CN102830152B - Method and device for controlling mercury drop of static mercury electrode - Google Patents
Method and device for controlling mercury drop of static mercury electrode Download PDFInfo
- Publication number
- CN102830152B CN102830152B CN201210323196.9A CN201210323196A CN102830152B CN 102830152 B CN102830152 B CN 102830152B CN 201210323196 A CN201210323196 A CN 201210323196A CN 102830152 B CN102830152 B CN 102830152B
- Authority
- CN
- China
- Prior art keywords
- mercury
- container
- syringe pump
- capillaceous
- drips
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Reciprocating Pumps (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a device for controlling the mercury drop of a static mercury electrode used by polarographic analysis equipment for electrochemical detection. The device comprises a mercury storage container and a capillary tube arranged at the bottom of the mercury storage container. The device is characterized in that: the mercury storage container is a cylindrical container with a cone-shaped inner top surface and a cone-shaped inner bottom surface, the top end of the cone-shaped top surface is provided with a liquid inlet, the liquid inlet is provided with a water storage tank with an electromagnetic valve, the bottommost part of the cone-shaped bottom surface is provided with a mercury outlet and a platinum wire leading-out electrode, the mercury outlet is connected with the capillary tube, the upper part of the side wall of the mercury storage container is provided with an injection pump, the inner bottom layer of the mercury storage container is provided with a mercury liquid layer, and the upper part is provided with a deionized water liquid layer. The injection pump is used for promoting the formation of the mercury drop, the volume of the mercury drop can be set randomly, the mercury drop can be formed at uniform speed without being shaken or changed in pressure difference, and the reliability of the static mercury electrode is improved. The device has the advantages of simple structure, high reliability and accurate measurement.
Description
Technical field
The present invention relates to the ruhende electrode using in polarographic analysis equipment in Electrochemical Detection.
Background technology
Clinical examination trace element project, mainly contain two kinds of technology, respectively atomic absorption method and electrochemical method, the ruhende electrode of using in electrochemical detection method mostly is dropping-mercury electrode or controls mercury and drip the volume of formation by changing time that solenoid valve opens, the mercury that dropping-mercury electrode expends is too many, substantially do not re-use, it is to flow downward along kapillary by the deadweight of mercury that mercury drips formation, in order to ensure that mercury drips smooth formation, mercury cup need have enough height to capillary end, to produce enough pressure, increase length capillaceous, internal diameter capillaceous is very little, the moment of opening at solenoid valve, form vibrations and moment negative pressure can drive the mercury column moment fast reciprocating of kapillary inside to move, because kapillary is very long, be very easy to occur air block, mercury column is divided into discontinuous mercury section, have a strong impact on the reliability of ruhende electrode, simultaneously, the volume that each formation mercury drips is also difficult to ensure homogeneity.
Summary of the invention
In order to overcome the existing ruhende electrode of controlling mercury and drip the volume of formation by changing time that solenoid valve opens, the moment of opening at solenoid valve, form vibrations and moment negative pressure can drive the mercury column moment fast reciprocating of kapillary inside to move, the volume that each formation mercury drips is also difficult to ensure the deficiency of homogeneity, the invention provides method and device that a kind of ruhende electrode control mercury drips, this device promotes mercury with syringe pump and drips formation, the volume that mercury drips can arrange arbitrarily, mercury drips average rate and forms, friction, change without pressure reduction, improved the reliability of electrode.
The technical solution adopted for the present invention to solve the technical problems is: the device that a kind of ruhende electrode control mercury drips, comprise storage mercury container and the kapillary that is arranged on its bottom, it is characterized in that: described storage mercury container is the cylindrical container that upper top and the inside surface of going to the bottom are taper surface, upper top taper surface top end is provided with inlet, water tank with solenoid valve is housed on inlet, the taper surface lowest part of going to the bottom be provided with connect capillaceous go out mercury mouth, and platinum filament extraction electrode is housed, storage mercury container side wall upper part is equipped with syringe pump, storage mercury container inner bottom part is mercury solution layer, top is deionized water liquid layer.
