CN212483449U - In-situ analyzer for detecting heavy metals in water - Google Patents
In-situ analyzer for detecting heavy metals in water Download PDFInfo
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Abstract
The utility model is suitable for a water quality monitoring instrument technical field provides a detect normal position analysis appearance of quality of water heavy metal, and this normal position analysis appearance is based on differential pulse stripping voltammetry and is the detection mechanism, combines together sequential injection technique and electrochemistry technique, comprises conveying mechanism, digestion mechanism, detection mechanism, analysis mechanism and control mechanism. The in-situ analyzer does not need frequent pretreatment of electrodes, can monitor various heavy metal ions in a water body in real time, continuously and on site, and has wide application prospects in the aspects of water quality heavy metal detection, real-time monitoring and water quality disaster early warning.
Description
Technical Field
The utility model belongs to the technical field of the water quality monitoring instrument, especially, relate to a detect normal position analysis appearance of quality of water heavy metal.
Background
With the rapid development of industry, agriculture and economy, the heavy metal pollution in water bodies such as rivers, lakes, oceans and the like is gradually intensified. Heavy metals are difficult to naturally degrade in the environment, and when entering the sea or river, even if the concentration of the heavy metals is small, the heavy metals can be always enriched in animals and plants due to the fact that the heavy metals cannot be naturally degraded or absorbed, and finally the health of human beings is seriously harmed through a food chain.
The method is characterized in that the method is high in cost and low in efficiency, and because the method is not detected in time, the water sample changes in the midway and the pollution in the water sample transmission process affects the objectivity of the detection result.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a detect normal position analysis appearance of quality of water heavy metal aims at solving the problem of mentioning in the background art.
The embodiment of the utility model provides a realize like this, a detect normal position analysis appearance of quality of water heavy metal, store mechanism, analytic mechanism and control structure including reagent, the mechanism is stored to reagent has digestion liquid, washing liquid and waste liquid, normal position analysis appearance still includes:
the digestion mechanism is used for converting metal elements in the water sample to be detected into single high-valence ions or inorganic compounds through digestion liquid;
the detection mechanism is used for detecting the water sample to be detected after digestion by the digestion mechanism based on a differential pulse stripping voltammetry method and obtaining detection data; the analysis mechanism analyzes the detection data to obtain the types and the concentrations of the heavy metals in the water; the detection mechanism is connected with the analysis mechanism;
the conveying mechanism is used for conveying a water sample to be detected into the digestion mechanism; used for conveying digestion liquid into the digestion mechanism; the device is used for conveying the water sample to be detected after digestion by the digestion mechanism into the detection mechanism; the in-situ analyzer is used for conveying cleaning fluid to clean the in-situ analyzer; the reagent storage mechanism is used for conveying waste liquid into the reagent storage mechanism; the digestion mechanism, the detection mechanism and the reagent storage mechanism are communicated through the conveying mechanism.
Preferably, the conveying mechanism includes:
a sample inlet pipe;
the liquid storage device is used for temporarily storing one of digestion liquid, a digested water sample to be detected, cleaning liquid and waste liquid;
an injection pump; the injection pump is connected with the liquid reservoir;
a selector valve; the selector valve is communicated with the liquid reservoir; the selection valve is communicated with the reagent storage mechanism; the selection valve is communicated with the digestion mechanism; the selector valve is in communication with the detection mechanism.
Preferably, the conveying mechanism further comprises:
a filter; the filter is communicated with the sample inlet pipe.
Preferably, the digestion mechanism comprises:
the digestion pool is used for inputting digestion liquid to carry out digestion treatment on a water sample to be detected;
heating wires; the heating wire is wound on the outer wall of the digestion tank;
the temperature sensor is used for controlling the heating temperature and the heating time of the heating wire; the heating wire is electrically connected with the temperature sensor;
an electromagnetic valve; the electromagnetic valve is provided with two pieces; the digestion pool is communicated with the selection valve through one piece of the electromagnetic valve; the digestion pool is communicated with the filter through another piece of the electromagnetic valve.
Preferably, the detection mechanism comprises:
the electrolytic cell is used for inputting the water sample to be detected after digestion by the digestion mechanism; the electrolytic cell is communicated with the selection valve;
a stirrer; the stirrer is arranged in the electrolytic cell;
a working electrode; the working electrode is arranged in the electrolytic cell;
a reference electrode; the reference electrode is arranged in the electrolytic cell;
an auxiliary electrode; the auxiliary electrode is arranged in the electrolytic cell;
the constant potential driving module is used for controlling the potential on the working electrode; the constant potential driving module is electrically connected with the working electrode, the reference electrode and the auxiliary electrode.
