重金属污染土壤化学萃取修复技术影响因素分析

被引:21
作者
刘云国
黄宝荣
练湘津
张慧智
李欣
机构
[1] 湖南大学环境科学与工程系
[2] 湖南大学环境科学与工程系 湖南长沙 
[3] 湖南长沙 
基金
湖南省自然科学基金;
关键词
重金属; 土壤; 萃取; 修复; 影响因素;
D O I
暂无
中图分类号
X53 [土壤污染及其防治];
学科分类号
082803 ; 120405 ;
摘要
研究了重金属污染土壤化学萃取修复技术中一些关键因素对重金属萃取效率的影响.研究发现,腐殖酸对Cu和Zn在萃取剂中的溶解有促进作用,而对Pb和Cd有阻碍作用;粘土比砂土中的重金属更难于被萃取出来;酸性过强的土壤容易使EDTA发生质子化,从而降低其萃取能力;EDTA对Pb和Cd,OA对Cu和Zn分别表现出了强的萃取能力;生物表面活性剂可以作为添加剂来提高重金属的萃出效率.
引用
收藏
页码:95 / 98
页数:4
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