摘要
[目的 ]探讨菜园土壤重金属污染状况。 [方法 ]测定了 6 0份土壤样品中锌、铜、锌污染水平。 [结果 ]黄松土的全 Zn、全 Cu、全 Pb含量在 97.5～ 2 86 .8mg/kg、 7.3～ 2 0 5 .5 mg/kg、 38.8～ 98.4mg/kg之间 ,江涂土在 75 .5～ 30 2 .0 mg/kg、 4.3～ 143.5 mg/kg、 13.9～ 87.8mg/kg之间 ,粉泥土在 89.5～ 15 0 .3mg/kg、 15 .5～ 43.0mg/kg、 2 7.8～ 5 8.1mg/kg之间 ,其最大值均超过污染标准 (自然土壤的背景值× 1.5 )。锌、铜、铅复合污染土壤样品占全部样品的 6 5 % ,且三者有很高的相关性。 [结论 ]城市垃圾、污泥等复合型污染源的控制已十分必要。三种菜园土壤的锌、铜、铅含量的变异系数均较大 。
Objective]To study the pollution of heavy metals in vegetable farm soils [Methods]The levels of zinc,copper and lead in 60 soil samples obtained from vegetable farm in suburb of Hangzhou were detected [Results]The levels of total zinc,total copper and total lead were 97 5~286 8 mg/kg,7 3~205 5 mg/kg and 38 8~98 4 mg/kg in fluvio marine yellow loamy soils;75 7~302 0 mg/kg,4 3~143 5 mg/kg,and 13 9~87 8 mg/kg in fluvio marine polder soils;89 5~150 3 mg/kg,15 5~43 0 mg/kg and 27 8~58 1 mg/kg in aquic silt loamy soils The maximum levels of observed three elements all exceeded the polluted standards,which were 1 5 times of the natural background values of soil 65% of total soil samples presented complex pollution of above 3 elements,the levels of which showed significant correlation between each others [Conclusion]It was essential to control the complex pollution sources,such as city rubbish and sludge The higher cofficients of variation for the levels of zinc,copper and lead in three kinds of soil predicted the existences of some point polluted sources
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2000年第3期165-166,共2页
Journal of Environment and Health
