佛山市郊污灌菜地土壤和蔬菜的重金属污染状况与评价  

The Investigation and Evaluation of Heavy Metal Pollution in Wastewater Irrigated Soils and Vegetables in the Suburb of Foshan

作　　者：李梅[1] 吴启堂[2] 李锐[1] 聂呈荣[1] 梁嘉瑞[1] 欧阳凤梅[1] 陈彩凤[1] 

机构地区：[1]佛山科学技术学院生命科学学院,广东佛山528231 [2]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》2009年第2期19-21,共3页Journal of South China Agricultural University

基　　金：国家自然科学基金(40571141);广东省科技计划项目(2006A20601001,2007A032303001)

摘　　要：对佛山市郊5个镇污灌菜地灌溉水、土壤和蔬菜的重金属污染状况进行了调查分析.结果表明,污灌菜地土壤重金属污染比较严重,其主要污染物是Hg和Cd,超标率分别是93.88%和12.24%,有77.5%的土壤综合污染指数大于1;所产叶菜除Hg含量全部符合无公害蔬菜标准外,Cr、Pb、Cd均有不同程度超标,超标率分别是28.57%、14.29%和21.43%.The heavy metals pollution on soils and vegetables for some sewage-irrigated vegetable bases in the suburb of Foshan were investigated. The results showed that the heavy metal contamination in soils of the suburb of Foshan was serious. The contents of Hg and Cd exceeded 93.88% and 12. 24% respectively in the collected soil samples, comparing to the Grade II limited values of the national soil environment quality standard. The comprehensive pollution indexes of 77.5% of the soils were greater than 1. The leaf vegetables grown in these fields were suffered from the pollution of Cr, Pb and Cd to a different extent, except heavy metal Hg. The contents of Cr, Pb and Cd exceeded 28.57%, 14.29% and 21.43% respectively in comparison with pollution-free food standard.

关 键 词：土壤 蔬菜 重金属污染 评价 佛山市郊 

分 类 号：S181.3[农业科学—农业基础科学]