摘要
本项工作对沈阳市西部100km^2范围内的表层和底层土壤进行了环境地球化学研究，运用多种数理统计方法，求得本区15种元素的土壤背景值及其范围，依照单元素评价指数和综合评价指数对土壤的环境质量进行了评价，认为存在着严重的Cd、Pb、Zn、Cu、As、Sb、Hg等重金属元素的污染。污染区沿张士灌渠由上游至下游有不断扩大的趋势。造成污染的主要原因是长期污水灌溉，同时查明底泥是一种新的次生污染源。
:
Environmental geochemical studies were conducted for surficial and bottom
soils in an area of 100km^2 in the west of Shenyang City proper. Soil back-
ground values of fifteen elements in this district were obtained by means of
quite a few statistic techniques; environmental quality of soil was evaluated
according te single element assessment indices and integrated assessment
indices, and it is considered that there exists severe contamination from such
heavy metal elements as Cd, Pb, Zn, Cu, As, Sb and Hg. The contaminated area
tends to expand progressively from the upper to lower reaches of the Zhangshi
irrigation canal, and such contamination results mainly from long-time sewage
irrigation. It is also ascertained that bottom mud is a sort of new secondary
contamination source.
出处
《物探与化探》
CAS
CSCD
1991年第2期91-98,共8页
Geophysical and Geochemical Exploration
