摘要
文章阐述了天津市不同地貌单元8个土壤剖面中重金属污染的纵向分布特征,并对土壤中重金属污染的形成原因进行了分析。结果表明,重金属元素随土壤质地不同而有所不同。镉、汞、铜、铅、锌等在城市附近污染比较重,污染主要集中在0～50cm土层内。污水灌溉、污泥施用和城市降尘是造成土壤多种重金属元素污染的主要原因。
The paper describes vertical distribution characteristics of heavy metal pollutants in soil profile for 8 landscape units in Tianjin and discusses the causes for pollution. Analytical results show that the heavy metals are varied with soil profiles. Soil profile near the city is heavierly polluted by Cd, Hg, Cu and Pb that are concentrated in a layer 0～50 cm thick. Land irragation of waste water and application of sludge to land and city dust pricipitation are the main causes for the heavy metal pollution.
出处
《地质找矿论丛》
CAS
CSCD
2004年第4期270-274,共5页
Contributions to Geology and Mineral Resources Research
基金
天津市矿产资源补偿费项目(津地任[2000]4号)资助。
关键词
天津
土壤剖面
重金属污染元素
纵向分布
soil profile
heavy metal pollution
vertical distribution
Tianjin
