Method for detecting heavy metal elements in polluted flow of soil-water interface of non-ferrous metal mining area

Abstract

The invention discloses a method for detecting heavy metal elements in a non-ferrous metal mining area soil-water interface pollution flow, which comprises the following steps: S1, sample collection: collecting samples in the non-ferrous metal mining area soil-water interface pollution flow by using a collection cylinder, and sampling different positions in the pollution flow by adopting a random sampling mode; s2, sample treatment: respectively carrying out vacuum drying on the collected samples, crushing and sieving after drying to obtain sample powder, adding the sample powder into a polytetrafluoroethylene pressure digestion tank, and adding a digestion solution into the tank for digestion treatment to obtain a solution to be detected. According to the method for detecting the heavy metal elements in the soil-water interface pollution flow of the non-ferrous metal mining area, the atomic absorption spectrometer is adopted for detection, the detection limit is low, the detection sensitivity and accuracy are high, operation is easy and convenient, the pollution degree is rapidly detected, assistance is provided for follow-up treatment and maintenance, and great application value and social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of heavy metal detection, in particular to a method for detecting heavy metal elements in soil-water interface pollution flow in non-ferrous metal mining areas. Background technique [0002] The soil-water interface pollution flow is a composite pollution fluid produced by the polluted soil under the action of rainfall or snowmelt runoff. The pollutants include various heavy metals, persistent organic matter and nutrients such as nitrogen and phosphorus, and are also non-point source pollution. a special form of expression. [0003] Non-ferrous metals (such as Sb, As, Pb, Cd, Cr, Cu, Zn, Hg, etc.) are global environmental pollutants, all of which are chronically toxic and carcinogenic to humans and organisms. With the large-scale use of non-ferrous metals (such as antimony, lead, zinc, etc.) in various industries and large-scale mining and beneficiation, a large number of associated heavy metals enter the s...

AI Technical Summary

Problems solved by technology

With the massive use of non-ferrous metals (such as antimony, lead, zinc, etc.) The heavy metal pollution flow at the water interface has caused the problem of complex heavy metal pollution in the water environment of non-ferrous metal mining areas and its surrounding areas and has become increasingly prominent. Atomic absorption spectroscopy can quickly measure the concentration of metal ions in the solution. When the atomic absorption spectrometer is in use, it is generally immovable. It increases the difficulty of moving. If it is designed to be movable, the atomic absorption spectrometer is prone to automatic movement when there is no staff to control it or when it is hit by a collision. The atomic absorption spectrometer is not stable enough, so we make improvements to this , a method for the detection of heavy metal elements in soil-water interface pollution flow in non-ferrous metal mining areas was proposed

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