Preferably, the reagent storage mechanism comprises:
a digestion liquid chamber; the digestion liquid chamber is communicated with the selection valve;
a cleaning liquid chamber; the cleaning liquid chamber is communicated with the selection valve;
a waste chamber; the waste chamber is in communication with the selector valve.
Preferably, the control mechanism includes:
a power source;
the main control module is used for controlling the operation of the in-situ analyzer; the main control module is electrically connected with the digestion mechanism; the main control module is electrically connected with the conveying mechanism; the main control module is electrically connected with the detection mechanism; the main control module is electrically connected with the analysis mechanism; the main control module is electrically connected with the linear power supply;
the switching power supply is used for converting commercial power into voltage or current required by each mechanism of the in-situ analyzer; the conveying mechanism and the digestion mechanism are electrically connected with the power supply through a switching power supply;
the linear power supply is used for providing high-precision direct-current voltage; the detection mechanism, the analysis mechanism and the main control module are electrically connected with the power supply through a linear power supply;
and the serial port communication is used for sharing the calculation and analysis results of the analysis mechanism.
Preferably, the digestion tank is made of quartz.
Preferably, the working electrode adopts a boron-doped diamond film electrode; the reference electrode adopts an Ag/AgCl electrode; the auxiliary electrode adopts a platinum electrode.
The embodiment of the utility model provides a pair of normal position analysis appearance of detection quality of water heavy metal, the utility model discloses dissolve out voltammetry for detection mechanism based on differential pulse to combine together sequence injection technique and electrochemistry technique, have that equipment is simple, with low costs, check-out time is fast, can realize advantages such as real-time, normal position, continuous monitoring. The utility model discloses a quality of water heavy metal normal position analysis appearance carries out long-term continuous monitoring in can extensively being used for waters such as rivers, lakes, ocean, to promoting china's environmental monitoring's technical merit and calamity early warning ability, promotes china's environmental monitoring business process and can play positive promotion effect.
Drawings
Fig. 1 is a schematic structural diagram of an in-situ analyzer for detecting heavy metals in water according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating steps of a method for using an in-situ analyzer for detecting heavy metals in water according to an embodiment of the present invention;
fig. 3 is a circuit control flow chart of the in-situ analyzer for detecting heavy metals in water provided by the embodiment of the utility model.
In the drawings: 1. a filter; 2. an injection pump; 3. a selector valve; 4. a reservoir; 5. a digestion pool; 6. Heating wires; 7. a temperature sensor; 8. an electromagnetic valve; 9. an electrolytic cell; 10. a stirrer; 11. a working electrode; 12. a reference electrode; 13. an auxiliary electrode; 14. a cleaning liquid chamber; 15. a digestion liquid chamber; 16. a waste chamber; 17. and (4) a sampling pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
As shown in fig. 1, for the utility model discloses an embodiment provides a detect quality of water heavy metal's normal position analysis appearance's structural schematic diagram, store mechanism, analytic mechanism and control structure including reagent, reagent storage mechanism stores digestion liquid, washing liquid and waste liquid, normal position analysis appearance still includes:
the digestion mechanism is used for converting metal elements in the water sample to be detected into single high-valence ions or inorganic compounds through digestion liquid;
the detection mechanism is used for detecting the water sample to be detected after digestion by the digestion mechanism based on a differential pulse stripping voltammetry method and obtaining detection data; the analysis mechanism analyzes the detection data to obtain the types and the concentrations of the heavy metals in the water; the detection mechanism is connected with the analysis mechanism;
the conveying mechanism is used for conveying a water sample to be detected into the digestion mechanism; used for conveying digestion liquid into the digestion mechanism; the device is used for conveying the water sample to be detected after digestion by the digestion mechanism into the detection mechanism; the in-situ analyzer is used for conveying cleaning fluid to clean the in-situ analyzer; the reagent storage mechanism is used for conveying waste liquid into the reagent storage mechanism; the digestion mechanism, the detection mechanism and the reagent storage mechanism are communicated through the conveying mechanism.
