrode regenerated liquid screen
It is provided with leacheate through hole；Described electric charge detector leacheate screen is provided with regenerated liquid through hole；At described anode regenerated liquid
Being provided with one layer of anion exchange membrane between screen and electric charge detector leacheate screen, film is provided with leacheate and regenerated liquid leads to
Hole；It is provided with one layer of cation exchange membrane, film between described common electrode regenerated liquid screen and electric charge detector leacheate screen
It is provided with leacheate and regenerated liquid through hole；At described common electrode regenerated liquid screen and suppressor leacheate screen, cathode regenerative
Being respectively provided with a piece of cation exchange membrane between liquid screen and suppressor 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 analysis liquid that chromatographic column flows out is flowed through suppressor successively by leacheate entrance
Leacheate screen and electric charge detector leacheate screen, exit into detection cell from leacheate outlet；Regenerated liquid is regenerated by anode
After the regenerated liquid entrance of liquid screen flows through anode regenerated liquid screen and common electrode regenerated liquid screen, flow out from regenerated liquid outlet,
After regenerated liquid entrance from cathode regenerative liquid screen flows through cathode regenerative liquid screen again, exit into waste liquid from regenerated liquid outlet.
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 cathode regenerative liquid screen and anode regenerated liquid net respectively
The outside of screen.
As a preferred version, described common electrode is close in the middle of two-layer common electrode regenerated liquid screen, can be simultaneously
Anode and the negative electrode of electric charge detector as suppressor.
As a preferred version, described anode regenerated liquid screen, anion exchange membrane, electric charge detector leacheate net
Screen, the cation exchange membrane between common electrode regenerated liquid screen and electric charge detector leacheate screen, common electrode regenerated liquid
The through hole of platinum filament needed for placing connection common electrode it is equipped with on screen.
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.
It is an advantage of the current invention that: electrochemistry thin film suppressor and membranous type electric charge detector are integrated in one by the present invention,
Effectively reduce the dead volume between analytical column and detector, reduce sample diffusion and peak stretching, improve separation efficiency；The present invention
The regenerated liquid entrance and exit of regenerated liquid screen in the same side of regenerated liquid passage, solve existing chromatography of ions electrochemistry thin
Membrane suppressor interchannel leakage and outside leakage problem, have a better seal, and simple in construction is easy to assembly.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the present invention.
Labelling in accompanying drawing is respectively as follows:
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. suppressor 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.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Experimental technique used in following embodiment such as without
Specified otherwise, is conventional method.Material used in following embodiment, reagent etc., if no special instructions, all can be from business way
Footpath obtains.Should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention.
Embodiment
See accompanying drawing 1, ion chromatographic eliminator-electric charge detector integrated device, including one layer of anode regenerated liquid screen 1,
One layer of cathode regenerative liquid screen 10, two-layer common electrode regenerated liquid screen 5 and 6, one layer charge detector leacheate screen 3 and
Layer suppressor leacheate screen 8, regenerated liquid screen arranges regenerated liquid passage, leacheate screen arranges leacheate passage,
Being provided with anode 11 outside anode regenerated liquid screen 1, anode regenerated liquid screen 1 is provided with leacheate outlet 20, regenerated liquid entrance a21
B22 is exported with regenerated liquid；Being provided with negative electrode 12 outside cathode regenerative liquid screen 10, cathode regenerative liquid screen 10 is provided with leacheate
Entrance 19, regenerated liquid entrance b23 and regenerated liquid outlet b24；It is provided with altogether between two-layer common electrode regenerated liquid screen 5 and 6
With electrode 13, common electrode 13 is connected with external power source through platinum filament through hole 15 by a platinum filament 14, 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；At anode regenerated liquid
Being provided with one layer of anion exchange membrane 2 between screen 1 and electric charge detector leacheate screen 3, film is provided with leacheate and regenerated liquid
Through hole；One layer of cation exchange membrane a4 it is provided with between common electrode regenerated liquid screen 5 and electric charge detector leacheate screen 3,
Film is provided with leacheate and regenerated liquid through hole；At common electrode regenerated liquid screen 6 and suppressor leacheate screen 8, cathode regenerative
A piece of cation exchange membrane b7 and cation exchange membrane c9 it is respectively provided with, on film between liquid screen 10 and suppressor leacheate screen 8
It is provided with leacheate through hole；Regenerated liquid entrance and exit is positioned at the same side of regenerated liquid passage；The analysis liquid that chromatographic column flows out is by drenching
Wash liquor inlet 19 flows through suppressor leacheate screen 8 and electric charge detector leacheate screen 3 successively, from leacheate outlet 20 outflow
Enter detection cell；Regenerated liquid is flowed through anode regenerated liquid screen 1 by the regenerated liquid entrance a21 of anode regenerated liquid screen 1 and shares electricity
After pole regenerated liquid screen 5 and 6, flow out from regenerated liquid outlet a22, then flow from the regenerated liquid entrance b23 of cathode regenerative liquid screen 10
After cathode regenerative liquid screen 10, exit into waste liquid from regenerated liquid outlet b24.