Described kapillary is arranged on storage mercury container bottom by adapter sleeve, and kapillary is gluing to be connected in adapter sleeve, and adapter sleeve is threaded with storage mercury container.
Described syringe pump is push-down syringe pump, and its push rod is connected with stepping motor control apparatus.
Described solenoid valve is normally closed solenoid valve.
Between described adapter sleeve top and storage mercury container, be provided with O-ring seal.
Using method of the present invention is: will add mercury Jiao Gai and be enclosed within below capillaceous, to seal lower outlet capillaceous, open solenoid valve, in water tank, add quantitative mercury solution, the quantitative deionized water of annotating again, syringe pump is stepped back and is moved to range place, shut electromagnetic valve, to add mercury Jiao Gai takes off, the push rod of syringe pump promotes forward deionized water under the control of stepper motor, the pressure producing will make the mercury solution in kapillary move down, finally forming in lower port capillaceous the mercury hanging drips, because the shrinkage factor of water is very little, and mercury solution layer is very little to the distance of lower end capillaceous, density and difference in height generation pressure by mercury can be very not large yet, work as closed electromagnetic valve, in container, there is no air, syringe pump stops, under the enough little state of internal diameter capillaceous, mercury solution can stop in kapillary still, the mercury that lower port formation capillaceous is hung drips also and remains static, become the ruhende electrode needing.In the time that the stroke of syringe pump is finished, to add mercury Jiao Gai and be enclosed within below capillaceous, to seal lower outlet capillaceous, open solenoid valve, supplement quantitative deionized water to water tank, syringe pump moves to range place, shut electromagnetic valve, will add mercury Jiao Gai and take off, and just can continue to use, drip demand according to mercury, capacity that can appropriate change syringe pump.
The invention has the beneficial effects as follows that promoting mercury with syringe pump drips formation, the volume that mercury drips can arrange arbitrarily, and mercury drips average rate and forms, and friction changes without pressure reduction, has improved the reliability of electrode.It is simple that the present invention has device structure, and reliability is high, measures advantage accurately.
Brief description of the drawings
Fig. 1 is structural representation of the present invention,
In figure, 1. water tank, 2. solenoid valve, 3. storage mercury container, 4. deionized water liquid layer, 5. mercury solution layer, 6. platinum filament extraction electrode, 7. O-ring seal, 8. goes out mercury mouth, 9. adapter sleeve, 10. kapillary, 11. syringe pumps, 12. add mercury Jiao Gai.
Embodiment
The specific embodiment of the present invention is, as shown in the figure:
Embodiment 1, the device that a kind of ruhende electrode control mercury drips, comprises storage mercury container 3 and the kapillary 10 that is arranged on its bottom, and kapillary is arranged on storage mercury container bottom by adapter sleeve 9, and kapillary is gluing to be connected in adapter sleeve, and adapter sleeve is threaded with storage mercury container.Between described adapter sleeve top and storage mercury container, be provided with O-ring seal 7.Described storage mercury container is the cylindrical container that upper top and the inside surface of going to the bottom are taper surface, upper top taper surface top end is provided with inlet, water tank 1 with solenoid valve 2 is housed on inlet, the taper surface lowest part of going to the bottom be provided with connect capillaceous go out mercury mouth 8 platinum filament extraction electrode is housed, storage mercury container side wall upper part is equipped with syringe pump 11, and storage mercury container inner bottom part is that mercury solution layer 5, top are deionized water liquid layer 4.
Described syringe pump is push-down syringe pump, and its push rod is connected with stepping motor control apparatus.Described solenoid valve is normally closed solenoid valve.
