摘要
目的研究废旧变压器拆解埸多氯联苯(PCBs)对环境的污染情况。方法以F镇为暴露区Ⅰ;以无该产业、气候条件、地理特征等情况相似间邻的P镇为暴露区Ⅱ;并选择相距500公里外的DXG镇为对照区。随机分层抽取河水(溪水)、稻田土、晚稻谷、鸡(鸭)蛋、淡水鱼等样品,采用超痕量分析方法检测其PCBs含量。结果暴露区Ⅰ各样品中的PCBs含量均超过暴露区Ⅱ(除晚稻谷外)和对照区,三者差异在统计学上有显著的意义。其中,暴露区Ⅰ河鲫鱼的PCBs高达9.1ug/g,是河水的8000多倍,鸡蛋和鸭蛋的PCBs平均含量也高达1.08和0.89ug/g,是晚稻谷的19-21倍。结论F镇及P镇各类样品中的PCBs含量有不同程度的升高,并在生物体内有明显的富集趋势,废旧变压器拆解行业对当地及周边地区的次生环境已有造成污染的迹象。
Objective To investigate the second environmental pollution of polychlorinated biphenyls （PCBs） in an industrial place of disused transformer disassembly. Methods Town F was chosen as exposure area Ⅰ, and town P nearby chosen as exposure area Ⅱ, of which climate and geographical characters were similar with Town F. Town DXG that was 500 kilometers away was chosen as the control area. Water, soil of early and late paddy fields, chicken （duck） egg, and fish samples were randomly collected. PCBs levels were measured by ultratrace analysis. Results PCBs levels of samples in exposure area Ⅰ were higher than those of area Ⅱ （expect for late paddy） and the control area, and significant difference in statistics existed among these three areas. PCBs level of crucian in exposure area Ⅰ was 9. lug/g, which was 8000 times as high as that from the river. The average PCBs levels of chicken and duck eggs were 1. 08ug/g and 0.89ug/g respectively, which were 19-21 times as high as the samples from late paddy fields. Conclusions PCBs levels of different kinds of samples in Town F and town P increase and have an obvious richness tendency in organism. Industries of disused transformer disassembly pollute the local and neighboring secondary environment.
出处
《浙江预防医学》
2006年第4期1-3,共3页
Zhejiang Journal of Preventive Medicine
