CN102539496A - Embedded type magnetic stirring device - Google Patents
Embedded type magnetic stirring device Download PDFInfo
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- CN102539496A CN102539496A CN2012100280588A CN201210028058A CN102539496A CN 102539496 A CN102539496 A CN 102539496A CN 2012100280588 A CN2012100280588 A CN 2012100280588A CN 201210028058 A CN201210028058 A CN 201210028058A CN 102539496 A CN102539496 A CN 102539496A
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- body base
- device body
- electrolytic cell
- fixed
- controllable motor
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Abstract
An embedded type magnetic stirring device relates to a stirring device, which aims at solving the problem that a relative position of an existing stirring device is easy to change, reappearance performance is poor, and stirring is not sufficient. The device comprises a device body base, an electrolytic cell and a fixed cup cover. A square connector is arranged on the inner side of the upper portion of the device body base, the electrolytic cell is fixed at the upper portion of the device body base, and the fixed cup cover is covered on the electrolytic cell and is fixed with the device body base through the square connector. The device further comprises a miniature controllable motor, a magnetic stir bar and a permanent magnet. The miniature controllable motor is embedded in a circular groove at the bottom of the device body base, the magnetic stir bar is movably arranged at the bottom of the electrolytic cell, and the permanent magnet is fixed on the miniature controllable motor. By means of reasonable structural design, the embedded type magnetic stirring device eliminates the influence of relative positions on test results, enables the test results to have reliability and reproducibility, an embedded type magnetic stirring method facilitates sufficient stirring, and the step of cleaning the magnetic stir bar is omitted.
Description
Technical field
The present invention relates to a kind of stirring apparatus, relate in particular to a kind of embedded magnetic stirring apparatus.
Background technology
Data determination at the chemical kinetics aspect of performance much all need stir and speed-controlling device; Particularly for the anode leaching detects heavy metal ion; Stirring and the rational Application of control speed can improve the sensitivity of detection, all is very important for the quantitative test of trace heavy metal at aspects such as medicine, food, clinical and environment measurings.The present invention is designing a kind of embedded magnetic stirring apparatus under the background like this.The device that is used to stir and detect in the existing laboratory generally is to be built roughly by electrolysis cup, magnetic stirring apparatus and worktable etc.; Relative position is easy to change between the each several part of this device; The volume of magnetic stirring apparatus is comparatively huge; Separate with electrolytic cell pond body, be difficult to guarantee that each experiment condition is all consistent, and then influence the reliability and the reproducibility of experimental result.In addition; The alr mode of existing pick-up unit all is to adopt the mode that stirs that goes up; Be about to stirring rod and working electrode, contrast electrode, electrode is inserted in the electrolytic cell jointly, this alr mode one is to be unfavorable for abundant stirring, the 2nd, and after finishing, each experiment all to clean stirring rod.Therefore, develop a kind of miniaturization and integrated in one to be used for the stirring apparatus that heavy metal ion detects imperative.
Summary of the invention
For the stirring apparatus relative position that solves prior art is easy to change, reproducibility is poor, stir inadequate problem, the invention provides a kind of embedded magnetic stirring apparatus.
A kind of embedded magnetic stirring apparatus; Comprise device body base, electrolytic cell and fixed cup cover; The upper inner of device body base has square interface, and electrolytic cell is fixed on the top of device body base, and the fixed cup cover covers electrolytic cell and fixes through square interface and device body base; This device also comprises miniature controllable motor, magnetic agitation and permanent magnet; Miniature controllable motor is embedded in the circular groove of device body base bottom, and the magnetic agitation subactivity is placed on the electrolytic cell bottom, and permanent magnet is fixed on the miniature controllable motor.
