不同钝化剂对土壤中Zn,Cd,Pb,As的钝化效果研究  

作　　者：王小雨 孙丽娜 吕良禾 李珍 时馨竹 

机构地区：[1]沈阳大学环境学院区域污染环境生态修复重点实验室,辽宁沈阳110044

出　　处：《环境保护与循环经济》2021年第5期52-58,84,共8页environmental protection and circular economy

基　　金：国家重点基础研究发展计划项目(2014CB441106)。

摘　　要：将过磷酸钙磷肥、石灰以及斑脱土3种钝化剂按不同配比混合制成不同的钝化剂组合,进行土壤原位钝化培养实验,并运用CaCl2-DTPA及0.1 mol/L的HCl溶液进行浸提,探究了不同钝化剂在0,30,60,90 d对污染土壤中Zn,Cd,Pb,As的钝化效果与特征。从对单一重金属在不同龄期时钝化效果以及同一龄期下复合重金属钝化效果及机理两方面,筛选出优势钝化剂。Three passivating agents of superphosphate phosphate fertilizer,lime and bentonite were mixed in different proportions to make different passivation agent combinations,and the soil in-situ passivation culture experiment was carried out,and CaCl2-DTPA and 0.1mol/L HCl solution were used for leaching.The passivation effects and characteristics of different passivators on Zn,Cd,Pb and As in contaminated soil were explored at 0 d,30 d,60 d,and 90 d.Furthermore,from the passivation effect of single heavy metals at different ages and the passivation effect of composite heavy metals at the same age,superior passivating agents were screened out.

关 键 词：复合重金属 污染土壤 钝化剂 不同龄期 

分 类 号：X53[环境科学与工程—环境工程]