松花江哈尔滨江段表层沉积物中多氯联苯残留状况调查

摘要

Distribution characteristics,pollution status and source identification of residues of PCBs in surface sediment of Harbin section of the Songhua River are discussed. The results show that residues ofΣPCBs ranged 4.6-20.6ng/g, with an average value of 11.7ng/g. The average value is lower than the ISQG value of Canadian sediment quality guidelines for the protection of aquatic life. 3, 5, 6 chlorinebiphenyls are main pollutants. Source of pollution are mainly the upstream of Songhua River and city waste water.%本文对松花江哈尔滨江段沉积物中多氯联苯(PCBs)的残留现状进行调研,以揭示该江段PCBs的分布特征、污染程度及污染来源.结果表明,16个典型断面表层沉积物中PCBs总量变化是4.6-20.6ng/g,平均值为11.7ng/g,该平均值低于加拿大沉积物环境质量标准所给定的淡水沉积物ISQG值.以三、五、六氯联苯为主要污染物,污染源主要来自于松花江上游及城市废水.