Principle of work of the present invention: during experiment, with working electrode, contrast electrode and electrode inserted working electrode jack, reference electrode reference electrode plug respectively and in the electrode jack; Each electrode is connected with electrochemical workstation respectively with miniature controllable motor; Adopt the differential pulse stripping voltammetry, scanning current potential (setting value) is set, comprise current potential increment, amplitude and pulse width; Add the heavy metal ion solution that contains to be detected by injection port again; Move electrochemical workstation immediately and begin scanning, this moment, miniature controllable motor was controlled magnetic agitation through permanent magnet, and agitating function is accomplished in permanent magnet and the cooperation of magnetic agitation; Come the electrochemical response of analysis heavy metal ion through the experiment effect figure that obtains, and then the content of heavy metal ion is done further measurement and analysis.
Beneficial effect of the present invention: a kind of embedded magnetic stirring apparatus of the present invention has guaranteed that the relative position of miniature controllable motor, magnetic agitation and electrolytic cell remains unchanged; The magnetic agitation sub-volumes is less; Eliminated the influence of relative position to experimental result; Guaranteed that each experiment condition is all consistent, made experimental result have good reliability and reproducibility.The embedded magnetic agitation mode that is adopted; Be that miniature controllable motor is embedded in the circular groove of device body base bottom; Miniature controllable motor is controlled magnetic agitation through permanent magnet; Agitating function is accomplished in permanent magnet and the cooperation of magnetic agitation, and this Embedded alr mode more helps sufficient stirring, has saved the step of cleaning magnetic agitation.
Description of drawings
Fig. 1 is the structural representation of a kind of embedded magnetic stirring apparatus of the present invention;
Fig. 2 is a kind of embedded magnetic stirring apparatus figure of the present invention;
Fig. 3 is that embodiment 1 is for heavy metal ion Pb
2+And Cd
2+The reproducible examination design sketch of measuring;
Fig. 4 is the Pb of 20ppb for measuring concentration in the test of embodiment 2 agitating functions
2+And Cd
2+The test design sketch;
Fig. 5 is the Pb of 40ppb for measuring concentration in the test of embodiment 2 agitating functions
2+And Cd
2+The test design sketch;
Fig. 6 is embodiment 3 heavy metal ion Pb
2+And Cd
2+Electrochemical gaging in Pb
2+And Cd
2+Stripping volt-ampere curve figure;
Fig. 7 is embodiment 3 heavy metal ion Pb
2+And Cd
2+Electrochemical gaging in Pb
2+And Cd
2+The linear relationship chart of stripping volt-ampere response.
Among the figure: 1, device body base, 2, miniature controllable motor, 3, magnetic agitation, 4, electrolytic cell, 5, the fixed cup cover, 6, square interface, 7, the working electrode jack, 8, reference electrode reference electrode plug, 9, to electrode jack, 10, injection port, 11, permanent magnet.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explain.
As shown in Figure 1; A kind of embedded magnetic stirring apparatus of the present invention comprises device body base 1, electrolytic cell 4 and fixed cup cover 5, and the upper inner of device body base 1 has square interface 6; Electrolytic cell 4 is fixed on the top of device body base 1; Fixed cup cover 5 covers electrolytic cell 4 and fixing with device body base 1 through square interface 6, and this device also comprises miniature controllable motor 2, magnetic agitation sub 3 and permanent magnet 11, and miniature controllable motor 2 is embedded in the circular groove of device body base 1 bottom; 3 activities of magnetic agitation are placed on electrolytic cell 4 bottoms, and permanent magnet 11 is fixed on the miniature controllable motor 2.
The top of the described fixed cup cover 5 of this embodiment has working electrode jack 7, reference electrode reference electrode plug 8, to electrode jack 9 and injection port 10, described working electrode jack 7, reference electrode reference electrode plug 8, arrange to the size of electrode jack 9 and injection port 10 and in the position on fixed cup cover 5 tops and not do any requirement; Described miniature controllable motor 2 is connected with electrochemical workstation; Described working electrode jack 7, reference electrode reference electrode plug 8 and each electrode that inserts in the electrode jack 9 is connected with electrochemical workstation respectively.
