新疆奎屯123团土壤砷污染研究

土壤砷污染是一种十分严重的环境问题。80年代初,新疆奎屯垦区发现了中国大陆第一个地方性砷中毒病区。本文主要以奎屯123团为研究区域,通过对该地区土壤中砷含量的测定,分析该地区土壤中砷的污染状况,砷的主要来源,探讨砷在土壤中的分布特征。结果表明奎屯123团0~20 cm土壤中砷的含量范围在8.36~39.63mg kg-1,算术平均值为16.67mg kg-1,高于全国的平均水平。土壤中砷的来源主要受自然因素的影响,同时也受到高砷地下水灌溉以及含砷农药、化肥等诸多人为因素的影响,砷在该地区土壤中的垂直变化没有呈现出统一的规律。

Arsenic Pollution of Soil in Kuitun No. 123 State Farm,XinJiang

Arsenic contamination in soil is a very severe environmental problem.In early 1980's,first endemic arsenics area was found in Kuitun reclamation area of Xinjiang,China.This paper mainly dealt with the arsenic pollution of soil in Kuitun No.123 State Farm by monitoring arsenic contents in the samples of soil and analyzing arsenic-pollution conditions within this area as well as its main origin,and then the distribution characteristics of arsenic in soil were discussed.The results showed that:the arsenic content in soil ranged between 8.36-39.63mg kg-1 and the arithmetic mean was 16.67mg kg-1,which was higher than the national average level.The arsenic in the soil was affected by not only natural causes,but also many human factors such as groundwater irrigation with high-concentration arsenic,pesticides and chemical fertilizers.