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Arsenic analyzer, system device comprising same and application of device

An analyzer, a technology of trivalent arsenic, applied in the field of environmental pollutant detection, can solve the problems of operator health threat, insufficient sensitivity, unfriendly environment, etc., to improve adsorption and diffusion flux, the method is simple and direct, and the environment is friendly Effect

Pending Publication Date: 2020-08-25
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the method stability that this invention provides is poor, produces AsH in the detection process 3 The gas is highly toxic. If it is not handled properly, it will leak, which will pose a great threat to the health of the operator, and the environment is not friendly. The colorimetric method is a semi-quantitative method. The accuracy is not high enough, and the sensitivity is not high enough. Arsenic detection

Method used

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  • Arsenic analyzer, system device comprising same and application of device
  • Arsenic analyzer, system device comprising same and application of device
  • Arsenic analyzer, system device comprising same and application of device

Examples

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Embodiment 1

[0085] This embodiment provides an arsenic analyzer. The arsenic analyzer 1 includes a casing and an internal circuit module. The casing is provided with an external interface, and the external interface is connected to the internal circuit module. The internal circuit module includes A first digital-to-analog conversion module, a carrier module and a second digital-to-analog conversion module, the carrier module is used to connect the first digital-to-analog conversion module and the second digital-to-analog conversion module;

[0086] The external interface includes a three-electrode connection line external interface 211, a USB connection line external interface 212 and a stirring connection line external interface 213;

[0087] The first digital-to-analog conversion module is a constant potential and / or constant current circuit board 311, which is provided with a three-electrode connecting line internal interface 312 for connecting the three-electrode connecting line extern...

Embodiment 2

[0091] This embodiment provides an arsenic analyzer. In addition to the components provided in Embodiment 1, the arsenic analyzer 1 also includes: a three-electrode connection line 45, a USB connection line 52 and a stirring connection line 46. The three-electrode connection line 45 , for connecting the three-electrode connection line external interface 211 and the three electrodes 43; the USB connection line 52 is used for connecting the USB connection line external interface 212 and the control module; the stirring connection line 46 is used for connecting the stirring connection line external interface 213 and stirrer 41.

Embodiment 3

[0093] This embodiment provides an arsenic analysis system device. The arsenic analysis system device includes: a control module connected in sequence, the arsenic analyzer 1 and the detection module in Embodiment 1;

[0094] The detection module includes a magnetic stirrer 41, a sample pool 42 and three electrodes 43. The magnetic stirrer 41 is connected to the external interface 213 of the stirring connection line of the arsenic analyzer 1 through a stirring connection line 46, and a sample pool 42 is arranged on it. , for stirring the liquid to be tested in the sample pool 42; a magnet 411 is placed in the sample pool 42;

[0095] The three electrodes 43 are placed in the sample cell 42 for detecting arsenic in the liquid to be tested, and are connected to the three-electrode connection line 45 through the electrode connector 46, and the three-electrode connection line 45 is connected to the three electrodes of the arsenic analyzer 1. The electrode connection line is connec...

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Abstract

The invention relates to an arsenic analyzer, a system device comprising the same and the application of the device. The arsenic analyzer comprises a shell and an internal circuit module, wherein theshell is provided with an external interface, the external interface is connected with the internal circuit module, the internal circuit module comprises a first digital-to-analog conversion module, acarrier module and a second digital-to-analog conversion module, and the carrier module is used for connecting the first digital-to-analog conversion module and the second digital-to-analog conversion module; the first digital-to-analog conversion module comprises a constant potential and / or constant current circuit board; and the second digital-to-analog conversion module comprises a stirring control circuit board. An arsenic analysis system device constructed by adopting the arsenic analyzer is used for quantitatively analyzing trivalent arsenic in a water body, the sensitivity of the analysis method is high, and the detection of the content of the trivalent arsenic with ppb concentration magnitude can be completed within 10 minutes. The arsenic analyzer is low in energy consumption, good in stability, compact in structure, convenient to carry and suitable for on-site quick detection of trivalent arsenic.

Description

technical field [0001] The invention relates to the technical field of environmental pollutant detection, in particular to an arsenic analyzer, a system device including the same and the application of the device. Background technique [0002] Both arsenic and its compounds are toxic. Excessive intake of arsenic by the human body will cause arsenic poisoning, and the toxicity of arsenic is closely related to its chemical form. The toxicity of different forms of arsenic varies greatly. Among them, trivalent arsenic has strong toxicity . In recent years, the increase in the discharge of arsenic-containing wastewater from industries such as mining, metallurgy, chemical pharmaceuticals, and textiles has led to a rapid increase in the arsenic content in the environment. The detection of arsenic in water has become a must-test item for environmental pollutant detection. [0003] At present, the detection methods of arsenic in water mainly include atomic fluorescence spectrometry ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/48G01N1/38
CPCG01N27/48G01N1/38
Inventor 毕兆顺郑焰
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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