CN105388204A - Heavy metal detection system adopting novel stripping voltammetry - Google Patents
Heavy metal detection system adopting novel stripping voltammetry Download PDFInfo
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- CN105388204A CN105388204A CN201510987925.4A CN201510987925A CN105388204A CN 105388204 A CN105388204 A CN 105388204A CN 201510987925 A CN201510987925 A CN 201510987925A CN 105388204 A CN105388204 A CN 105388204A
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- heavy metal
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- microcontroller
- detection system
- metal detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/48—Systems using polarography, i.e. measuring changes in current under a slowly-varying voltage
Abstract
The invention provides a heavy metal detection system adopting novel stripping voltammetry. The heavy metal detection system comprises an electrolytic tank, a stirring controller, a microcontroller, a working electrode, a reference electrode, an auxiliary electrode, a constant potential rectifier and an upper computer; a detection port of the constant potential rectifier is connected with the working electrode, the reference electrode and the auxiliary electrode; the microcontroller converts a digital signal into a voltage signal through a D/A converter for controlling the constant potential rectifier to work, and the constant potential rectifier converts the voltage signal into a digital signal through an A/D converter so as to transmit the digital signal into the microcontroller; the microcontroller is connected with the upper computer. The concentration of heavy metal in a solution is measured through the stripping voltammetry and converted into the voltage signal; the A/D converter converts the voltage signal into the digital signal and then transmits the digital signal to the microcontroller; the microcontroller transmits data to the upper computer for analysis and processing to achieve remote monitoring. The heavy metal detection system is simple in structure, reliable in operation, convenient to adjust, sensitive in reaction and long in service life.
Description
Technical field
The invention belongs to heavy metal analysis field, especially relates to the heavy metal detection system of novel stripping voltammetry.
Background technology
Heavy metal pollution has become the key factor affecting person health, the heavy metals such as lead, cadmium, mercury, arsenic, it is the development due to industrial activity, cause the enrichment in mankind's surrounding environment, human body is entered by air, water, food etc., accumulate in some organ of human body, cause slow poisoning, be detrimental to health.
Stripping voltammetry is also known as reverse stripping polarography, this method makes tested material, the electrolysis regular hour under the current potential treating measured ion polarographic analysis generation limiting current, then the current potential of electrode is changed, make the stripping again of enrichment material on this electrode, carry out quantitative test according to the volt-ampere curve obtained in process in leaching.Therefore, utilizing stripping voltammetry heavy metal to carry out detecting also is the emphasis of Electrochemical Detection research.
Summary of the invention
In view of this, the invention is intended to the heavy metal detection system proposing novel stripping voltammetry, detects heavy metal system to realize fast and safely Electrochemical Stripping voltammetry reliably.
For achieving the above object, the technical scheme of the invention is achieved in that
The heavy metal detection system of novel stripping voltammetry, comprises electrolytic cell, mixing control device, microcontroller, working electrode, contrast electrode, auxiliary electrode, potentiostat and host computer; Described working electrode, contrast electrode, auxiliary electrical level are placed in described electrolytic cell, are connected working electrode, contrast electrode, auxiliary electrical level with the detection port of described potentiostat; Digital signal is converted into voltage signal by D/A converter and controls potentiostat work by described microcontroller, and voltage signal is converted into digital signal by A/D converter and is sent in microcontroller by described potentiostat; Micro current amplifier is provided with in described potentiostat; Described microcontroller controls stirrer work by mixing control device; Described microcontroller is connected with described host computer by serial ports.
Further, described working electrode glass-carbon electrode.
Further, the saturated Gan Gong of described contrast electrode Ag/AgC1.
Further, described auxiliary electrical level adopts platinum electrode.
Further, described microprocessor is single-chip microcomputer.
Further, described single-chip microcomputer is STC89C52.
Relative to prior art, the heavy metal detection system of the novel stripping voltammetry described in the invention has following advantage: the invention measures heavy metal concentration in solution by stripping voltammetry, and converts it into voltage signal; A/D converter is sent to microcontroller after voltage signal is changed into digital signal; Microcontroller sends data in host computer and carries out analyzing and processing, realizes remote monitoring.The invention structure is simple, reliable, easy to adjust, be quick on the draw, long service life.
