CN102830152A - 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
- CN102830152A CN102830152A CN2012103231969A CN201210323196A CN102830152A CN 102830152 A CN102830152 A CN 102830152A CN 2012103231969 A CN2012103231969 A CN 2012103231969A CN 201210323196 A CN201210323196 A CN 201210323196A CN 102830152 A CN102830152 A CN 102830152A
- Authority
- CN
- China
- Prior art keywords
- mercury
- container
- syringe pump
- drips
- capillaceous
- 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.)
- Granted
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
- Reciprocating Pumps (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 that uses in the polarographic analysis equipment in the Electrochemical Detection.
Background technology
Clinical examination trace element project mainly contains two kinds of technology, is respectively atomic absorption method and electrochemical method; Mostly the ruhende electrode that uses in the electrochemical detection method is DME or controls the volume that mercury drips formation through changing the time that solenoid valve opens that the mercury that DME expends is too many, does not re-use basically; It is to lean on the deadweight of mercury to flow downward along kapillary that mercury drips formation, drips smooth formation in order to guarantee mercury, and the mercury cup need have enough height to capillary end; To produce enough pressure, increased length capillaceous, internal diameter capillaceous is very little; In the moment that solenoid valve is opened, the vibrations of formation with moment negative pressure can drive the inner mercury column moment quick reciprocating of kapillary and move, owing to kapillary is very long; Be very easy to occur air block, mercury column is divided into discontinuous mercury section, had a strong impact on the reliability of ruhende electrode; Simultaneously, form the also very difficult homogeneity that guarantees of volume that mercury drips at every turn.
Summary of the invention
Existingly control the ruhende electrode that mercury drips the volume of formation in order to overcome through changing the time that solenoid valve opens, in the moment that solenoid valve is opened, the vibrations of formation with moment the negative pressure mercury column moment quick reciprocating that can drive kapillary inside move; The volume that each formation mercury drips also is difficult to guarantee the deficiency of homogeneity; The invention provides method and device that a kind of ruhende electrode control mercury drips, this device use syringe pump promotes mercury and drips formation, and the volume that mercury drips can be provided with arbitrarily; Mercury drips equal speed and forms; Friction, no pressure reduction changes, and has 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 installed in its bottom; It is characterized in that: described storage mercury container is the cylindrical container that the last top and the inside surface of going to the bottom are taper surface; Last top taper surface top end is provided with inlet, and the water tank that has solenoid valve is housed on the inlet, and the taper surface lowest part of going to the bottom is provided with to connect and capillaceously goes out the mercury mouth and the 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 the deionized water liquid layer.
Described kapillary is installed in storage mercury container bottom through adapter sleeve, and kapillary is gluing to be connected in the adapter sleeve, and adapter sleeve is threaded with the storage mercury container.
Described syringe pump is the push-down syringe pump, and its push rod is connected with stepping motor control apparatus.
Described solenoid valve is a normally closed solenoid valve.
Be provided with O-ring seal between described adapter sleeve top and storage mercury container.
Method of application of the present invention is: will add mercury Jiao Gai and be enclosed within below capillaceous, and to seal outlet down capillaceous, open solenoid valve; In water tank, add quantitative mercury solution, the quantitative deionized water of annotating again, syringe pump are stepped back and are moved to the range place; Close solenoid valve, will add mercury Jiao Gai and take off, the push rod of syringe pump promotes deionized water forward under Stepping Motor Control; The pressure that produces will make the mercury solution in the kapillary move down, and finally forms the mercury that hangs in lower port capillaceous and drips, because the shrinkage factor of water is very little; And the mercury solution layer is very little to the distance of lower end capillaceous, can be very not big by the density and the difference in height generation pressure of mercury yet, work as closed electromagnetic valve; Do not have air in the container, syringe pump stops, under the enough little state of internal diameter capillaceous; Mercury solution can stop in the kapillary still, and the mercury of lower port formation suspension capillaceous drips also and remains static, becomes the ruhende electrode that needs.When the stroke of syringe pump uses up, will add mercury Jiao Gai and be enclosed within below capillaceous, to seal outlet down capillaceous; Open solenoid valve, replenish quantitative deionized water to water tank, syringe pump moves to the range place; Close solenoid valve, will add mercury Jiao Gai and take off, just can continue to use; Drip demand according to mercury, capacity that can the appropriate change syringe pump.
