Cumulative environmental risk early warning method for soil heavy metal pollution

Abstract

The invention discloses a cumulative environmental risk early warning method for soil heavy metal pollution, and the method comprises the following steps: setting a sample collection point, and collecting a soil sample and a crop sample; analyzing the content of heavy metal pollutants in the soil sample and the crop sample; calculating the heavy metal content in the soil sample, comparing the heavy metal content with a preset value, and judging the risk level of the heavy metal content; calculating the heavy metal content in the agricultural product sample, comparing the heavy metal content with a preset value, and judging the risk level of the heavy metal content; analyzing the heavy metal contents of the same sample collection point in different years, and calculating the soil heavy metal pollution accumulation rate; according to the heavy metal content in the soil sample, the heavy metal content in the agricultural product sample and the soil heavy metal pollution accumulation rate,calculating the accumulative environmental risk early warning level of the soil heavy metal pollution in the investigation area, and taking corresponding treatment measures to improve the damage of the heavy metal pollution to the environment.

Description

technical field [0001] The invention belongs to the technical field of soil pollution prevention and early warning of environmental risks, and in particular relates to a method for early warning of cumulative environmental risks of soil around heavy metal pollution sources. Background technique [0002] Heavy metals are a common type of pollutant. Human activities lead to an increase in the content of heavy metals in the environment. Exceeding the normal range will lead to the deterioration of environmental quality and directly endanger the safety of agricultural products and human health. my country has clearly identified five heavy metals as lead, mercury, chromium, cadmium, and arsenic as priority pollutants. my country's heavy metal-related industries have a large number of enterprises and are widely distributed. Unlike the sudden environmental risks caused by short-term high-concentration pollution discharges, long-term low-concentration heavy metal pollution discharge...

AI Technical Summary

Problems solved by technology

However, soil cumulative environmental risk has the characteristics of long occurrence cycle, slow cumulative change, and strong concealment. Once environmental damage is caused, it will often lead to negative social impacts, and it is more difficult to control. The early warning and prediction methods of sudden environmental risks cannot be directly applied to Cumulative environmental risk early warning field

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