Sampling analysis method for industrial factory district heavy metal pollution site

Abstract

The invention relates to a sampling analysis method for an industrial factory district heavy metal pollution site. The sampling analysis method for the industrial factory heavy metal pollution site comprises the following four steps that 1, soil sampling is conducted on a factory district; 2, sample testing result statistics and space distribution analysis are conducted; 3, comparative analysis with background concentration is conducted; 4, correlation analysis is conducted, wherein when the Pearson coefficient of a Pearson relevance detection result of the concentration of a metal in soil of a specific site and the concentrations of other heavy metals of the specific site is larger than 0.05, the relevance between the concentration of the heavy metal and the concentrations of other heavy metals is poor, and it means that the soil of the site is polluted by the heavy metal. The sampling analysis method has the advantages that estimation is conducted from the four aspects of site land historical data analysis and site survey, sample concentration statistics and space distribution analysis, site target heavy metal background concentration comparison and heavy metal homologous analysis, and it is guaranteed that the evaluation result is higher in reliability.

Description

technical field [0001] The invention relates to a sampling and analysis method for heavy metal polluted sites in industrial factory areas, and belongs to the field of environmental science and engineering technology. Background technique [0002] At present, cities such as Beijing, Shanghai, Chongqing, and Dalian have carried out large-scale urban transformation, and a large number of polluting enterprises have gradually withdrawn from the urban centers, leaving behind a large amount of heavily polluted land that is indeed a precious resource. Among them, sites polluted by heavy metals account for a certain proportion. Corresponding pollution assessments should be carried out before the development and utilization of these sites, and corresponding restoration plans should be formulated accordingly. [0003] Unlike agricultural and other non-residential heavy metal-contaminated soils, most of the heavy metal-contaminated sites left over from the urbanization process will be c...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the direct use of soil quality standards, screening values ​​calculated based on human health risks, or regional soil background values ​​reported in literature as specific heavy metal industrial site pollution assessment standards may lead to a lack of objectivity in the assessment results. A multi-evidence assessment method for heavy metal industrial site pollution, comprehensive analysis of heavy metal industrial site site history data and site survey, sample concentration statistics and spatial distribution, site target heavy metal background concentration comparison, and heavy metal homology. Sampling and analysis of pollution status, including the following 4 steps: