天津市驴驹河海岸生境修复示范区环境质量评价

Environmental Quality Evaluation on the Habitat Repairing Section of Tianjin Seashore near Lieju River

通过2003年对天津市驴驹河海岸近海海域16个站位、5个断面的水质及表层沉积物中有机碳、油类、总氮、总磷、Cu、Zn、Pb、Cd、Cr、Hg、As等含量分析,并按照我国有关的海洋环境质量标准,采用质量指数法分级评价了驴驹河海域的环境质量。结果表明:本海域环境质量总体较好,但个别污染指标对该海域的环境影响值得关注。水质中主要污染物是石油类物质和汞,其次是无机氮,其平均值分别为134.93μg/L,0.64μg/L、99.07μg/L均超出一类水质标准。表层沉积物中主要污染物是石油烃,平均值为555.82μg/g,其次个别站位受到As的轻微污染。

The contents of organic carbon, oil, total nitrogen, total phosphorus, Cu, Zn, Pb, Cd, Cr, Hg and As of the water and surface layer sediment of 16 stations and 5 break sides of Tianjin Seashore near Lieju River were analyzed at 2003. The environmental qualities of this sea area were graded and evaluated using quality exponential method simultaneity according to relating criterions. The results indicated that the qualities of thes sea area were totally preferably but the infection of some exceptional pollution index deserved attention. The main pollutions of the water were oil and Hg, the next is inorganic carbon. Their average values were 134. 93ug/L, 0. 64ug/L and 99.07ug/L separately, and all overstepped the criterion of the first level water quality. The main pollution of surface layer sediment was oil hydrocarbon and the average value was 555.82ug/g. Few station was polluted by As.