摘要
采用为期60 d的室内培养方法探究南方典型红壤和灰壤中添加高浓度外源铅后Pb稳定化过程。结果表明,加入高浓度外源铅后,土壤有效态Pb含量在培养期内呈现先降低后稳定的趋势,培养30 d后DTPA(二乙烯三胺五乙酸)-Pb浓度基本达到稳定平衡,土壤离子交换态Pb、碳酸盐结合态Pb含量明显降低,形态-BAC风险评价方法表明,供试土壤均能在自然条件下降低铅的生态风险危害,能为修复铅污染土壤工程应用提供科学依据。
The transform and stabilization process of external lead in red and gray soil of southern part of China were studied through 60 days of soil incubation. The results show that after the additions of high concentrations of external lead,soil available Pb showed a tendency of decrease at first and stable at last during soil incubation and soil DTPA-Pb showed a stable trend during the first 30 days. The results of the Form-BAC risk evaluation method show that the concentrations of Pb significantly decreased in the exchangeable and carbonate fractions lowering the risk of human health and ecology in tested soil under natural conditions,and provide the scientific basis for the engineering application of remediation of lead contaminated soil.
出处
《环境工程学报》
CAS
CSCD
北大核心
2016年第1期410-414,共5页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(41161056)
广西"八桂学者"建设工程专项
广西自然科学基金重大项目(No.2013GXNSFEA053002)
关键词
外源铅
形态
转化
应用
external lead
form
transform
application
