摘要
为了解白银郊区蔬菜基地土壤重金属的污染特征,对白银市郊的大坝滩、水川、四龙和百湾4个蔬菜基地土壤中重金属进行了调查和采样分析,样品处理采用三酸消解法和微波消解法,用原子吸收分光光度计法测定了土壤和蔬菜样品中Cd、Pb、Zn、Cr和Cu的含量,依据土壤环境质量标准(GB15618 1995)、蔬菜基地土壤环境质量限值(HJ333 2006)和土壤重金属污染累积指数进行初步评价,结果表明:白银郊区大坝滩蔬菜基地土壤中重金属Cd污染严重,不适合发展蔬菜种植,其他3个蔬菜基地重金属污染程度均为安全,污染水平均为清洁,适合于发展蔬菜种植。
To investigate heavy metal contamination status of vegetable base soil in suburb of Baiyin city,the experiment surveyed the soil of four vegetable bases,Dabatan,Shuichuan,Silong and Baiwan.The collected soil and vegetable samples were processed using three acid digestion and microwave digestion methods,and then the contents of Cd,Pb,Zn,Cr and Cu were tested by atomic absorption spectrophotometer.According to the soil environment baseline in HJ3332006,national soil environmental quality standard GB156181995 and soil heavy metal pollution accumulation index,the pollution of heavy metal Cd was serious in Dabatan vegetable base soil,not suitable for development of vegetable growing,but the degree of heavy metal contamination in other areas was safe,and the pollution level was clean,suitable for development of vegetable growing.
出处
《河南农业科学》
CSCD
北大核心
2012年第6期80-83,共4页
Journal of Henan Agricultural Sciences
关键词
蔬菜基地
土壤
重金属含量
评价
vegetable base
soil
heavy metal content
evaluation