The invention has the beneficial effects as follows that using syringe pump to promote mercury drips formation, the volume that mercury drips can be provided with arbitrarily, and mercury drips equal speed and forms, friction, and no pressure reduction changes, and has improved the reliability of electrode.It is simple that the present invention has a device structure, and reliability is high, measures advantage accurately.
Description of drawings
Fig. 1 is a structural representation of the present invention,
Among the 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 the mercury mouth, 9. adapter sleeve, 10. kapillary, 11. syringe pumps, 12. add mercury Jiao Gai.
Embodiment
Embodiment of the present invention is, and is as shown in the figure:
Embodiment 1, and the device that a kind of ruhende electrode control mercury drips comprises storage mercury container 3 and the kapillary 10 that is installed in its bottom, and kapillary is installed in storage mercury container bottom through adapter sleeve 9, and kapillary is gluing to be connected in the adapter sleeve, and adapter sleeve is threaded with the storage mercury container.Be provided with O-ring seal 7 between described adapter sleeve top and storage mercury container.Described storage mercury container is the cylindrical container that the last top and the inside surface of going to the bottom are taper surface; Last top taper surface top end is provided with inlet; The water tank 1 that has solenoid valve 2 is housed on the inlet; The taper surface lowest part of going to the bottom is provided with to connect and capillaceously goes out mercury mouth 8 and the platinum filament extraction electrode is housed, and 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 the push-down syringe pump, and its push rod is connected with stepping motor control apparatus.Described solenoid valve is a normally closed solenoid valve.
Method of application of the present invention is: will add the below that mercury glue lid 12 is enclosed within kapillary 10, and with the following 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 are stepped back and are moved to the range place; Close solenoid valve 2, will add mercury glue lid 12 and take off, the push rod of syringe pump 11 promotes deionized water forward under Stepping Motor Control; The pressure that produces will make the mercury solution in the kapillary 10 move down, and the mercury that finally hangs in the lower port formation of kapillary 10 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, can be very not big by the density and the difference in height generation pressure of mercury yet, when solenoid valve 2 cuts out; Do not have air in the container 3, syringe pump stops, under the enough little state of internal diameter capillaceous; Mercury solution can stop in the kapillary still, and the mercury of lower port formation suspension capillaceous drips also and remains static, becomes the ruhende electrode that needs.When the stroke of syringe pump 11 uses up, will add the below that mercury glue lid 12 is enclosed within kapillary 10, with the following outlet of sealing kapillary 10; Open solenoid valve 2, replenish quantitative deionized water to water tank 1, syringe pump 11 is stepped back and is moved to the range place; Close solenoid valve 2, will add mercury glue lid 12 and take off, just can continue to use; Drip demand according to mercury, capacity that can the appropriate change syringe pump.
Claims (6)
1. a ruhende electrode is controlled the device that mercury drips; Comprise storage mercury container and the kapillary that is installed in its bottom; It is characterized in that: described storage mercury container is the cylindrical container that the last top and the inside surface of going to the bottom are taper surface; Last top taper surface top end is provided with inlet, and the water tank that has solenoid valve is housed on the inlet, and the taper surface lowest part of going to the bottom is provided with to connect and capillaceously goes out the mercury mouth and the 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 the deionized water liquid layer.
2. the device that a kind of ruhende electrode control mercury according to claim 1 drips, it is characterized in that: described kapillary is installed in storage mercury container bottom through adapter sleeve, and kapillary is gluing to be connected in the adapter sleeve, and adapter sleeve is threaded with the storage mercury container.
3. the device that a kind of ruhende electrode control mercury according to claim 1 drips, it is characterized in that: described syringe pump is the 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, it is characterized in that: described solenoid valve is a normally closed solenoid valve.
5. the device that a kind of ruhende electrode control mercury according to claim 2 drips is characterized in that: be provided with O-ring seal between described adapter sleeve top and storage mercury container.
