不同钝化剂对Cd污染土壤钝化效果及油菜中Cd含量的影响  

Effects of Different Passivation Agents on Cd Contaminated Soil and the Content of Cd in Rape

作　　者：许剑敏[1] 刘奋武[1] 

机构地区：[1]山西农业大学资源环境学院,山西太谷030801

出　　处：《山西农业科学》2016年第12期1799-1801,1826,共4页Journal of Shanxi Agricultural Sciences

基　　金：山西省自然科学基金项目(2015011022);山西农业大学校青年科技创新基金项目(J141502002)

摘　　要：采用盆栽试验,研究施加钝化剂海泡石、膨润土和鸡粪对Cd污染土壤的钝化效果以及对油菜中Cd含量的影响。结果表明,施加鸡粪可显著提高油菜地上生物量,施加海泡石、膨润土对油菜生物量无显著影响;施加海泡石、膨润土可显著提高土壤pH值,施加鸡粪可降低土壤pH值;施加钝化剂能显著降低土壤中有效态Cd含量及油菜地上部分Cd含量,有机无机钝化剂配施效果好于单施钝化剂处理,经处理,油菜中Cd含量符合《食品安全标准》(GB 2762—2012)规定的叶菜类0.2 g/kg的Cd浓度限值。The pot experiment was conducted to investigate the effects of applying chicken manure, sepiolite and bentonite on immobilization remediation of Cd contaminated soil. The results showed that applying chicken manure could significantly increase the biomass of rape, addition of sepiolite and bentonite had no significant effect on the biomass of rape. Applying chicken manure could reduce soil pH value, addition of sepiolite and bentonite could significantly improve soil pH value. Applying the passivation agent significantly decreased available Cd concentrations in soil and the content of Cd in rape, and combing applications of clays and chicken manure was better than that single passivation agent. In all immobilization treatments Cd concentration of rape was lower than the maximum level permitted by GB 2762-2012.

关 键 词：海泡石 膨润土 鸡粪 钝化 

分 类 号：X53[环境科学与工程—环境工程]