摘要
通过对长春市西湖灌区62个样点土壤砷含量的调查，评价该区域砷的污染状况。方法选择灌区稻田地、菜地、玉米地，以未利用土地为对照，采集耕层土壤样品，测定砷的含量，结果与吉林省土壤背景值比较，利用污染累积指数法评价砷的污染程度。结果未利用地砷含量（P〈0．05）与吉林省土壤背景值（8．38mg／kg）没有显著差剐；稻田、菜地、玉米地耕层土壤砷的算术平均值分别为12．79mg·kg^-1、11．96mg·kg^-1、11．19mg·kg^-1，明显高于吉林省土壤砷的背景值；三种土地利用方式下土壤砷的污染累积指数范围在1．90-1．17之间，并且土壤累积指数随着距污灌渠（口）距离的增大而减小。结论长期利用污水灌溉，导致砷在长春市西湖灌区耕层产生累积．土壤受到一定程度的污染。应当引起关注。
Objective The objective is to evaluate the arsentic pollution in the region of West Lake Irrigation District in Changchun city through the investigation of 62 samples of soil arsentie content. Method Tithe method is to compare the rice field, the vegetable field and the corn field with the unexploited land. Sample the topsoil, measure levels of arsentic and compare it with the arsentie background value of soil in Jilin Province. Evaluate the arsentic pollution level by using the method of cumulative pollution index. Results The results are as follows： there is no obvious difference in arsentie level between the unused land（ P 〈 0.05） and the arsentic background value of soil in Jilin Province （8.38mg·kg^-1 ）. The average soil asentie levels of the rice field, the vegetable field and the corn field are 12. 79 mg·kg^-1,11.96 mg/kg and 11.19 mg/kg respeetively, which are obviously higher than the arsentie background value of soil. The cumulative pollution index of these three kinds of field is between 1.90 and 1.17,and the soil cumulative index is decreasing when the distance from sewage mouth is increasing. Conclusion The conclusion is that the pollutant arsentic in West Lake Irrigation of Changchun City is cumulated because of the long - term use of sewage for irrigation. The soil is subjecting to a certain degree of pollution, which should cause for concern.
出处
《环境科学与管理》
CAS
2009年第12期180-182,共3页
Environmental Science and Management
关键词
灌区
土壤
砷污染
调查
评价
irrigated area,soil, arsenic pollution, surveys, evaluation
