Polychlorinated biphenyls in the Nanshan Underground River,China  

作　　者：Alam Md.Jahangir YUAN Daoxian JIANG Yongjun SUN Yuchuan LI Yong XU Xin 

机构地区：[1]School of Geographical Sciences,Institute of Karst Environment and Rock Desertification Rehabilitation,Southwest University

出　　处：《Chinese Journal Of Geochemistry》2013年第4期357-366,共10页中国地球化学学报

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.41172331);the Academician Foundation of Chongqing(CSTC,2010BC7004);Geological survey project of Ministry of Land and Resources of China(1212011087119)

摘　　要：Abstract Karst areas have much higher ecological vulnerability and are easy to be contaminated by polychlorinated biphenyls(PCBs) which are introduced as health risk pollutants.PCBs concentrations were used to understand the transport behavior of PCBs conducted in the karst Nanshan Underground River,China.Water and sediments from the underground river water,and sediments and soil from the surface of the corresponding watershed were collected monthly in 2011 and 2012 and PCBs were analyzed.Seasonal variations were found in concentrations of PCBs both in the waters and sediments.PCBs concentrations varied from 0.3 to 29.9 ng·L-1 in the groundwater,while from 0.1 to 366.1 ng·g-1 in the underground sediments.Correlations were found in concentrations of PCBs in waters and sediments between the underground river and surface systems which indicate that the surface systems play a major role for the transport of PCBs and contamination in the underground river systems.Karst features are liable for the transport behavior.The underground river waters transport PCBs at mean 3 g·day-1.Karst areas have much higher ecological vulnerability and are easy to be contaminated by polychlori- nated biphenyls （PCBs） which are introduced as health risk pollutants. PCBs concentrations were used to understand the transport behavior of PCBs conducted in the karst Nanshan Underground River, China. Water and sediments from the underground river water, and sediments and soil from the surface of the corresponding watershed were col- lected monthly in 2011 and 2012 and PCBs were analyzed. Seasonal variations were found in concentrations of PCBs both in the waters and sediments. PCBs concentrations varied from 0.3 to 29.9 ng＇L1 in the groundwater, while from 0.1 to 366.1 ng＇g1 in the underground sediments. Correlations were found in concentrations of PCBs in waters and sediments between the underground river and surface systems which indicate that the surface systems play a major role for the transport of PCBs and contamination in the underground river systems. Karst features are liable for the transport behavior. The underground river waters transport PCBs at mean 3 g＇day1.

关 键 词：地下河系统 多氯联苯 南山 中国 水沉积物 交通行为 表面系统 生态脆弱性 

分 类 号：X523[环境科学与工程—环境工程]