广东沿岸海域生物可利用性重金属的地理分布

利用牡蛎做监测生物，研究了广东沿岸海域生物可利用性重金属Ｃｄ，Ｃｕ和Ｚｎ的地理分布。牡蛎体的Ｃｄ，Ｃｕ和Ｚｎ含量存在着显著的地域差异，反映了广东沿岸海域生物可利用性的Ｃｄ，Ｃｕ和Ｚｎ在地域上存在很大的梯度。由牡蛎显示出的广东沿岸海域生物可利用性重金属的地理分布与广东沿岸海域受人为来源的重金属输入状况相一致，如实地反映了广东沿岸海域重金属污染的基本特征。

Distributions of the Bioavailable Heavy Metals in the Coastal Waters of Guangdong Province

The distributions of the bioavailable heavy metals (cadmium, copper and zinc) in the coastal waters of Guangdong Province were discribed by oyster monitory. The spatical differences of the metal concentrations in the oysters were obvious. It shows the existence of large variability in the metal abundance and bioavailability in the coastal waters of Guangdong Province. The distribution of the metal bioavailability is accordant substantially with the inputs of the anthropogenic metals, The results reflect the characteristic of the overall heavy metal contamination in the coastal waters of Guangdong Province.