Using method of the present invention is: will add mercury glue lid 12 and be enclosed within the below of kapillary 10, with the lower outlet of sealing kapillary 10, open solenoid valve 2, in water tank 1, add quantitative mercury solution, the quantitative deionized water of annotating again, syringe pump 11 is stepped back and is moved to range place, shut electromagnetic valve 2, to add mercury glue lid 12 takes off, the push rod of syringe pump 11 promotes forward deionized water under the control of stepper motor, the pressure producing will make the mercury solution in kapillary 10 move down, finally forming in the lower port of kapillary 10 mercury hanging drips, because the shrinkage factor of water is very little, and mercury solution layer 5 is very little to the distance of the lower end of kapillary 10, density and difference in height generation pressure by mercury can be very not large yet, when solenoid valve 2 cuts out, in container 3, there is no air, syringe pump stops, under the enough little state of internal diameter capillaceous, mercury solution can stop in kapillary still, the mercury that lower port formation capillaceous is hung drips also and remains static, become the ruhende electrode needing.In the time that the stroke of syringe pump 11 is finished, to add mercury glue lid 12 and be enclosed within the below of kapillary 10, with the lower outlet of sealing kapillary 10, open solenoid valve 2, supplement quantitative deionized water to water tank 1, syringe pump 11 is stepped back and is moved to range place, shut electromagnetic valve 2, will add mercury glue lid 12 and take off, and just can continue to use, drip demand according to mercury, capacity that can appropriate change syringe pump.
Claims (6)
1. the device that ruhende electrode control mercury drips, comprise storage mercury container and the kapillary that is arranged on its bottom, it is characterized in that: described storage mercury container is the cylindrical container that upper top and the inside surface of going to the bottom are taper surface, upper top taper surface top end is provided with inlet, water tank with solenoid valve is housed on inlet, the taper surface lowest part of going to the bottom be provided with connect capillaceous go out mercury mouth platinum filament extraction electrode is housed, storage mercury container side wall upper part is equipped with syringe pump, and storage mercury container inner bottom part is that mercury solution layer, top are deionized water liquid layer.
2. the device that a kind of ruhende electrode control mercury according to claim 1 drips, is characterized in that: described kapillary is arranged on storage mercury container bottom by adapter sleeve, and kapillary is gluing to be connected in adapter sleeve, and adapter sleeve is threaded with storage mercury container.
3. the device that a kind of ruhende electrode control mercury according to claim 1 drips, is characterized in that: described syringe pump is push-down syringe pump, and its push rod is connected with stepping motor control apparatus.
4. the device that a kind of ruhende electrode control mercury according to claim 1 drips, is characterized in that: described solenoid valve is normally closed solenoid valve.
5. the device that a kind of ruhende electrode control mercury according to claim 2 drips, is characterized in that: between described adapter sleeve top and storage mercury container, be provided with O-ring seal.
6. the using method of the device that a kind of ruhende electrode control mercury claimed in claim 1 drips, it is characterized in that: will add mercury Jiao Gai and be enclosed within below capillaceous, to seal lower outlet capillaceous, open solenoid valve, in water tank, add quantitative mercury solution, the quantitative deionized water of annotating again, syringe pump is stepped back and is moved to range place, shut electromagnetic valve, to add mercury Jiao Gai takes off, the push rod of syringe pump promotes forward deionized water under the control of stepper motor, the pressure producing will make the mercury solution in kapillary move down, finally forming in lower port capillaceous the mercury hanging drips, because the shrinkage factor of water is very little, and mercury solution layer is very little to the distance of lower end capillaceous, density and difference in height generation pressure by mercury can be very not large yet, work as closed electromagnetic valve, in container, there is no air, syringe pump stops, under the enough little state of internal diameter capillaceous, mercury solution can stop in kapillary still, the mercury that lower port formation capillaceous is hung drips also and remains static, become the ruhende electrode needing, in the time that the stroke of