珠江三角洲典型地区蔬菜重金属污染现状研究——以中山市和东莞市为例  

Investigation of heavy metal pollution in vegetables in the Pearl River delta: A case study of Zhongshan and Dongguan

作　　者：黄勇[1] 郭庆荣[2] 任海[1] 杨国义[2] 万洪富[2] 罗薇[2] 

机构地区：[1]中国科学院华南植物园,广东广州510650 [2]广东省生态环境与土壤研究所,广东广州510650

出　　处：《生态环境》2005年第4期559-561,共3页Ecology and Environmnet

基　　金：国家环保总局项目(2001-1-2);广东省环保局项目(2001-08)

摘　　要：以珠江三角洲典型地区中山市与东莞市为研究对象,通过对其大型蔬菜生产基地中10种蔬菜76个样品中重金属元素铬、铅、镉和汞的含量进行分析,初步摸清了珠江三角洲典型地区中山市与东莞市蔬菜中的重金属污染状况,并在不同城市不同蔬菜品种之间的污染程度进行了比较。结果表明,蔬菜中铬、铅、镉、汞的平均含量分别为0.1719、0.0962、0.0257和0.0014mg/kg,其中铬、铅、镉含量超出了国家卫生标准的允许量的蔬菜样品分别有1.3%、13.2%与13.2%;4种重金属在10种蔬菜中的平均残留量由大到小依次为:铬→铅→镉→汞;铅、镉是珠江三角洲典型地区中山市与东莞市蔬菜中的主要污染元素。Based on the investigation of heavy metals （chromium, lead, cadmium, mercury） in some popular vegetables, the contents of the four heavy metals were detected in 10 kinds of vegetables and 76 samples from the vegetables production base in Zhongshan and Dongguan, China. We had done some comparison among different vegetables,and we also had done some comparison between the two city. The results showed that Cr, Pb, Cd and Hg average contents in edible parts orvegetables are 0.171 9, 0.096 2, 0.025 7 and 0.001 4 mg/kg respectively; and the ratio of vegetable samples that Cr, Pb and Cd in vegetable samples exceeded the permitted level to the total vegetable samples is 1.3%,13.2% and 13.2% respectively, Pb and Cd are the major pollutant elements in Zhongshan and Dongguan. At last, factors influencing the heavy metals pollution and controls in vegetables are discussed.

关 键 词：蔬菜 重金属污染 珠江三角洲 中山市 东莞市 

分 类 号：X53[环境科学与工程—环境工程]