某金矿排水渠附近土壤中4种重金属污染水平分析

以陕西省潼关县某金矿排水沟附近土壤为研究对象,对土壤中Rb、Sn、Sb和Cr 4种重金属含量进行了分析,为金矿周围土壤污染治理及人工生态修复提供依据.结果表明:在整个研究区内,Sn和Sb积累严重,其含量分别是国家背景值的47.7～52.9倍和112～124倍,在各样区变异系数较小,且分布特征相似,复合污染可能性较大;Cr在所有样区都有一定程度的积累,其含量是国家背景值的2.3～2.4倍,Rb含量低于国家背景值,尚属无污染.

Analysis on the soil pollution degree of four heavy metals along drainage ditch around gold deposit

The soil along drainage ditch around gold deposit in Tongguan County was chosen as the research object,the contents of four heavy metals,rubidium,stannum,stibium and chromium,in the soil were determined.The results showed that the accumulation of stannum and stibium were both very high and the average contents of them in sample region were 47.7~52.9 times and 112~124 times of the criteria of background concentrations.The variation coefficients of stannum and stibium in each sample region were low,and their distribution characters were similar,this was easy to cause combined pollution.The average content of chromium in each sample regions was 2.3~2.4 times of the criteria of background concentrations.The content of rubidium was lower than the criteria of background concentrations,and it not caused soil pollution yet.