6. the method for application of the device that drips of the described a kind of ruhende electrode control of claim 1 mercury is characterized in that: will add mercury Jiao Gai and be enclosed within below capillaceous, to seal outlet down 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 the range place, closes solenoid valve, will add mercury Jiao Gai and take off; The push rod of syringe pump promotes deionized water forward under Stepping Motor Control, the pressure of generation will make the mercury solution in the kapillary move down, and finally forms the mercury that hangs in lower port capillaceous and drips; Because the shrinkage factor of water is very little, and the mercury solution layer is very little to the distance of lower end capillaceous, also can be very not big by the density and the difference in height generation pressure of mercury; Work as closed electromagnetic valve, do not have air in the container, syringe pump stops; Under the enough little state of internal diameter capillaceous, mercury solution can stop in the kapillary still, and the mercury that lower port capillaceous forms suspension drips also and remains static, becomes the ruhende electrode that needs.When the stroke of syringe pump uses up, will add mercury Jiao Gai and be enclosed within below capillaceous, to seal outlet down capillaceous; Open solenoid valve, replenish quantitative deionized water to water tank, syringe pump moves to the range place; Close solenoid valve, will add mercury Jiao Gai and take off, just can continue to use; Drip demand according to mercury, capacity that can the 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 true CN102830152A (en) | 2012-12-19 |
| CN102830152B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414605A (en) * | 2018-04-12 | 2018-08-17 | 中南大学 | A kind of drop mercury period control method and system for dropping-mercury electrode in polarography |
Citations (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 |
| US6514396B1 (en) * | 1997-12-01 | 2003-02-04 | Chaim Noah Yarnitzky | Dropping mercury electrode with mercury purification and recycling by means of contact with oxygenated water |
| 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 |
| CN101923067A (en) * | 2010-04-15 | 2010-12-22 | 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
Patent Citations (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 |
| US6514396B1 (en) * | 1997-12-01 | 2003-02-04 | Chaim Noah Yarnitzky | Dropping mercury electrode with mercury purification and recycling by means of contact with oxygenated water |
| 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 |
| CN101923067A (en) * | 2010-04-15 | 2010-12-22 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414605A (en) * | 2018-04-12 | 2018-08-17 | 中南大学 | A kind of drop mercury period control method and system for dropping-mercury electrode in polarography |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102830152B (en) | 2014-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102716685B (en) | Continuous gradient mixing device and mixing method thereof | |
| CN202255950U (en) | Novel fluid sampling system with positive pressure auxiliary function | |
| CN202770806U (en) | Device of statec mercury drop electrode for controlling mercury drops | |
| CN108080046A (en) | Drop formation apparatus and method | |
| CN105013548B (en) | A kind of microfluidic chip liquid drop generating means | |
| CN102830152B (en) | Method and device for controlling mercury drop of static mercury electrode | |
| CN207823053U (en) | It can prevent the novel liquid-transfering device of leakage splash | |
| CN201242454Y (en) | Apparatus for metering transmit-receive oil | |
| CN205323802U (en) | Rubber head burette | |
| RU123516U1 (en) | DEVICE FOR FORMING ONE-SIZED DROPS OF LIQUID OR GAS BUBBLES | |
| CN202762332U (en) | Continuous gradient mixer | |
| CN104089754A (en) | Method and device for capturing bubble polymerization process | |
| CN204594514U (en) | Laser micrometeor gauge | |
| CN201264897Y (en) | Fluid filling machine | |
| CN207899470U (en) | Drop formation device | |
| CN105552299A (en) | Liquid injection machine and liquid injection units thereof | |
| CN203170352U (en) | Novel transfer pipette | |
| CN204694523U (en) | A kind of cadmium pole reduction device | |
| CN203490148U (en) | Portable density measurement device | |
| CN206392096U (en) | A kind of Novel pipette of quick and precisely transfer liquid | |
| CN204832105U (en) | Device that ruhende electrode control mercury drips | |
| CN104764500A (en) | Laser micro-flow metering instrument | |
| CN110548553A (en) | Trace liquid collecting and filling device | |
| CN201785185U (en) | Variable-diameter constant-pressure dripping funnel | |
| CN218189720U (en) | Array type micropipettor |
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 of 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 |
Granted publication date: 20140604 Termination date: 20200904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |