安徽省泗县池塘底泥As含量分布特征及污染评价  

Distribution Characteristics and Pollution Evaluation of As in Ponds Sediment from Sixian County in Anhui

作　　者：许东升[1] 黄淑玲[1] 李琦[1] 

机构地区：[1]宿州学院地球科学与工程学院,安徽省宿州市234000

出　　处：《光谱实验室》2012年第2期1233-1237,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：安徽省高等学校省级自然科学重点项目(KJ2011A261);宿州学院一般科学研究项目(2011yyb08);宿州学院科研平台项目(2011YKF22)

摘　　要：利用X射线荧光光谱法测定了安徽泗县池塘底泥中As的含量,探讨其分布特征及来源并进行生态风险评价。结果表明:研究区池塘底泥As含量的变化范围在8—26mg/kg,平均值为13.32mg/kg;空间分布为:新集>黄圩>杨集>武圩>大庄>中心区;工业废弃物的排放以及含As养殖饲料的使用对底泥As富集的贡献显著;As的地累积指数(Igeo)范围在-0.66—1.05,为无污染到中度污染。长远来看,As累积趋势的存在,对土壤质量和农业安全生产具有一定的隐患。Concentrations,distribution characteristics,source and ecological risk assessment of As element in ponds sediment from Sixian county in Anhui were determined,analysed and evaluated by X-Ray fluorescence spectrometry.The results indicated that the range of As concentrations were between 8mg/kg and 26mg/kg in researched area,and the mean value was 13.32mg/kg.The space distribution of As concentrations from high to low was Xinji,Huangwei,Yangji,Wuwei,Dazhuang,and the middle area.Contamination of industry and the use of breeding fodder contributed to the enrichment of As in ponds sediment.The Igeo index of As was in the range of-0.66—1.05,which represented pollution-free to moderate pollution.There was the tendency existence of As accumulation in the long run,that had the certain hidden danger in soil quality and agricultural production safety.

关 键 词：泗县 池塘底泥 As含量 分布特征 生态风险评价 

分 类 号：X522[环境科学与工程—环境工程] O657.34[理学—分析化学]