Regenerated liquid entrance and exit is positioned at the same side of regenerated liquid passage, refers to using regenerated liquid passage as centrage, then
The entrance and exit of raw liquid is respectively positioned on the same side of regenerated liquid passage rather than 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 cathode regenerative liquid screen and the outside of anode regenerated liquid screen respectively；Described shared
Electrode is close in the middle of two-layer common electrode regenerated liquid screen, can be simultaneously as the anode of suppressor and the moon of electric charge detector
Pole.
As a preferred version, described anode regenerated liquid screen, anion exchange membrane, electric charge detector leacheate net
Screen, the cation exchange membrane between common electrode regenerated liquid screen and electric charge detector leacheate screen, common electrode regenerated liquid
The through hole of platinum filament needed for placing connection common electrode it is equipped with on screen.
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, leacheate stream 16 and regeneration liquid stream by order shown in accompanying drawing 1 by the present invention
Road 17,18 is separate, and sealing is good.Said structure makes the ion chromatographic eliminator-electric charge detector of the present invention integrated
Device not only has suppression function but also have detection function, and analysis liquid stream, through leacheate stream, enters electricity after suppressor suppresses
Lotus detector detects.
Utilize this device, the detection of conventional anion can be realized under hydroxyl leacheate system, to hydroxyl leacheate
Inhibition is good, and background conductance is low, and baseline noise is little, and electric charge detector has the most linear and detection to Anionic recognition
Limit, repeatability and having good stability.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (7)
1. ion chromatographic eliminator-electric charge detector integrated device, including one layer of anode regenerated liquid screen, one layer of negative electrode again
Raw liquid screen, two-layer common electrode regenerated liquid screen, one layer of suppressor leacheate screen and a layer charge detector leacheate net
Screen, above-mentioned all regenerated liquid screens is respectively provided with regenerated liquid passage, above-mentioned all leacheate screens is respectively provided with leacheate passage,
It is characterized in that: be provided with anode outside described anode regenerated liquid screen, anode regenerated liquid screen is provided with leacheate and exports,
Raw liquid entrance and exit；Being provided with negative electrode outside described cathode regenerative liquid screen, cathode regenerative liquid screen is provided with leacheate and enters
Mouth, regenerated liquid entrance and exit；Being provided with a common electrode between described two-layer common electrode regenerated liquid screen, common electrode is led to
Crossing a platinum filament to be connected with external power source through platinum filament through hole, two-layer common electrode regenerated liquid screen is provided with leacheate through hole；Institute
State electric charge detector leacheate screen and be provided with regenerated liquid through hole；At described anode regenerated liquid screen and electric charge detector leacheate
Being provided with one layer of anion exchange membrane between screen, film is provided with a leacheate through hole and two regenerated liquid through holes；Described common
With being provided with one layer of cation exchange membrane between electrode regenerated liquid screen and electric charge detector leacheate screen, film is provided with a pouring
Washing liquid through hole and two regenerated liquid through holes；At described common electrode regenerated liquid screen and suppressor leacheate screen, cathode regenerative
Being respectively provided with a piece of cation exchange membrane between liquid screen and suppressor 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 analysis liquid that chromatographic column flows out is flowed through suppressor successively by leacheate entrance
Leacheate screen and electric charge detector leacheate screen, exit into detection cell from leacheate outlet；Regenerated liquid is regenerated by anode
After the regenerated liquid entrance of liquid screen flows through anode regenerated liquid screen and common electrode regenerated liquid screen, flow out from regenerated liquid outlet,
After regenerated liquid entrance from cathode regenerative liquid screen flows through cathode regenerative liquid screen again, exit into waste liquid from regenerated liquid outlet.
