CN100558941C - Binode electro-chemistry hydride generator - Google Patents
Binode electro-chemistry hydride generator Download PDFInfo
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- CN100558941C CN100558941C CNB2007101571289A CN200710157128A CN100558941C CN 100558941 C CN100558941 C CN 100558941C CN B2007101571289 A CNB2007101571289 A CN B2007101571289A CN 200710157128 A CN200710157128 A CN 200710157128A CN 100558941 C CN100558941 C CN 100558941C
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Abstract
Binode electro-chemistry hydride generator relates to a kind of hydrogen in statu nascendi of electrolysis generation and electrochemical hydride generating unit that tested element (as arsenic, selenium, antimony, germanium) forms volatile hydride of utilizing, be connected with test set, realize the combined apparatus of the online formation hydride of assay determination sample component, online high-sensitivity detection.Be provided with housing, the hydride generation system of forming by double anode list negative electrode and cation exchange resin membrane; Have the input/output interface of anolyte on two anode casings respectively, have the threeway input interface of assay determination sample component and catholyte and the output interface of joint detection equipment on the cathode shell; Two cation exchange resin membranes are respectively by on two sides that are attached to negative electrode, and the output interface three of threeway input interface, negative electrode, joint detection equipment is in the same center line.Have reagent and sample consumption less, but the hydride of the fast long-time continuous operation of favorable reproducibility, analysis speed, the tested element efficient that reacts reaches 99% with first-class advantage.
Description
Technical field
The present invention relates to a kind of hydrogen in statu nascendi of electrolysis generation and electrochemical hydride generating unit that tested element (as arsenic, selenium, antimony, germanium) forms volatile hydride of utilizing, be used for the analysis (as Atomic Fluorescence Spectroscopy (AFS), Atomic Absorption Spectroscopy AAS, plasma emission spectrometer) of atomic spectrum, realize that the ON-LINE SEPARATION of assay determination sample component, online hydride take place, the combined apparatus of online high-sensitivity detection.
Background technology
Current, when utilizing the high-sensitivity detection performance of instruments such as atomic spectrum such as Atomic Fluorescence Spectroscopy (AFS), Atomic Absorption Spectroscopy AAS, plasma emission spectrometer to carry out the detection of volatile element, all use traditional chemical reducing agent (as POTASSIUM BOROHYDRIDE etc.) to carry out hydride and react, its chemical reducing agent stability influence assay determination result's accuracy and the efficient of assay determination work.
So far, people only did some to the electrochemical hydride producer of single anode list negative electrode and explored, and the efficient that its hydride reacts is lower, and reports such as Russian scholar Smirnov M.K. only were 60%～70% in 2007.
Summary of the invention
The invention provides a kind of high-sensitivity detection performance of utilizing instruments such as atomic spectrum such as Atomic Fluorescence Spectroscopy (AFS), Atomic Absorption Spectroscopy AAS, plasma emission spectrometer, carry out the electrochemical hydride generating unit of the online detection of tested element, but have reagent and sample consumption less, the hydride of favorable reproducibility, the fast long-time continuous operation of analysis speed, the tested element efficient that reacts reaches 99% with first-class advantage.Can be widely used in the analysis field that environmental monitoring, food safety, biological medicine, health and epidemic prevention etc. relate to volatile element compound (as arsenic, selenium, antimony, germanium).Still there is not similar functional device both at home and abroad.
Binode electro-chemistry hydride generator of the present invention is provided with: housing; By double anode, single negative electrode and two hydride generation systems that cation exchange resin membrane is formed; The input/output interface that has anolyte on two anodic housings respectively has the threeway input interface and the output interface that is connected assay determination sample component test set of assay determination sample component and catholyte on the housing of negative electrode; Two cation exchange resin membranes are respectively by being attached to two sides of negative electrode, and the output interface three of threeway input interface, negative electrode, joint detection equipment is in the same center line; Double anode list negative electrode by two independently dc constant flowing power power respectively, the current density of control cathode is 0.5Acm
-2About.
Description of drawings
Fig. 1 is the structure and the work synoptic diagram of Binode electro-chemistry hydride generator of the present invention.
Be labeled as among Fig. 1:
1,1 '-anode; The 2-negative electrode; 3,3 '-cation exchange resin membrane; 4,4 '-positive column; 5,5 '-cathodic area; 6,6 '-the anolyte input interface; 7,7 '-the anolyte output interface; 8-catholyte input interface; 9-assay determination sample component input interface; The output interface of 10-joint detection equipment.
Embodiment
As shown in Figure 1, two anodes 1,1 ' lay respectively at both sides of negative electrode 2, the titanium metal wire anode of long 110mm diameter 2mm places the centre of positive column, each positive column 4,4 ' volume be respectively 55 * 13 * 10mm, have respectively on two anode casings anolyte input interface 6,6 ' and anolyte output interface 7,7 '.Each cathodic area 5,5 ' volume are respectively 55 * 13 * 0.2mm, the threeway input interface of 55 * 13 * 2mm lead metal plate negative electrode, assay determination sample component and catholyte, the output interface three of joint detection equipment are in the same center line, and have catholyte input interface 8 and the three-way interface of assay determination sample component input interface 9, the output interface 10 of joint detection equipment on the cathode shell.Two cation exchange resin membranes 3,3 ' respectively are by on two sides that are attached to negative electrode 2.Housing adopts tetrafluoroethylene or anti-corrosion plastics.