Accompanying drawing explanation
The accompanying drawing of the part of formation the invention is used to provide the further understanding to the invention, and the schematic description and description of the invention, for explaining the invention, does not form the improper restriction to the invention.In the accompanying drawings:
Fig. 1 is the structural representation of the heavy metal detection system of the novel stripping voltammetry described in the invention embodiment;
Fig. 2 is the electrical block diagram of the microcontroller described in the invention embodiment.
Embodiment
It should be noted that, when not conflicting, the embodiment in the invention and the feature in embodiment can combine mutually.
In the description of the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the invention can not be interpreted as.In addition, term " first ", " second " etc. only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, one or more these features can be expressed or impliedly be comprised to the feature being limited with " first ", " second " etc.In the description of the invention, except as otherwise noted, the implication of " multiple " is two or more.
In the description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the invention can be understood by concrete condition.
Below with reference to the accompanying drawings and describe the invention in detail in conjunction with the embodiments.
As shown in Figure 1, the heavy metal detection system of novel stripping voltammetry, comprises electrolytic cell, mixing control device, microcontroller, working electrode, contrast electrode, auxiliary electrode, potentiostat and host computer; Described working electrode, contrast electrode, auxiliary electrical level are placed in described electrolytic cell, are connected working electrode, contrast electrode, auxiliary electrical level with the detection port of described potentiostat; Digital signal is converted into voltage signal by D/A converter and controls potentiostat work by described microcontroller, and voltage signal is converted into digital signal by A/D converter and is sent in microcontroller by described potentiostat; Micro current amplifier is provided with in described potentiostat; Described microcontroller controls stirrer work by mixing control device; Described microcontroller is connected with described host computer by serial ports.
Described working electrode glass-carbon electrode.
The saturated Gan Gong of described contrast electrode Ag/AgC1.
Described auxiliary electrical level adopts platinum electrode.
Described microprocessor is single-chip microcomputer, as shown in Figure 2.
Described single-chip microcomputer is STC89C52.
The course of work of the invention is as follows: stirrer is placed in electrolytic cell by the invention, getting a certain amount of solution joins in electrolytic cell, electrode is inserted in electrolytic cell, microcontroller applies voltage by potentiostat to working electrode, mixing control device controls stirrer and stirs, and potentiostat sensed current signal, transfers in microcontroller, microcontroller sends data to graphing in host computer, calculates heavy metal concentration in solution.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; within all spirit in the invention and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in the invention.
Claims (6)
1. the heavy metal detection system of novel stripping voltammetry, is characterized in that: comprise electrolytic cell, mixing control device, microcontroller, working electrode, contrast electrode, auxiliary electrode, potentiostat and host computer; Described working electrode, contrast electrode, auxiliary electrode are placed in described electrolytic cell, are connected working electrode, contrast electrode, auxiliary electrode with the detection port of described potentiostat; Digital signal is converted into voltage signal by D/A converter and controls potentiostat work by described microcontroller, and voltage signal is converted into digital signal by A/D converter and is sent in microcontroller by described potentiostat; Micro current amplifier is provided with in described potentiostat; Described microcontroller controls stirrer work by mixing control device; Described microcontroller is connected with described host computer by serial ports.
2. the heavy metal detection system of novel stripping voltammetry according to claim 1, is characterized in that: described working electrode glass-carbon electrode.
3. the heavy metal detection system of novel stripping voltammetry according to claim 1, is characterized in that: the saturated Gan Gong of described contrast electrode Ag/AgC1.
4. the heavy metal detection system of novel stripping voltammetry according to claim 1, is characterized in that: described auxiliary electrical level adopts platinum electrode.
5. the heavy metal detection system of novel stripping voltammetry according to claim 1, is characterized in that: described microprocessor is single-chip microcomputer.
6. the heavy metal detection system of novel stripping voltammetry according to claim 5, is characterized in that: described single-chip microcomputer is STC89C52.
