Detection method and detection device for content of heavy metals in soil

A detection device and heavy metal technology, which is applied in the direction of measurement device, preparation of test samples, material analysis through observation of the influence on chemical indicators, etc., can solve the problems of inconvenient field detection, high technical operation and cumbersome detection methods, etc. , to achieve the effect of novel design structure, low technicality, and convenient fixing of test paper

Inactive Publication Date: 2019-02-15
广东精科环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of the existing detection methods which are cumbersome, inconvenient for field detection, inconvenient to use, not concentrated, and highly technical in operation, and propose a detection method and device for heavy metal content in soil

Method used

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  • Detection method and detection device for content of heavy metals in soil
  • Detection method and detection device for content of heavy metals in soil
  • Detection method and detection device for content of heavy metals in soil

Examples

Experimental program
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Effect test

Embodiment 1

[0038] In the aqueous solution to be tested, add ascorbic acid solution and potassium iodide solution and its concentration is 0.005mol / L and 0.15mol / L, make the [H of nitric acid aqueous solution + ] is 0.34mol / L, 2% o-phenanthroline, reacts with cadmium test paper for 300 seconds under natural light, and then compares color with the colorimetric mechanism to detect the pollution index of cadmium.

Embodiment 2

[0040] In the aqueous solution to be tested, add ascorbic acid solution and potassium iodide solution and its concentration is 0.005mol / L and 0.15mol / L, make the [H of nitric acid aqueous solution + ] is 0.30mol / L, and the masking agent solution is 2% APDC, reacts with mercury test paper for 90 seconds under natural light and compares color with the colorimetric mechanism, thereby being used to detect the pollution index of mercury.

Embodiment 3

[0042] In the aqueous solution to be tested, add ascorbic acid solution and potassium iodide solution and its concentration is 0.005mol / L and 0.15mol / L, make the [H of nitric acid aqueous solution + ] is 0.40mol / L, and the masking agent solution is 2% APDC, reacts with the lead test paper for 480 seconds under natural light and then compares the color with the colorimetric mechanism, thereby being used to detect the pollution index of lead.

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Abstract

The invention discloses a detection device for the content of heavy metals in soil. The detection device comprises a soil treatment mechanism and a colorimetric mechanism matched with the soil treatment mechanism; wherein the soil treatment mechanism comprises a pedestal plate; two support plates are fixedly mounted at the top end of the pedestal plate; the top ends of the support plates are welded with horizontally-arranged first support blocks; first connecting blocks are fixedly mounted on the first support blocks; a crushing cylinder is fixedly mounted between the first connecting blocks;a first end cover is mounted at the top end of the crushing cylinder through screws; a rotating rod is rotationally mounted in the middle position of the first end cover; and the bottom end of the rotating rod extends to the interior part of the crushing cylinder. The detection device is novel in structural design, perfect in functions, obvious in effects, simple in detection method, convenient tooperate and low in technicality, can adapt to different groups of people, is worth being popularized, and can be operated by even non-professional personnel, thereby being able to be sold to and usedby ordinary people.

Description

technical field [0001] The invention relates to the technical field of metal ion detection, in particular to a method and a device for detecting heavy metal content in soil. Background technique [0002] Metals with a relative density above 4.5g / cm3 in the physical sense are called heavy metals. There are 60 natural metal elements with atomic numbers ranging from 23 (V) to 92 (U), of which 54 have a relative density greater than 4.5 g / cm3, so in terms of relative density, these 54 metals are all heavy metals. However, when conducting elemental analysis, some of them belong to rare earth metals, and some are classified as refractory metals. Finally, the elements that are actually classified as heavy metals in industry are: copper, lead, zinc, tin, nickel, cobalt, antimony, Mercury, cadmium, and bismuth, these 10 metals are widely used in modern industry. Except for the commonality of metals and the density greater than 5, there is no other special commonality in physics. How...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N1/28G01N1/38G01N1/34G01N21/77G01N21/01
CPCG01N1/2853G01N1/286G01N1/34G01N1/38G01N21/01G01N21/77G01N21/78G01N2001/2873G01N2021/0112G01N2021/7759
Inventor 张豫黄振兴黄中华罗强曾文龙李婷婷刘海燕徐秀媚范敬文陈宜发
Owner 广东精科环境科技有限公司
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