菜园土壤和蔬菜中Pb,Cd,Hg和As的质量分数及相关性研究  

On Contents of Pb,Cd,Hg and As in Vegetables and Soil and Their Relations

作　　者：黄朝冉 江玲[1] 徐卫红[1] 王卫中[1] 陈永勤[1] 迟荪琳 陈序根 熊治庭[2] 张进忠[1] 王正银[1] 谢德体[1] 

机构地区：[1]西南大学资源环境学院,重庆400716 [2]武汉大学资源环境科学学院,武汉430079

出　　处：《西南师范大学学报（自然科学版）》2016年第11期40-48,共9页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(20477032);现代农业产业技术体系建设专项项目(Nycytx-35);国家科技支撑计划项目(2007BAD87B10);西南大学大学生科技创新"光炯"培育项目(20150102)

摘　　要：研究了重庆市某4个农贸市场市售3大类19种蔬菜73个样品中Pb,Cd,Hg和As质量分数以及某13个蔬菜基地土壤和蔬菜的重金属Pb,Cd,Hg和As质量分数及相关性.结果表明,农贸市场蔬菜中重金属污染大小顺序为Cd>Pb>As>Hg,Pb、Cd污染最为严重的是葱蒜类,As污染最为严重的是根茎类.重庆市某13个蔬菜基地不同蔬菜中重金属污染大小顺序为As>Cd>Hg>Pb.叶菜类蔬菜中Cd,Hg的质量分数显著高于其它类蔬菜,而Pb和As的质量分数以根茎类远高于其它类蔬菜.蔬菜中Cd质量分数与土壤中Cd质量分数之间的正相关分析结果有统计学意义,线性方程为y=0.065+0.012x(p<0.01).Heavy metals Pb, Cd,Hg and As contents of vegetables （ 3 types, 19 species and 73 samples） in 4 main trade markets of agriculture in Chongqing have been investigated. The contents of heavy metals Pb, Cd, Hg and As in vegetables and soils, and the correlation of them in 13 main vegetable bases also been studied. The results show that significant differences of heavy metals contents are in different species vegetable of trade markets of agriculture and different vegetable bases in Chongqing, i. e. , Pb content of the order is rhizome vegetables （X= 0. 224 mg/kg） gallium vegetables （X = 0. 179 mg/kg）〉leaf vegeta-bles （X=0. 174 mg/kg） 〉solanaceous vegetables （X=0. 103 mg/kg） ; Cd content of the order is rhizome vegetables （X=0. 118 mg/kg） 〉allium vegetables （X=0. 107mg/kg）〉leaf vegetables （X=0. 102 mg/kg）〉s〇 - lanaceous vegetables （X=0. 093 mg/kg） ; Hg content of the order is rhizome vegetables （X=0. 004 mg/kg） 〉leaf vegetables （X=0. 003 mg/kg） 〉allium vegetables （X= 0. 002mg/kg） 〉solanaceous vegetables （X〈0. 001 mg/kg）; As content of the order is rhizome vegetables （X= 0. 039 mg/kg） 〉leaf vegetables （X = 0. 023 mg/kg） gallium vegetables （X=0. 022mg/kg） = solanaceous vegetables （X = 0. 022 mg/kg）. Pb content of the order is rhizome vegetables （X = 0. 203 mg/kg） 〉leaf vegetables （X = 0. 065 mg/kg） 〉solanaceous vegetables （X=0. 004 mg/kg） ; Cd content of the order is leaf vegetables （X=0. 090 mg/kg）〉solanaceous vegetables （X = 0. 061 mg/kg）〉rhizome vegetables （X = 0. 0. 049 mg/kg） ; Hg content of the order is leaf vegetables （X= 0. 004 mg/kg） 〉rhizome vegetables （X= 0. 003 mg/kg） 〉solanaceous vegetables （X = 0. 001 mg/kg） ; As content of the order is rhizome vegetables （X=0. 116 mg/kg）〉solanaceous vegetables （X= 0. 057 mg/kg） 〉leaf vegetables （X = 0. 026 mg/kg）. Significant linear correlation of Cd contents is found between vegetables a

关 键 词：蔬菜 土壤 重金属质量分数 污染指数 相关性 

分 类 号：X53[环境科学与工程—环境工程]