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| CN201510987925.4A CN105388204A (en) | 2015-12-22 | 2015-12-22 | Heavy metal detection system adopting novel stripping voltammetry |
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| CN201510987925.4A CN105388204A (en) | 2015-12-22 | 2015-12-22 | Heavy metal detection system adopting novel stripping voltammetry |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483184A (en) * | 2016-10-14 | 2017-03-08 | 山东理工大学 | Heavy metal analysis device and method based on graphene sensor |
| CN106680331A (en) * | 2017-02-17 | 2017-05-17 | 东北师范大学 | Method and device for detecting impedance spectrum of easily-made drug chemicals |
| CN106706732A (en) * | 2016-12-26 | 2017-05-24 | 安徽省碧水电子技术有限公司 | Water quality detection system based on bi-polar system |
| CN106770593A (en) * | 2016-12-26 | 2017-05-31 | 安徽省碧水电子技术有限公司 | It is a kind of with purging system based on the two poles of the earth system water quality detection system |
| CN106770534A (en) * | 2016-12-26 | 2017-05-31 | 安徽省碧水电子技术有限公司 | It is a kind of with temperature sensor based on the two poles of the earth system water quality detection system |
| CN106770533A (en) * | 2016-12-26 | 2017-05-31 | 安徽省碧水电子技术有限公司 | It is a kind of with voice broadcast based on the two poles of the earth system water quality detection system |
| CN106841359A (en) * | 2016-12-26 | 2017-06-13 | 安徽省碧水电子技术有限公司 | It is a kind of with standard value contrast based on the two poles of the earth system water quality detection system |
| CN107305194A (en) * | 2016-04-21 | 2017-10-31 | 北京华科天宇环保科技有限公司 | A kind of heavy metal detector and its electrolytic cell |
| CN107543854A (en) * | 2016-06-28 | 2018-01-05 | 中国农业大学 | One heavy metal species quantitative forecasting technique, apparatus and system |
| CN107703203A (en) * | 2017-11-24 | 2018-02-16 | 海南大学 | A kind of heavy metal analysis device and its detection method |
| CN108088885A (en) * | 2017-11-10 | 2018-05-29 | 中国农业大学 | A kind of heavy metal-polluted soil electrochemical in-situ detecting system and detection method |
| CN108132283A (en) * | 2016-11-30 | 2018-06-08 | 南京理工大学 | A kind of organophosphorus pesticide detection device |
| CN108593752A (en) * | 2018-05-24 | 2018-09-28 | 栾友祥 | A kind of heavy metal water quality detection system of field of environment protection |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107305194B (en) * | 2016-04-21 | 2019-06-25 | 北京华科天宇环保科技有限公司 | A kind of heavy metal detector and its electrolytic cell |
| CN107305194A (en) * | 2016-04-21 | 2017-10-31 | 北京华科天宇环保科技有限公司 | A kind of heavy metal detector and its electrolytic cell |
| CN107543854A (en) * | 2016-06-28 | 2018-01-05 | 中国农业大学 | One heavy metal species quantitative forecasting technique, apparatus and system |
| CN106483184A (en) * | 2016-10-14 | 2017-03-08 | 山东理工大学 | Heavy metal analysis device and method based on graphene sensor |
| CN108132283A (en) * | 2016-11-30 | 2018-06-08 | 南京理工大学 | A kind of organophosphorus pesticide detection device |
| CN106841359A (en) * | 2016-12-26 | 2017-06-13 | 安徽省碧水电子技术有限公司 | It is a kind of with standard value contrast based on the two poles of the earth system water quality detection system |
| CN106770533A (en) * | 2016-12-26 | 2017-05-31 | 安徽省碧水电子技术有限公司 | It is a kind of with voice broadcast based on the two poles of the earth system water quality detection system |
| CN106770534A (en) * | 2016-12-26 | 2017-05-31 | 安徽省碧水电子技术有限公司 | It is a kind of with temperature sensor based on the two poles of the earth system water quality detection system |
| CN106770593A (en) * | 2016-12-26 | 2017-05-31 | 安徽省碧水电子技术有限公司 | It is a kind of with purging system based on the two poles of the earth system water quality detection system |
| CN106706732A (en) * | 2016-12-26 | 2017-05-24 | 安徽省碧水电子技术有限公司 | Water quality detection system based on bi-polar system |
| CN106680331A (en) * | 2017-02-17 | 2017-05-17 | 东北师范大学 | Method and device for detecting impedance spectrum of easily-made drug chemicals |
| CN108088885A (en) * | 2017-11-10 | 2018-05-29 | 中国农业大学 | A kind of heavy metal-polluted soil electrochemical in-situ detecting system and detection method |
| CN108088885B (en) * | 2017-11-10 | 2020-06-30 | 中国农业大学 | Soil heavy metal electrochemical in-situ detection system and detection method |
| CN107703203A (en) * | 2017-11-24 | 2018-02-16 | 海南大学 | A kind of heavy metal analysis device and its detection method |
| CN108593752A (en) * | 2018-05-24 | 2018-09-28 | 栾友祥 | A kind of heavy metal water quality detection system of field of environment protection |
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Application publication date: 20160309 |