A kind of ion chromatographic eliminator-electric charge detector integrated device the most according to claim 1, it is characterised in that institute
Stating negative electrode and anode is platinum electrode, described common electrode is porous platinum electrode.
A kind of ion chromatographic eliminator-electric charge detector integrated device the most according to claim 1, it is characterised in that institute
State negative electrode and anode is close to cathode regenerative liquid screen and the outside of anode regenerated liquid screen respectively.
A kind of ion chromatographic eliminator-electric charge detector integrated device the most according to claim 1, it is characterised in that institute
State common electrode and be close in the middle of two-layer common electrode regenerated liquid screen, can be simultaneously as the anode of suppressor and electric charge detector
Negative electrode.
A kind of ion chromatographic eliminator-electric charge detector integrated device the most according to claim 1, it is characterised in that institute
State anode regenerated liquid screen, anion exchange membrane, electric charge detector leacheate screen, common electrode regenerated liquid screen and electric charge inspection
Survey and be equipped with on the cation exchange membrane between device leacheate screen, common electrode regenerated liquid screen for placing the shared electricity of connection
The through hole of the most required platinum filament.
A kind of ion chromatographic eliminator-electric charge detector integrated device the most according to claim 1, it is characterised in that institute
State negative electrode and the external constant current supply of common electrode.
A kind of ion chromatographic eliminator-electric charge detector integrated device the most according to claim 1, it is characterised in that institute
State anode and the external stiff of common electrode or constant current supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510826649.3A CN105259279B (en) | 2015-11-25 | 2015-11-25 | ion chromatography suppressor-charge detector integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510826649.3A CN105259279B (en) | 2015-11-25 | 2015-11-25 | ion chromatography suppressor-charge detector integrated device |
Publications (2)
| Publication Number | Publication Date |
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| CN105259279A CN105259279A (en) | 2016-01-20 |
| CN105259279B true 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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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932507B (en) * | 2016-08-31 | 2023-10-03 | 青岛仪趣分析仪器有限公司 | Miniature ion exchange membrane isolation sealing high pressure resistant ion chromatographic suppressor |
| US11534700B2 (en) * | 2017-07-24 | 2022-12-27 | Shimadzu Corporation | Ion suppressor and ion chromatograph |
| CN113631918B (en) * | 2019-03-27 | 2023-09-26 | 株式会社岛津制作所 | Ion suppressor |
| CN110508139B (en) * | 2019-08-28 | 2021-08-03 | 华东理工大学 | Electrodialysis micropump |
| 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 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569365A (en) * | 1995-03-03 | 1996-10-29 | Dionex Corporation | Intermittent electrolytic membrane suppressor regeneration for ion chromatography |
| US6200477B1 (en) * | 1998-05-06 | 2001-03-13 | Alltech Associates, Inc. | Continuously regenerated and integrated suppressor and detector for suppressed ion chromatography and method |
| US6077434A (en) * | 1999-01-15 | 2000-06-20 | Dionex Corporation | Current-efficient suppressors and method of use |
| US8597571B2 (en) * | 2008-01-28 | 2013-12-03 | Dionex Corporation | Electrolytic eluent recycle device, apparatus and method of use |
| US8293099B2 (en) * | 2008-02-28 | 2012-10-23 | Dionex Corporation | Ion detector and system |
| CN102253163A (en) * | 2010-05-18 | 2011-11-23 | 北京东西分析仪器有限公司 | Electrochemistry continuously regenerated CO2 suppressor |
| CN102735792B (en) * | 2012-07-13 | 2014-08-13 | 青岛盛瀚色谱技术有限公司 | Resin filling type ion chromatography electrolysis self-regeneration suppressor |
| CN202974964U (en) * | 2012-07-29 | 2013-06-05 | 安徽皖仪科技股份有限公司 | Ion chromatography electrochemical suppressor |
| US9964510B2 (en) * | 2013-09-16 | 2018-05-08 | Dionex Corporation | Electrolytic four-channel device and method |
| CN104237450A (en) * | 2014-09-30 | 2014-12-24 | 华南理工大学 | Multifunctional ion chromatography suppressor for cations and anions |
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