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Method for measuring mercury content in soil

A content and soil technology, applied in soil material testing, sampling devices, material inspection products, etc., can solve problems such as accident-prone, difficult to carry, inaccurate measurement, etc., to achieve a wide dynamic linear range of measurement, simple detection methods, and improved The effect of work efficiency

Active Publication Date: 2018-06-19
江苏中宜金大分析检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the existing methods for measuring mercury content in soil have disadvantages such as complicated operation and inaccurate measurement.
[0007] At the same time, the common soil sample collection method is to collect by hand, which is labor-intensive, and the collected soil samples are not comprehensive enough, which affects the experimental results
Application number CN201620310384.1 provides an environmental soil sample collection device. Because of its insufficient stability during operation, the device is prone to accidents during use, causing unnecessary harm to users; and it is not easy to carry, soil sample collection Disadvantages such as uncontrollable depth

Method used

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  • Method for measuring mercury content in soil
  • Method for measuring mercury content in soil
  • Method for measuring mercury content in soil

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Experimental program
Comparison scheme
Effect test

Embodiment

[0036] Embodiment: a kind of method for measuring mercury content in soil mainly comprises the following steps:

[0037] (1) Soil sample collection and storage: use soil sample collection device 1 to collect according to the relevant regulations of HJ / T166, and then store the soil sample; the process of sample collection, transportation and storage should avoid contamination and loss of elements to be measured;

[0038] (2) Sample preparation: Remove foreign matter in the sample, including sticks, leaves, and stones. According to the requirements of HJ / T166, the collected samples are air-dried, coarsely ground, and finely ground to a hole diameter of 0.15mm (100 mesh) Sieve; sample preparation process should avoid contamination and loss of analyte elements;

[0039] (3) Use a mercury detector to detect:

[0040](a) Preparation of standard solution: take mercury standard stock solution, and use 0.5% nitric acid solution to gradually dilute to the standard working solution whos...

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Abstract

The invention discloses a method for measuring mercury content in soil. The method mainly comprises the following steps: collecting and preserving a soil sample; preparing a sample; detecting by usinga mercury detector; analyzing results. The invention also provides a soil sample collecting device for measuring the mercury content in the soil. The soil sample collecting device comprises a power unit, a supporting device and a collecting head; the power unit comprises a casing, a motor and a power source; the motor is arranged in the casing, the power source supplies power to the motor; the supporting device is connected with the power unit; and the collecting head comprises a connection rod and a probe; the method for measuring the mercury content in the soil is simple, rapid, fast in analysis and low in detection limit and wide in measurement dynamic linear range compared with an atomic fluorophotometer; the working efficiency is greatly improved; the soil sample collecting device can reduce Labor intensity; and the foldable supporting device can provide better support and is more convenient to carry.

Description

technical field [0001] The invention relates to the technical field of soil environmental protection detection, in particular to a method for measuring mercury content in soil. Background technique [0002] Soil heavy metal pollution refers to human activities, the content of trace metal elements in the soil exceeds the background value, and the excessive content caused by excessive deposition is collectively referred to as soil heavy metal pollution. Soil heavy metals refer to the phenomenon that human activities add metals to the soil, causing the heavy metals in the soil to be significantly higher than the original content, and resulting in the deterioration of the quality of the ecological environment. [0003] Among the soil inorganic pollutants, heavy metals are more prominent, mainly because heavy metals cannot be decomposed by soil microorganisms, but are easy to accumulate and transform into more toxic methyl compounds, and some even accumulate in the human body at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N1/08
CPCG01N1/08G01N33/24
Inventor 许柯任洪强刘敏敏曾超
Owner 江苏中宜金大分析检测有限公司
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