In-situ Leaching-immobilization of Lead in Soilvegetable System Based on Coupling of Remediation & Production  

基于修复与生产耦合的菜地土壤铅原位淋洗-固化研究（英文）

作　　者：王莉玮 李燕燕[2] 代勇[2] 杨志敏[2] 陈玉成[2] 

机构地区：[1]重庆市农业环境监测站,重庆401121 [2]西南大学资源环境学院,重庆400716

出　　处：《Agricultural Science & Technology》2016年第9期2074-2077,2110,共5页农业科学与技术（英文版）

基　　金：Supported by Chongqing Key Technologies R&D Program(CSTC2011AC101);Technology Supporting Program in 2013 of Chongqing Agriculture Committee~~

摘　　要：[Objective] The aim was to seek effective soil remediation technologies suitable for soils slightly or moderately polluted. [Method] In-situ leaching-immobi- lization was used to research remediation soil and vegetable contaminated by lead in vegetable bases in Chongqing. [Result] By tartaric acid-based leaching-sodium sulphide-based immobilization, vegetable Pb reduction rate was 46.4%, soil Pb reduction rate was 8.45% and Pb immobilization rate was 9.3% in deeper horizons. EDTA leaching did reduce lead content in vegetables, but reduced vegetable yield simultaneously. [Conclusion] The coupling remediation technology brought heavy metal contents down in vegetables without affecting productions. Therefore, it guarantees vegetable safety and reduces vegetable farmer＇s economic loss. It is a remediation technology suitable for soils slightly or moderately contaminated by heavy metals.[目的]找寻适合于轻中度土壤污染的有效修复技术。[方法]采用原位田间试验,研究表层淋洗-深层固化对重庆市菜地土壤-蔬菜系统铅的耦合修复效果。[结果]酒石酸淋洗-硫化钠固化联合修复对蔬菜中Pb的削减率为46.4%,对表层土壤中Pb的削减率为8.45%,对深层土壤中Pb的固化率为9.3%。EDTA淋洗虽然可削减蔬菜中的铅含量,但同时也降低了蔬菜产量。[结论]耦合修复技术在不影响正常生产活动的同时,降低了蔬菜中的重金属含量,既能保证蔬菜的安全性,又能够尽量减少菜农经济损失,是一种适合于轻中度土壤重金属污染的修复技术。

关 键 词：VEGETABLES SOILS LEAD LEACHING IMMOBILIZATION 

分 类 号：X53[环境科学与工程—环境工程]