Embodiment 1 adopts embedded magnetic stirring apparatus of the present invention for heavy metal ion Pb
2+And Cd
2+The reappearance examination of measuring
The end liquid that electrolytic cell holds is the sodium acetate of 0.1M and the buffer solution of acetic acid (pH=4), and test substance is for containing Pb
2+And Cd
2+Solution, concentration is 20ppb, working electrode is the glass-carbon electrode of original position plating bismuth, contrast electrode is silver/silver chloride, is platinum electrode to electrode.Adopt the differential pulse stripping voltammetry; The current potential increment is 0.005V, and amplitude is 0.08V, and pulse width is 0.01s; At stirring condition deposit 120s; Experiment repeats twice, after test is accomplished each time under+0.3V current potential cleaning electrode 30s, the reappearance of twice experimental measurements is contrasted.Can be known that by Fig. 3 the result of twice measurement is identical basically, experiment shows that the present invention has good reproducibility.
The test of embodiment 2 embedded magnetic stirring apparatus agitating functions of the present invention
The end liquid that electrolytic cell holds is the sodium acetate of 0.1M and the buffer solution of acetic acid (pH=4), and test substance is for containing Pb
2+And Cd
2+Solution, working electrode is the glass-carbon electrode of original position plating bismuth, contrast electrode is silver/silver chloride, is platinum electrode to electrode.Adopt the differential pulse stripping voltammetry; The current potential increment is 0.005V; Amplitude is 0.08V, and pulse width is 0.01s, is stirring and is not depositing 120s respectively under the stirring condition; After test is accomplished each time under+0.3V current potential cleaning electrode 30s, investigated do not stir and stirring condition under heavy metal ion Pb
2+And Cd
2+Stripping volt-ampere response.By Fig. 4 (Pb
2+And Cd
2+Concentration be 20ppb) and Fig. 5 (Pb
2+And Cd
2+Concentration be 40ppb) can know the heavy metal ion Pb under the stirring condition
2+And Cd
2+Stripping volt-ampere response ratio not under the stirring condition obviously; Experiment shows that miniature controllable motor is controlled magnetic agitation through permanent magnet, and agitating function is accomplished in permanent magnet and the cooperation of magnetic agitation; This Embedded alr mode; Be that miniature controllable motor is embedded in the circular groove of device body base bottom, more help sufficient stirring, help to realize heavy metal ion Pb
2+And Cd
2+Sensitive Detection.
Embodiment 3 adopts embedded magnetic stirring apparatus of the present invention for heavy metal ion Pb
2+And Cd
2+Electrochemical gaging
The end liquid that electrolytic cell holds is the sodium acetate of 0.1M and the buffer solution of acetic acid (pH=4), and test substance is Pb
2+And Cd
2+, working electrode is the glass-carbon electrode of original position plating bismuth, contrast electrode is silver/silver chloride, is platinum electrode to electrode.Adopt the differential pulse stripping voltammetry, the current potential increment is 0.005V, and amplitude is 0.08V; Pulse width is 0.01s; Test concentrations is 5ppb, 10ppb, 20ppb, 40ppb, 60ppb, 80ppb and 100ppb, at stirring condition deposit 120s, after test is accomplished each time under+0.3V current potential cleaning electrode 30s; Continue the test of next concentration, investigated heavy metal ion Pb under the variable concentrations
2+And Cd
2+Stripping volt-ampere response.Can know by Fig. 6 and Fig. 7, in the 5-100ppb concentration range, heavy metal ion Pb
2+And Cd
2+Concentration and electric current demonstrate good linear relationship, experiment shows, the present invention is detecting heavy metal ion Pb
2+And Cd
2+The aspect has reliability preferably.
Claims (2)
1. embedded magnetic stirring apparatus; Comprise device body base (1), electrolytic cell (4) and fixed cup cover (5), the upper inner of device body base (1) has square interface (6), and electrolytic cell (4) is fixed on the top of device body base (1); Fixed cup cover (5) covers electrolytic cell (4) and fixing through square interface (6) and device body base (1); It is characterized in that also comprise miniature controllable motor (2), magnetic agitation (3) and permanent magnet (11), miniature controllable motor (2) is embedded in the circular groove of device body base (1) bottom; (3) activity of magnetic agitation is placed on electrolytic cell (4) bottom, and permanent magnet (11) is fixed on the miniature controllable motor (2).
