The Enrichment of Cu、Zn、Pb、Cr and Ni in Mollusc in the Tidal Flat of Yangtze Estuary(Chinese)
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摘要: 调查研究了长江口沿岸5个采样点软体动物体内Cu、Zn、Pb、Cr、Ni的含量.结果显示：软体动物富集的重金属含量差别较大，Cu、Zn含量高，在各采样点的平均值达到354.6mg/kg和186.3mg/kg,其它元素含量低；软体动物富集重金属的能力差别也较大，富集总量的排列顺序是泥螺(763.8mg/kg)河蚬(603.6mg/kg)缢蛏(455.9mg/kg)；对河蚬不同部位的重金属含量进行分析，发现大部分重金属都集中在肉质部中.用金属污染指数(MPI)比较芦潮港、浒浦、顾路及崇明东滩四点河蚬体内的重金属含量，结果显示芦潮港与浒浦河蚬体内重金属污染最严重.Abstract: The concentration of Cu, Zn, Pb, Cr, Ni in mollusc in five sampling sites along Yangtze estuary was studied. The result shows that the concentration of heavy metals in different kinds of mollusc is different and the concentration of Cu and Zn is higher than that of the other three elements.The average concentration of Cu and Zn is 354.58 mg/kg and 186.25 mg/kg.The enrichment capability of different mollusc is discrepant. The order of gross concentration shows that Bullacta exarata (763.81 mg/kg) is higher than Corbicula fluminea (603.57 mg/kg) and Sinonovacula constricta (455.85 mg/kg). When analyzing the different enrichment capability of different parts of Corbicula fluminea we find most heavy metals concentrate on muscle. At last we use Metal Pollution Index (MPI) to compare the concentration of heavy metals in Corbicula fluminea of Luchao Port, Xupu, Gulu and eastern Chongming tidalflat. The result shows that the pollution of Corbicula fluminea in Luchao Port and Xupu is the most serious.
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Key words:
- Yangtze estuaryheavy metalsmolluscenrichment /
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