应用体外试验方法评价铅污染城市土壤化学修复效果  

Assessment of Chemical Remediation Effect on Pb-Contaminated Urban Soil by Using in vitro Test

作　　者：尹伟[1] 卢瑛[1] 甘海华[1] 陈春霞[1] 董飞[1] 

机构地区：[1]华南农业大学资源环境学院,广东广州510642

出　　处：《华南农业大学学报》2011年第4期27-30,共4页Journal of South China Agricultural University

基　　金：广东省科技计划项目(2004B33301012);国家自然科学基金重点项目(40235054)

摘　　要：运用基于模拟人体生理溶液的体外试验,研究了铅(Pb)污染城市土壤加入磷矿粉、过磷酸钙、骨粉、蛭石、沸石、膨润土后土壤Pb的生物可给性的变化.结果表明:加入不同的含磷和黏土矿物改良剂后,模拟胃和小肠阶段的Pb的生物可给性降低,含磷改良剂处理降低幅度大于黏土矿物处理.加入w=2%的骨粉效果最佳,在模拟胃和小肠阶段Pb的生物可给性分别降低了20.64%和57.94%.Physiologically based in vitro test was used to study Pb bioaccessibility change in Pb-contaminated urban soil after the addition of phosphate rock, single super-phosphate, bone meal, vermiculite, zeolite and bentonite in this paper. The results indicated the Pb bioaceessibility in the gastric and small intestinal phase decreased to some extent after the addition of different amendments; the addition of Pcontaining amendments was found to reduce Pb bioaccessibility more effectively than clay mineral amendments. The addition of 2% bone meal was the best treatments and the Pb bioaccessibility decreased by 20. 64% in the gastric phase and 57.94% in the small intestinal phase.

关 键 词：铅 化学修复 体外试验 城市土壤 

分 类 号：X53[环境科学与工程—环境工程]