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Method and device for measuring metal elements in soil

A technology of metal elements and measurement methods, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of not suitable for portable XRF instruments, cannot consider the influence of soil moisture measurement results, poor measurement accuracy, etc., to achieve the operation mode The effect of flexibility and variety, improving measurement accuracy and easy portability

Inactive Publication Date: 2011-08-31
贵州聚科技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technologies all adopt the method of drying and pretreatment of soil samples. However, pretreatment measures such as drying of soil samples are not suitable for portable XRF instruments.
Therefore, the current portable XRF instruments measure the approximate concentration of metal elements in the soil, without (cannot) consider the influence of soil moisture on the measurement results, and the measurement accuracy is poor

Method used

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  • Method and device for measuring metal elements in soil
  • Method and device for measuring metal elements in soil
  • Method and device for measuring metal elements in soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, a portable measuring device for metal elements in soil is used to measure the concentration of metal elements in the soil 2 to be tested.

[0042] The measuring device includes a portable soil metal analyzer, and the analyzer includes an X-ray light source 1 , a detector 3 , and a processing unit 4 .

[0043] The measuring device also includes a soil moisture sensor 5 and a soil moisture correction module, and the analyzer and the soil moisture sensor 5 are independent devices that are not connected to each other. The soil moisture sensor 5 displays the measured soil moisture, and the soil moisture correction module is set in the processing unit 4 .

[0044] The above-mentioned X-ray light source 1 can be a light source such as an isotope source or an X-ray light tube, and the present embodiment uses an X-ray light tube. The detector 3 can be a silicon drift detector (SDD), a Si-PIN detector, a Si(Li) detector or other detectors, and this em...

Embodiment 2

[0061] A portable measuring device for metal elements in soil is the same as in Example 1.

[0062] This embodiment also provides a method for measuring metal elements in soil with a humidity correction function. The difference from Embodiment 1 is that step c is:

[0063] c1. The operator retrieves the measuring device;

[0064] c2. The operator returns to the office, and inputs the soil moisture H measured in step b to the processing unit in the soil metal analyzer;

[0065] c3. The soil moisture correction module in the processing unit processes the concentration C' and soil moisture H according to C=C' / (1-H), so as to obtain the corrected concentration C of the metal element to be measured.

Embodiment 3

[0067] Such as figure 2 As shown, a portable soil metal element measurement device is used to measure the concentration of metal elements in soil 2.

[0068] The measuring device includes a portable soil metal analyzer, and the analyzer includes an X-ray light source 1 , a detector 3 and a processing unit 6 .

[0069] The measuring device also includes a soil moisture sensor 7 and a soil moisture correction module, the output end of the soil moisture sensor 7 is connected to the processing unit 6 , and the soil moisture correction module is set in the processing unit 6 .

[0070] The soil moisture sensor 7 is integrated on the soil metal analyzer through an interlocking structure, and the interlocking structure controls the insertion and extraction of the soil moisture sensor 7 into and out of the soil 2: when the soil moisture sensor 7 needs to be used to measure soil moisture, start the interlocking structure, just insert the soil moisture sensor 7 into the soil 2 to be te...

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Abstract

The invention discloses a method for measuring metal elements in soil, comprising the following steps: a. an operator carries a portable soil metal analyzer and a soil humidity sensor to soil to be measured and arranges the analyzer on a soil point to be measured; b. an X-ray emitted by a light source irradiates on the soil to be measured, a detector receives the X-ray fluorescence sent by the soil to be measured, and the concentration C' of the metal element in the soil to be measured is obtained after processing; c. the operator takes back the measurement device; the measurement steps also comprise a humidity correction process, namely, a processing unit obtains the correction concentration C of the metal element to be measured according to the concentration C' , the humidity H, and C equal to F(C',H); and the humidity correction process is carried out in the step b or c. The invention also discloses a device for measuring the metal element in the soil. The method and the device have the advantages of simple and quick operation, flexible operation modes, high measurement accuracy, wide application range, and the like, and can be widely applied to the measurement of the metal elements in the soil.

Description

technical field [0001] The invention relates to metal measurement, in particular to a method and device for measuring metal elements in soil. Background technique [0002] In recent years, due to the rapid growth of population and the rapid development of industry, solid wastes are continuously stacked and dumped on the soil surface, harmful waste water is continuously infiltrated into the soil, and harmful gases and floating dust in the atmosphere are also continuously falling into the soil with rainwater, resulting in soil pollution. . Soil pollution directly affects the structure and function of the soil ecosystem, and finally poses a threat to ecological security and people's health. [0003] There is usually a long time lag between soil pollution and the appearance of problems. Therefore, soil pollution is not easy to be taken seriously. The prevention and control of soil pollution is generally based on "prevention first", which requires the assessment and investigati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/223
Inventor 王宏夏阿林郭生良
Owner 贵州聚科技术服务有限公司
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