闽江口-马祖海域表层沉积物及沿岸养殖区生物体中Cu,Pb,Zn,Cd的含量分布

１９９５年１０月和１９９６年４月调查闽江口－马祖海域表层沉的中重金属Ｃｕ，Ｐｂ，Ｚｎ，Ｃｄ的含量，结果表明：９５年１０月所采集的表层沉积物的样品重金属Ｃｕ，Ｐｂ，Ｚｎ，Ｃｄ的平均浓度分别为２６．６，３６．７，９８．７，。０．１４４ｍｇ／ｋｇ；而９６年４月Ｃｕ，Ｐｂ，Ｚｎ，Ｃｄ的平均浓度则分别为２７．９，４３．７，１００．３，０．１６４ｍｇ／ｋｇ，两航次的测定结果上近，根据底质评价标准，Ｐｂ，Ｚｎ明

Concentrations and Distributions of Cu,Pb,Zn,Cd in Surface Sediments of Waters and Bivalves of Aquatic Area in Minjiang Estuary and Mazu

The concentrations of Cu,Pb,Zn,Cd in surface sediments of Minjiang Mazu Waters were investigated during Oct., 1995 and Apr., 1996. The mean concentrations of Cu,Pb,Zn,Cd were 26.6, 36.7, 98.7, 0.144 mg/kg, respectively in Oct., 1995 and those in Apr., 1996 were 27.9, 43.7, 100.3, 0.165 mg/kg, respectively; the concentrations of Zn and Pb exceeded the value of assessment criteria. For the surface distributions, the highest of Cu,Pb,Zn,Cd were found at station MJ6 in Minjiang River estuary during two cruises. From station MJ6 to stations MJ5 and MJ8 near the open sea, the concentrations had a decreasing trend and elevated at stations MJR2 and MJR1 which are close to the Mazu area, suggesting that Cu,Pb,Zn,Cd at stations MJR1 and MJR2 may come from both the Minjiang river and Mazu area. The concentrations of Cu,Pb,Zn,Cd in bivalves of aquatic area in Minjiang Estuary were investigated and compared with the surface sediments. The kinds and periods grown of bivalves are preliminarily discussed.