In the embodiment of the utility model, the digestion liquid can adopt potassium persulfate solution, and the cleaning liquid can adopt distilled water. The conveying mechanism conveys a water sample to be detected to enter the digestion mechanism, and then the conveying mechanism conveys digestion liquid to enter the digestion mechanism to digest the water sample to be detected; after digestion, the conveying mechanism conveys the digested water sample to be detected into the detection mechanism, and the detection mechanism detects the digested water sample to be detected based on the differential pulse stripping voltammetry to obtain detection data; the analysis mechanism analyzes the detection data to obtain the types and the concentrations of the heavy metals in the water; and after the inspection is finished, the conveying mechanism conveys the cleaning liquid to clean the in-situ analyzer, and after the cleaning is finished, the conveying mechanism conveys the cleaned waste liquid into the reagent storage mechanism.
As shown in fig. 1, as a preferred embodiment of the present invention, the conveying mechanism includes:
a sample introduction pipe 17;
the liquid storage device 4 is used for temporarily storing one of digestion liquid, a digested water sample to be detected, cleaning liquid and waste liquid;
an injection pump 2; the injection pump 2 is connected with the liquid storage device 4;
a selector valve 3; the selector valve 3 is communicated with the liquid reservoir 4; the selector valve 3 is communicated with the reagent storage mechanism; the selector valve 3 is communicated with the digestion mechanism; the selector valve 3 communicates with the detection mechanism.
Specifically, the sampling tube 17 is made of polytetrafluoroethylene material, the inner diameter of the sampling tube is 1.0mm, the outer diameter of the sampling tube is 1.6mm, and the sampling tube 17 can be directly arranged in a water source to be detected; the reservoir 4, the syringe pump 2 and the selector valve 3 cooperate to deliver the respective fluids to the respective mechanisms.
As shown in fig. 1, as a preferred embodiment of the present invention, the conveying mechanism further includes:
a filter 1; the filter 1 communicates with the sample inlet tube 17.
Specifically, the pore size of the filter 1 is 5 μm, and in the sea area with turbidity above 20NTU, a coarse filter 1 with a size of 100 μm is added before the filter 1 with pore size of 5 μm; the filter 1 is arranged after the sample inlet tube 17.
As shown in fig. 1, as a preferred embodiment of the present invention, the digestion mechanism includes:
the digestion tank 5 is used for inputting digestion liquid to carry out digestion treatment on a water sample to be detected;
a heating wire 6; the heating wire 6 is wound on the outer wall of the digestion tank 5;
a temperature sensor 7 for controlling a heating temperature and a heating time of the heating wire 6; the heating wire 6 is electrically connected with the temperature sensor 7;
an electromagnetic valve 8; the electromagnetic valve 8 is provided with two pieces; the digestion tank 5 is communicated with the selector valve 3 through one piece of the electromagnetic valve 8; the digestion tank 5 is communicated with the filter 1 through another piece of the electromagnetic valve 8.
Specifically, the temperature sensor 7 may employ a thermistor temperature sensor 7. In actual operation, the injection pump 2 extracts a water sample to be detected, then the electromagnetic valve 8 communicated with the filter 1 is opened, the water sample to be detected enters the digestion tank 5, and the electromagnetic valve 8 communicated with the filter 1 is closed. Then, the injection pump 2 pumps the digestion solution into the reservoir 4 through the selector valve 3, the electromagnetic valve 8 connected with the selector valve 3 is opened, the injection pump 2 conveys the digestion solution in the reservoir 4 into the digestion tank 5, and the electromagnetic valve 8 connected with the selector valve 3 is closed. Then, the thermistor temperature sensor 7 controls the heating wire 6 to heat the digestion tank 5, wherein the heating temperature is 120 ℃, and the time is 10 min. After the water sample to be detected which is to be digested in the digestion pool 5 is cooled, the electromagnetic valve 8 connected with the selector valve 3 is opened, the injection pump 2 extracts the water sample to be detected which is to be digested through the selector valve 3 and enters the liquid storage device 4, the electromagnetic valve 8 connected with the selector valve 3 is closed, and the injection pump 2 conveys the water sample to be detected which is to be digested through the selector valve 3 and enters the detection mechanism for detection.
