摘要
在面积为27 km^2的长江三角洲某典型污染地区用GPS定位系统布设了191个取样点,采用GC-ECD法测定了表层农田土壤16种多氯联苯组分及含量.统计结果表明,该典型区农田土壤16种多氯联苯总量变化范围是0.01--484.5 ng/g,平均值是35.52 ng/g,而且以三氯和四氯联苯为主（占55.7%）,同时也含有一定比例的五氯和六氯联苯（占44.3%）.空间分析发现,该区农田土壤中PCBs总量及其各同系物在所研究的尺度上存在较强的空间自相关格局,其PCBs的空间分布模式主要可能受到一些较为分散的人为因素影响,应重点对当地这些人为活动排污行业进行整治,以消除污染来源.
191 surface farmland soil samples were collected from an area of 27 km2 in typical polluted county of the Yangtze River Delta region and analyzed for concentrations of 16 kinds of polychlorinated biphenyls. The results of statistical analysis indicated that the concentrations of PCBs in the soils ranged from 0.01-484.5 ng/g, with the average concentration of 35.52 ng/g. In farmland soils tri- and tetra-chlorinated biphenyls were the main congeners, and some proportional penta- and hexachlorinated biphenyls also existed. The spatial analysis showed that the PCBs concentrations were stronger correlated in a given spatial range, and indicated that in the farmland soil PCBs spatial distribution pattern had an extent relationship with the activities of dismantling electronic wastes, burning plastic cable and line, wastewater irrigation and some pollution enterprises position in this typical region.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2008年第12期3477-3482,共6页
Environmental Science
基金
国家自然科学基金项目(40432005
40621001)
国家重点基础研究发展规划(973)项目(2002CB410809/10)
中国科学院知识创新项目(KZCX2-YW-404)
关键词
农田土壤
多氯联苯
半方差函数
空间分布
farmland soils
polychlorinated biphenyls
semivariance
spatial distribution
作者简介
滕应（1975-），男，博士，副研究员，主要研究方向为土壤环境微生物生态与生物修复，E-mail：yteng@issas．ac．cn
通讯联系人，E-majl：ymluo@issas．ac．cn
