崎岖列岛附近海域环境质量现状评价与分析

Present assessment and analysis of environment quality in sea area near Qiqu Archipelago

根据 2 0 0 1年 2月和 7月对崎岖列岛附近海域的水质和底质表层沉积物调查结果 ,采用环境质量单项评价标准指数法 ,对该海域环境质量现状进行了评价与分析。结果表明 :(1 )该海域水质的 p H值、溶解氧和石油类等环境因子基本符合一类海水水质标准 ,化学需氧量、活性磷酸盐和无机氮浓度则超标严重 ,该海域水质已处于严重富营养化状态 (夏季比冬季富营养化程度略低 ) ;(2 )该海域底质表层沉积物中除部分站位的重金属 Cu、 Zn含量超标外 ,有机质、石油类和重金属 Pb、 Cd、 Hg的含量均未超标 。

The current environment quality of water and sediment in sea area near Qiqu Archipelago was investigated in February and July, 2001. Environment quality standard index method is adopted to assess environment quality conditions in the sea area. The results show that pH,DO and Oil almost coincide the first grade sea water quality standard, but COD, PO-4-P, TIN severely exceed the standard. The water quality appeared in the severe eutrophication state. Organic material, oil, Pb, Cd and Hg in sediment don't exceed sediment quality standard. 20% Cu values and 15% Zn values exceed sediment quality starard.