0.50molL during work
-1H
2SO
4Electrolytic solution is transported to anolyte input interface 6,6 ' and catholyte input interface 8 respectively by peristaltic pump, and the flow of anolyte is 4mLmin
-1, the flow of catholyte is 1mLmin
-1The assay determination sample component is by input interface 9 inputs, the volatile hydride of the assay determination element after electrochemical hydride reacts and catholyte are by output interface 10 outputs of joint detection equipment, double anode list negative electrode by two independently dc constant flowing power power respectively, the current density of control cathode is 0.5Acm
-2About.
Owing to adopt the structure of double anode list negative electrode, the surface of negative electrode is fully used, and two cation exchange resin membranes 3,3 ' respectively are by being attached to the both sides of negative electrode 2, the dead volume of negative electrode is very little, reduced of dilution and the diffusion of assay determination sample component, improved the sensitivity of assay determination in the cathodic area.
Owing to adopt bigger positive column volume, reduced the temperature rise of electrochemical hydride producer, and helped keeping the working temperature substantially constant of electrochemical hydride producer, thereby improved the precision of assay determination.
Claims (6)
1. a Binode electro-chemistry hydride generator is characterized in that being provided with housing, by double anode, single negative electrode and two hydride generation systems that cation exchange resin membrane is formed; Two anodes place the both sides of negative electrode respectively, the input/output interface that has anolyte on two anodic housings respectively has the threeway input interface and the output interface that is connected assay determination sample component test set of assay determination sample component and catholyte on the housing of negative electrode; Two cation exchange resin membranes are respectively by on two sides that are attached to negative electrode, and the output interface three of threeway input interface, negative electrode, joint detection equipment is in the same center line; Double anode list negative electrode by two independently dc constant flowing power power respectively, the current density of control cathode is 0.5Acm
-2About.
2. Binode electro-chemistry hydride generator according to claim 1 is characterized in that the housing of electrochemical hydride producer adopts tetrafluoroethylene or anti-corrosion plastics.
3. Binode electro-chemistry hydride generator according to claim 1 is characterized in that anode is a kind of platinum or titanium metal, and negative electrode is a kind of platinum or lead metal.
4. Binode electro-chemistry hydride generator according to claim 1 is characterized in that anode is the metal sheet of a kind of platinum or titanium, or the wire of a kind of platinum or titanium.
5. Binode electro-chemistry hydride generator according to claim 1 is characterized in that negative electrode is a kind of platinum or plumbous metal sheet.
6. Binode electro-chemistry hydride generator according to claim 1 is characterized in that assay determination sample component test set is Atomic Fluorescence Spectroscopy (AFS), Atomic Absorption Spectroscopy AAS or plasma emission spectrometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101571289A CN100558941C (en) | 2007-12-03 | 2007-12-03 | Binode electro-chemistry hydride generator |
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| CNB2007101571289A CN100558941C (en) | 2007-12-03 | 2007-12-03 | Binode electro-chemistry hydride generator |
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| Publication Number | Publication Date |
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| CN101250708A CN101250708A (en) | 2008-08-27 |
| CN100558941C true CN100558941C (en) | 2009-11-11 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103526225B (en) * | 2013-10-10 | 2017-01-18 | 武汉远大弘元股份有限公司 | Double-layer meshy negative electrode electrolytic bath |
| CN103526226A (en) * | 2013-10-28 | 2014-01-22 | 武汉远大弘元股份有限公司 | Novel electrolytic tank |
| CN104237449B (en) * | 2014-08-21 | 2016-06-08 | 浙江大学 | Brium carbonate electrodissolution device |
| WO2018212007A1 (en) * | 2017-05-19 | 2018-11-22 | 昭和電工株式会社 | Method for electrochemically producing germane |
| JP7030114B2 (en) * | 2017-05-19 | 2022-03-04 | 昭和電工株式会社 | How to electrochemically produce Germanic |
| WO2018212006A1 (en) * | 2017-05-19 | 2018-11-22 | 昭和電工株式会社 | Method for electrochemically producing germane |
| CN108760435A (en) * | 2018-07-18 | 2018-11-06 | 天津师范大学 | A kind of electrochemical appliance and purposes being used for preparing element hydride |
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2007
- 2007-12-03 CN CNB2007101571289A patent/CN100558941C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 氢化物发生技术-氢化物发生器. 孟君等.百色学院学报，第20卷第3期. 2007 |
| 氢化物发生技术-氢化物发生器. 孟君等.百色学院学报，第20卷第3期. 2007 * |
| 电化学氢化物发生原子荧光法同时测定砷和锑. 淦五二等.分析化学，第33卷第5期. 2005 |
| 电化学氢化物发生原子荧光法同时测定砷和锑. 淦五二等.分析化学，第33卷第5期. 2005 * |
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