摘要
为调查太原市小店污灌区农田重金属和多环芳烃的污染状况，研究测定了45个土壤样品Ph，cd，Cr，Hg，As以及PAHs的含量，并采用潜在生态风险评价的方法进行评价。结果表明，与背景值相比，小店污灌区土壤普遍存在污染现象，土壤中As，Hg，Cd，Cr，Ph和PAHs最高含量分别是背景值的5．46，9．71，11．72，2．26，2．74，23．87倍；利用潜在生态危害指数法评价得出，Hg，Cd为小店污灌区主要危害因子，单因子潜在生态危害系数在120—320之间；小店污灌区的潜在生态危害指标为371．48，为较强生态危害。
45 soil samples in farmland collected from Xiandian sewage irrigation area in Taiyuan were monitored for the contents of Pb, Cd,Cr, Hg, As,PAHs and analyzed by the potential ecological risk assessment method. The resuh indicates that the maximum contents of As, Hg, Cd, Cr, Pb and PAHs were 5.46,9.71,11.72,2.26,2.74 and 23.87 times higher than the soil background values. The single potential ecological risk index ranged between 120 and 320. The ecological risk of Xiaodian sewage irrigation is serious, with the potential ecological risk index of 371.48, which was ranged as strong ecological risk.
出处
《山西农业科学》
2013年第10期1085-1088,共4页
Journal of Shanxi Agricultural Sciences
基金
山西省科技攻关项目(20110311021)
关键词
污灌区
农田土壤
重金属
多环芳烃
sewage irrigation area
farmland soil
heavy metal
PAHs