2. a kind of embedded magnetic stirring apparatus according to claim 1 is characterized in that, the top of described fixed cup cover (5) has working electrode jack (7), reference electrode reference electrode plug (8), to electrode jack (9) and injection port (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100280588A CN102539496B (en) | 2012-02-09 | 2012-02-09 | Embedded type magnetic stirring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100280588A CN102539496B (en) | 2012-02-09 | 2012-02-09 | Embedded type magnetic stirring device |
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| Publication Number | Publication Date |
|---|---|
| CN102539496A true CN102539496A (en) | 2012-07-04 |
| CN102539496B CN102539496B (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100280588A Expired - Fee Related CN102539496B (en) | 2012-02-09 | 2012-02-09 | Embedded type magnetic stirring device |
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| Country | Link |
|---|---|
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992018857A1 (en) * | 1991-04-09 | 1992-10-29 | New Mexico State University Technology Transfer Corporation | Method and apparatus for batch injection analysis and trace metal testing |
| JP2000111521A (en) * | 1998-10-07 | 2000-04-21 | Central Kagaku Kk | Electrolytic cell for coulometric titration-type ammoniacal nitrogen meter |
| JP2005076116A (en) * | 2003-09-03 | 2005-03-24 | Hokuto Denko Kk | Bulk electrolysis cell, electrochemical synthesis method, and electrochemical analysis method |
| CN201438182U (en) * | 2009-04-21 | 2010-04-14 | 华北电力科学研究院有限责任公司 | Electrochemical electrolytic bath |
| CN201477067U (en) * | 2009-08-31 | 2010-05-19 | 宇星科技发展(深圳)有限公司 | Electrolytic cell device used for COD on-line monitoring |
| CN201681061U (en) * | 2010-05-28 | 2010-12-22 | 深圳市朗石生物仪器有限公司 | Integral electrolytic cell |
| CN201844996U (en) * | 2010-09-14 | 2011-05-25 | 东南大学 | Electrochemical electrolytic cell with mixing function |
| CN201852811U (en) * | 2010-11-30 | 2011-06-01 | 湖南三德科技发展有限公司 | Electrolytic cell component used for element analysis instrument |
| CN201926641U (en) * | 2010-12-17 | 2011-08-10 | 江苏江分电分析仪器有限公司 | Electrolytic cell device for testing heavy metal |
-
2012
- 2012-02-09 CN CN2012100280588A patent/CN102539496B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992018857A1 (en) * | 1991-04-09 | 1992-10-29 | New Mexico State University Technology Transfer Corporation | Method and apparatus for batch injection analysis and trace metal testing |
| JP2000111521A (en) * | 1998-10-07 | 2000-04-21 | Central Kagaku Kk | Electrolytic cell for coulometric titration-type ammoniacal nitrogen meter |
| JP2005076116A (en) * | 2003-09-03 | 2005-03-24 | Hokuto Denko Kk | Bulk electrolysis cell, electrochemical synthesis method, and electrochemical analysis method |
| CN201438182U (en) * | 2009-04-21 | 2010-04-14 | 华北电力科学研究院有限责任公司 | Electrochemical electrolytic bath |
| CN201477067U (en) * | 2009-08-31 | 2010-05-19 | 宇星科技发展(深圳)有限公司 | Electrolytic cell device used for COD on-line monitoring |
| CN201681061U (en) * | 2010-05-28 | 2010-12-22 | 深圳市朗石生物仪器有限公司 | Integral electrolytic cell |
| CN201844996U (en) * | 2010-09-14 | 2011-05-25 | 东南大学 | Electrochemical electrolytic cell with mixing function |
| CN201852811U (en) * | 2010-11-30 | 2011-06-01 | 湖南三德科技发展有限公司 | Electrolytic cell component used for element analysis instrument |
| CN201926641U (en) * | 2010-12-17 | 2011-08-10 | 江苏江分电分析仪器有限公司 | Electrolytic cell device for testing heavy metal |
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| CN102539496B (en) | 2013-11-27 |
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