Method using X fluorescent spectrometry method to fast measure cadmium elements in soil

Abstract

The invention discloses a method using an X fluorescent spectrometry method to fast measure cadmium elements in soil. The method includes the steps of firstly, taking a certain amount of soil powder; secondly, loading the soil powder into the sample cup, and using a manual tablet press to compact the soil powder to form a to-be-measured sample; thirdly, placing the to-be-measured sample into a sample testing box, wherein the sampling testing box comprises a shell, a sample table and a hand-held machine, the upper end of the shell is provided with a hole, an elastic piece is mounted in the hole, the sample table is mounted at the bottom end in the shell, the front end of the hand-held machine is provided with N grooves, and the hand-held machine is connected with the sample testing box through the coordination of the grooves and the elastic piece; fourthly, using the X fluorescent spectrometry method to measure the X fluorescence intensity of the to-be-measured sample; fifthly, calculating the cadmium element content in the soil on the basis of the X fluorescence intensity of the to-be-measured sample. The method has the advantages that the portable X fluorescent spectrometry method is used to directly perform quantitative analysis on the cadmium elements, measuring accuracy can reach above 96%, and the method is simple to operate, free of pollution, free of consumables, small in size, portable and convenient in field work and on-site analysis.

Description

technical field [0001] The invention relates to environmental detection, in particular to a method for determining cadmium in soil. Background technique [0002] In recent years, heavy metal pollution accidents have occurred frequently. These heavy metal pollution incidents have not only brought significant economic losses to the society but also threatened people's healthy life. They have also attracted great attention from the relevant national environmental protection departments. At the same time, heavy metal pollution prevention and control, and heavy metal monitoring The work is placed in a more urgent and important position; the national standard for the detection of heavy metal cadmium in soil is basically a chemical detection method, and the sample needs to be treated with acid. The treatment method generally uses microwave digestion method, wet digestion method, etc. The operation is cumbersome, strong acid is used at the same time, a large amount of acid gas is ge...

AI Technical Summary

Problems solved by technology

[0002] In recent years, heavy metal pollution accidents have occurred frequently. These heavy metal pollution incidents have not only brought significant economic losses to the society but also threatened people's healthy life. They have also attracted great attention from the relevant national environmental protection departments. At the same time, heavy metal pollution prevention and control, deepening heavy metal monitoring The work is placed in a more urgent and important position; the national standard for the detection of heavy metal cadmium in soil is basically a chemical detection method, and the sample needs to be treated with acid, and the treatment method generally adopts microwave digestion method, wet digestion method, etc. The operation is cumbersome, strong acid is used at the same time, a large amount of acid gas is generated, and the entire sample processing time is long, at least 2 hours, which is time-consuming and laborious; at the same time, this method can only be sampled for testing, which cannot meet the requirements of rapid on-site testing

Images