As shown in fig. 1, as a preferred embodiment of the present invention, the detecting mechanism includes:
the electrolytic cell 9 is used for inputting the water sample to be detected after digestion by the digestion mechanism; the electrolytic cell 9 is communicated with the selector valve 3;
a stirrer 10; the stirrer 10 is arranged in the electrolytic cell 9;
a working electrode 11; the working electrode 11 is arranged in the electrolytic cell 9;
a reference electrode 12; the reference electrode 12 is arranged inside the electrolytic cell 9;
an auxiliary electrode 13; the auxiliary electrode 13 is arranged in the electrolytic cell 9;
the constant potential driving module is used for controlling the potential on the working electrode 11; the constant potential driving module is electrically connected with the working electrode 11, the reference electrode 12 and the auxiliary electrode 13.
Specifically, the electrolytic cell 9 is made of quartz with high hardness, corrosion resistance, high temperature resistance and good electrical insulation. In actual operation, after the injection pump 2 conveys the digested water sample to be detected into the electrolytic cell 9, the stirrer 10 starts to operate, the constant potential driving module simultaneously controls the working electrode 11 to deposit for 180s at a potential of-1.2V, and then the stirrer 10 stops working. And after the operation is rested for 15s, the constant potential driving module performs a test based on the differential pulse stripping voltammetry on the working electrode 11, and obtains a differential pulse stripping voltammetry curve. After the test is finished, the constant potential driving module controls the working electrode 11 to be at the constant potential of 0.3V for 30s, and residual heavy metals are thoroughly dissolved out. And the analysis mechanism analyzes and calculates the differential pulse stripping voltammetry curve to obtain the type and concentration of the heavy metal in the water.
As shown in fig. 1, as a preferred embodiment of the present invention, the reagent storage mechanism includes:
a digestion liquid chamber 15; used for storing digestion liquid; the digestion liquid chamber 15 is communicated with the conveying mechanism;
a cleaning liquid chamber 14; for storing the cleaning liquid; the cleaning liquid chamber 14 is communicated with the conveying mechanism;
a waste liquid chamber 16; used for storing waste liquid; the waste liquid chamber 16 communicates with the conveying mechanism.
Specifically, when a water sample to be detected needs to be digested, the digestion liquid in the digestion liquid chamber 15 is conveyed to the digestion pool 5 by the injection pump 2. After the in-situ analyzer is tested, the injection pump 2 delivers the cleaning liquid in the cleaning liquid chamber 14 to clean the in-situ analyzer. After the cleaning is completed, the syringe pump 2 delivers the cleaned waste liquid into the waste liquid chamber 16.
As shown in fig. 3, as a preferred embodiment of the present invention, the control mechanism includes:
a power source;
the main control module is used for controlling the operation of the in-situ analyzer; the main control module is electrically connected with the digestion mechanism; the main control module is electrically connected with the conveying mechanism; the main control module is electrically connected with the detection mechanism; the main control module is electrically connected with the analysis mechanism; the main control module is electrically connected with the linear power supply;
a switching power supply; the system is used for converting commercial power into voltage or current required by each mechanism of the in-situ analyzer; the conveying mechanism and the digestion mechanism are electrically connected with the power supply through a switching power supply;
the linear power supply; the DC voltage is used for providing high-precision DC voltage; the detection mechanism, the analysis mechanism and the main control module are electrically connected with the power supply through a linear power supply;
serial port communication; for sharing the results of the computational analysis of the analysis mechanism.
Specifically, a 12V power supply is used as a power source, the main control module can adopt a TMS320C6748 model, and the main control module controls the operation of the whole in-situ analyzer; the switch power supply can be of an XSG1205000 model, and the linear power supply can be of an XC-1201000 model; the serial communication can adopt RS485 and RS232 interfaces. The main control module is electrically connected with the electromagnetic valve 8, the temperature sensor 7, the injection pump 2, the selector valve 3, the stirrer 10, the constant potential driving module and the analysis mechanism.
As shown in the attached figure 1, as a preferred embodiment of the present invention, the digestion tank 5 is made of quartz.
Specifically, the quartz material has high hardness, corrosion resistance, high temperature resistance and good electrical insulation, and can be prevented from being corroded by the digestion solution.
As shown in fig. 1, as a preferred embodiment of the present invention, the working electrode 11 is a boron-doped diamond thin film electrode; the reference electrode 12 adopts an Ag/AgCl electrode; the auxiliary electrode 13 is a platinum electrode.
Specifically, the boron-doped diamond film electrode has the advantages of wide potential window, low background current, no toxicity, no need of pretreatment on the surface, capability of being used for a long time without manual treatment and the like.