syringe pump is finished, to add mercury Jiao Gai and be enclosed within below capillaceous, to seal lower outlet capillaceous, open solenoid valve, supplement quantitative deionized water to water tank, syringe pump moves to range place, shut electromagnetic valve, will add mercury Jiao Gai and take off, and just can continue to use, drip demand according to mercury, capacity that can appropriate change syringe pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323196.9A CN102830152B (en) | 2012-09-04 | 2012-09-04 | Method and device for controlling mercury drop of static mercury electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323196.9A CN102830152B (en) | 2012-09-04 | 2012-09-04 | Method and device for controlling mercury drop of static mercury electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102830152A CN102830152A (en) | 2012-12-19 |
| CN102830152B true CN102830152B (en) | 2014-06-04 |
Family
ID=47333362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210323196.9A Expired - Fee Related CN102830152B (en) | 2012-09-04 | 2012-09-04 | Method and device for controlling mercury drop of static mercury electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102830152B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414605B (en) * | 2018-04-12 | 2019-06-21 | 中南大学 | A kind of drop mercury period control method and system for dropping-mercury electrode in polarography |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4260467A (en) * | 1978-01-26 | 1981-04-07 | Princeton Applied Research Corporation | Static drop mercury electrode |
| IL122374A0 (en) * | 1997-12-01 | 1998-06-15 | Verdeco Technologies Ltd | Improved voltammetric apparatus with mercury recycling device |
| CN2553380Y (en) * | 2002-07-22 | 2003-05-28 | 许一楠 | Static mercury electrod sealing structure |
| CN2599576Y (en) * | 2003-02-20 | 2004-01-14 | 山东电讯七厂 | Static mercury electrode |
| CN101923067B (en) * | 2010-04-15 | 2014-03-12 | 许建民 | Polarographic flow-through cell |
| CN202770806U (en) * | 2012-09-04 | 2013-03-06 | 济南美医林电子仪器有限公司 | Device of statec mercury drop electrode for controlling mercury drops |
-
2012
- 2012-09-04 CN CN201210323196.9A patent/CN102830152B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102830152A (en) | 2012-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201173881Y (en) | Transformer standard oil sample concoction device | |
| CN202770806U (en) | Device of statec mercury drop electrode for controlling mercury drops | |
| CN108080046A (en) | Drop formation apparatus and method | |
| CN102830152B (en) | Method and device for controlling mercury drop of static mercury electrode | |
| CN201242454Y (en) | Apparatus for metering transmit-receive oil | |
| CN202139034U (en) | Cooling fluid injection device for electric car | |
| CN205709809U (en) | A kind of pesticide producing filling apparatus | |
| RU123516U1 (en) | DEVICE FOR FORMING ONE-SIZED DROPS OF LIQUID OR GAS BUBBLES | |
| CN104089754A (en) | Method and device for capturing bubble polymerization process | |
| CN206440585U (en) | Single core permeability test device of simulated field conditions | |
| CN201264897Y (en) | Fluid filling machine | |
| CN211425741U (en) | Fast mixed phase pressure measuring device | |
| CN105552299A (en) | Liquid injection machine and liquid injection units thereof | |
| CN115144316A (en) | High-temperature high-pressure infiltration and suction device | |
| CN210141245U (en) | Vacuumizing oil filling device | |
| CN204594514U (en) | Laser micrometeor gauge | |
| CN201174053Y (en) | Liquid level metering control regulator | |
| CN104132834B (en) | A kind of double-function full automatic cell settlement pelleter and flaking method thereof | |
| CN207899470U (en) | Drop formation device | |
| CN208751915U (en) | A kind of double-U-shaped scale siphon pipe | |
| CN203333269U (en) | Diagnostic reagent subpackaging device | |
| CN204694523U (en) | A kind of cadmium pole reduction device | |
| CN201942504U (en) | Filling valve of full-automatic electronic quantitative filling machine | |
| CN204832105U (en) | Device that ruhende electrode control mercury drips | |
| CN203490148U (en) | Portable density measurement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Changqing District of Ji'nan City, Shandong province 250307 guyuanhu Danfeng Street office area one floor of a unit Room 201 Applicant after: Shandong Meiyilin Electronic Instrument Co., Ltd. Address before: Changqing District of Ji'nan City, Shandong province 250307 guyuanhu Street office, First Street West Applicant before: Jinan Meiyilin Electronic Instrunment Co.,Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: JINAN MEIYILIN ELECTRONIC INSTRUNMENT CO., LTD. TO: SHANDONG MEIYILIN ELECTRONIC INSTRUMENT CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20200904 |