Investigation and assessment of soil contaminated by organophosphorus pesticides using spot setting method

Abstract

The contaminated soil caused by an organophosphorus pesticide production enterprise was evaluated, in order to provide constructive suggestions for the future remediation work. This study follows the basic technical route of sampling with the method of distribution, and combined with the relevant national laws and regulations and the actual situation of the site to evaluate and analyze, and finally find out whether the characteristic pollutants of the contaminated site exceed the standard and the environmental health risk. The results show that in the selected contaminated sites, the method can be implemented and obtained clear analysis results. The characteristic pollutants such as benzene, ethiophosphorus and parathion are far beyond the national standards, and seriously endanger the life and health of the surrounding residents. Conclusions:1) In the assessment of some contaminated sites, especially those contaminated by organophosphorus pesticides, the sampling method has the advantages of uniform, extensive, accurate and low sampling cost;2) The pollutants related to the polluted site, especially the volatile organic compounds such as benzene and parathion, are much higher than the limit value, and the peculiar smell is obvious, which seriously endangers the life and health of surrounding residents, causing the attention of relevant departments and providing guiding opinions for the future restoration work. In the future, the pollutants in the polluted site will be effectively removed through the restoration work. To ensure the life and health of neighboring residents, and promote China's ecological civilization construction.