During actual detection, the main control module controls the injection pump 2 to pump a water sample to be detected into the sample inlet pipe 17, and the water sample to be detected is filtered by the filter 1; the main control module controls an electromagnetic valve 8 communicated with the filter 1 to be opened, a water sample to be detected enters the digestion tank 5, and the electromagnetic valve 8 communicated with the filter 1 is closed; the main control module controls the selector valve 3 to be communicated with the digestion liquid chamber 15, the main control module controls the injection pump 2 to pump digestion liquid in the digestion liquid chamber 15 into the liquid reservoir 4, the main control module controls the electromagnetic valve 8 communicated with the selector valve 3 to be opened, the main control module controls the selector valve 3 to be communicated with the digestion pool 5 after the electromagnetic valve 8 is opened, the main control module controls the injection pump 2 to convey the digestion liquid in the liquid reservoir 4 into the digestion pool 5, and the main control module controls the electromagnetic valve 8 communicated with the selector valve 3 to be closed; the thermistor temperature sensor 7 controls the heating wire 6 to heat the digestion tank 5, the heating temperature is 120 ℃, and the time is 10 min; after digestion is finished, the main control module controls the electromagnetic valve 8 communicated with the selector valve 3 to be opened, the main control module controls the injection pump 2 to convey the digested water sample to be detected into the liquid accumulator 4, the main control module controls the electromagnetic valve 8 communicated with the selector valve 3 to be closed, the main control module controls the selector valve 3 to be communicated with the electrolytic cell 9, and the main control module controls the digested water sample to be detected in the liquid accumulator 4 to enter the electrolytic cell 9; the main control module controls the stirrer 10 to start, the constant potential driving module simultaneously controls the working electrode 11 to deposit for 180s at the potential of-1.2V, and then the stirrer 10 stops working; the working electrode 11 is rested for 15s, then the constant potential driving module carries out a test based on differential pulse stripping voltammetry on the working electrode 11, and a differential pulse stripping voltammetry curve is obtained; the analysis mechanism calculates and analyzes the differential pulse stripping voltammetry curve to obtain the type and concentration of heavy metals in the water; after the detection is finished, the constant potential driving module controls the working electrode 11 to be at a constant potential of 0.3V for 30s, so that residual heavy metal is thoroughly dissolved out; then, the main control module controls the injection pump 2 to convey the cleaning liquid in the cleaning liquid chamber 15 to clean the in-situ analyzer, and after the cleaning is finished, the main control module controls the injection pump 2 to convey the cleaned waste liquid to the waste liquid chamber 16. Due to the fact that serial port communication is arranged, the analyzed result can be shared to other systems through the serial port communication.
As shown in the attached figure 2, the embodiment of the utility model also provides a use method of the in-situ analyzer for detecting heavy metals in water quality, the method includes the following steps:
the method comprises the following steps:
a water sample to be detected is extracted by the injection pump, filtered by the filter and then conveyed into the digestion tank;
then conveying digestion liquid in the reagent storage mechanism into the digestion pool by using the injection pump, and controlling the heating wire by using the temperature sensor to heat the digestion pool so as to carry out digestion treatment on a water sample to be detected;
then, conveying the digested water sample to be detected into the detection mechanism by using the injection pump, and detecting the digested water sample to be detected based on a differential pulse stripping voltammetry by using the detection mechanism to obtain detection data;
then, analyzing the detection data by using the analysis mechanism, and obtaining the types and the concentrations of the heavy metals in the water;
and finally, conveying the cleaning liquid in the reagent storage mechanism to clean the in-situ analyzer by using the injection pump, and conveying the cleaned waste liquid into the reagent storage mechanism by using the injection pump after the cleaning is finished.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a detect normal position analysis appearance of quality of water heavy metal, stores mechanism and analytic mechanism including reagent, the reagent is stored the mechanism and is stored digestion liquid, washing liquid and waste liquid, its characterized in that, normal position analysis appearance still includes:
the digestion mechanism is used for converting metal elements in the water sample to be detected into single high-valence ions or inorganic compounds through digestion liquid;
the detection mechanism is used for detecting the water sample to be detected after digestion by the digestion mechanism based on a differential pulse stripping voltammetry method and obtaining detection data; the analysis mechanism analyzes the detection data to obtain the types and the concentrations of the heavy metals in the water; the detection mechanism is connected with the analysis mechanism;
the conveying mechanism is used for conveying a water sample to be detected into the digestion mechanism; used for conveying digestion liquid into the digestion mechanism; the device is used for conveying the water sample to be detected after digestion by the digestion mechanism into the detection mechanism; the in-situ analyzer is used for conveying cleaning fluid to clean the in-situ analyzer; the reagent storage mechanism is used for conveying waste liquid into the reagent storage mechanism; the digestion mechanism, the detection mechanism and the reagent storage mechanism are communicated through the conveying mechanism.
2. The in-situ analyzer for detecting heavy metals in water according to claim 1, wherein the conveying mechanism comprises:
a sample inlet pipe;
the liquid storage device is used for temporarily storing one of digestion liquid, a digested water sample to be detected, cleaning liquid and waste liquid;
an injection pump; the injection pump is connected with the liquid reservoir;
a selector valve; the selector valve is communicated with the liquid reservoir; the selection valve is communicated with the reagent storage mechanism; the selection valve is communicated with the digestion mechanism; the selector valve is in communication with the detection mechanism.
3. The in-situ analyzer for detecting heavy metals in water according to claim 2, wherein the conveying mechanism further comprises:
a filter; the filter is communicated with the sample inlet pipe.
4. The in-situ analyzer for detecting heavy metals in water quality according to claim 3, wherein the digestion mechanism comprises:
the digestion pool is used for inputting digestion liquid to carry out digestion treatment on a water sample to be detected;
heating wires; the heating wire is wound on the outer wall of the digestion tank;
the temperature sensor is used for controlling the heating temperature and the heating time of the heating wire; the heating wire is electrically connected with the temperature sensor;
an electromagnetic valve; the electromagnetic valve is provided with two pieces; the digestion pool is communicated with the selection valve through one piece of the electromagnetic valve; the digestion pool is communicated with the filter through another piece of the electromagnetic valve.
5. The in-situ analyzer for detecting heavy metals in water according to claim 2, wherein the detection mechanism comprises:
the electrolytic cell is used for inputting the water sample to be detected after digestion by the digestion mechanism; the electrolytic cell is communicated with the selection valve;
a stirrer; the stirrer is arranged in the electrolytic cell;
a working electrode; the working electrode is arranged in the electrolytic cell;
a reference electrode; the reference electrode is arranged in the electrolytic cell;
an auxiliary electrode; the auxiliary electrode is arranged in the electrolytic cell;
the constant potential driving module is used for controlling the potential on the working electrode; the constant potential driving module is electrically connected with the working electrode, the reference electrode and the auxiliary electrode.
6. The in-situ analyzer for detecting heavy metals in water according to claim 2, wherein the reagent storage mechanism comprises:
a digestion liquid chamber; the digestion liquid chamber is communicated with the selection valve;
a cleaning liquid chamber; the cleaning liquid chamber is communicated with the selection valve;
a waste chamber; the waste chamber is in communication with the selector valve.
7. The in-situ analyzer for detecting heavy metals in water according to claim 1, further comprising a control mechanism, wherein the control mechanism comprises:
a power source;
the main control module is used for controlling the operation of the in-situ analyzer; the main control module is electrically connected with the digestion mechanism; the main control module is electrically connected with the conveying mechanism; the main control module is electrically connected with the detection mechanism; the main control module is electrically connected with the analysis mechanism; the main control module is electrically connected with the linear power supply;
the switching power supply is used for converting commercial power into voltage or current required by each mechanism of the in-situ analyzer; the conveying mechanism and the digestion mechanism are electrically connected with the power supply through a switching power supply;
the linear power supply is used for providing high-precision direct-current voltage; the detection mechanism, the analysis mechanism and the main control module are electrically connected with the power supply through a linear power supply;
and the serial port communication is used for sharing the calculation and analysis results of the analysis mechanism.
8. The in-situ analyzer for detecting heavy metals in water quality according to claim 4, wherein the digestion tank is made of quartz.
9. The in-situ analyzer for detecting heavy metals in water quality according to claim 5, wherein the working electrode is a boron-doped diamond film electrode; the reference electrode adopts an Ag/AgCl electrode; the auxiliary electrode adopts a platinum electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020670742.6U CN212483449U (en) | 2020-04-28 | 2020-04-28 | In-situ analyzer for detecting heavy metals in water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020670742.6U CN212483449U (en) | 2020-04-28 | 2020-04-28 | In-situ analyzer for detecting heavy metals in water |
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