安徽农业科学2025，Vol.53Issue(10)：91-95,5.DOI:10.3969/j.issn.0517-6611.2025.10.018
重金属复合重污染土壤分析表征评价及比较研究
Evaluation of Analytical Characterization and Comparative Study of Heavy Metal Composite Heavily Contaminated Soil
摘要
Abstract
In this paper,soil samples from heavy metal composite heavily contaminated sites were systematically studied,evaluated and com-pared in terms of total amount of heavy metals,morphological distribution and potential ecological hazards using various analytical methods.The results show that there are significant differences in the heavy metal contents of different soil samples,and some of the heavy metal con-tents far exceeded the screening value of the second category of construction sites in China.Through the Tessier five-step extraction method,the heavy metal accumulation patterns in soil were analyzed,and it was found that there were significant differences in the stability and mobility of different patterns of heavy metals,which is of great significance for their ecological risk assessment.Based on the evaluation indexes such as Risk Assessment Coding Method(RAC)and Index of Ground Accumulation(Igeo),it was found that Cd and Pb were the most serious ele-ments with potential ecological hazards,and some of the indexes reached the level of very serious pollution.In addition,the stability and mi-gration capacity of heavy metals in soil were evaluated by comparing various leaching methods such as TCLP,deionized water leaching,sulfu-ric acid nitric acid leaching and SBET,and the results showed that the TCLP method was effective in leaching Cd and Pb,while the SBET method revealed the potential risk of heavy metals of the soil in the human digestive system.This study can provide data and methodological references for the evaluation and remediation of heavy metal composite polluted soil.关键词
重金属复合/重污染场地/表征评价Key words
Heavy metal composite/Heavily contaminated sites/Characterization and evaluation分类
农业科技引用本文复制引用
朱悦,李也,文丹,赵静,李少林..重金属复合重污染土壤分析表征评价及比较研究[J].安徽农业科学,2025,53(10):91-95,5.基金项目
国家重点研发计划(2019YFC1805202). （2019YFC1805202）
