中文摘要：

基于2007年5月和1998年5月对江苏近海的水环境调查结果,统计分析了海州湾、辐射沙洲和长江北支等不同海域的水质状况,并对海水中部分重要水质指标含量的差异性进行了详细的对比分析.结果表明：汞在各海域的均值浓度可达到国家二类海水水质标准,但是2007年汞的0.1μg/L质量浓度包络线范围明显大于1998年;除了海州湾地区外,其余海域的油类浓度增大;除北部局部海区,2007年的溶解氧浓度基本高于1998年;2007年总磷浓度在近岸区有所降低,但近海海域的总磷污染范围增加较为明显.

英文摘要：

Based on the results of the investigation into the water environment in the offshore areas in Jiangsu Province in May,2007 and May,1998,the water qualities in different coastal regions including the Haizhou Bay,the radial sand ridges,and the north branch of the Yangtze River were analyzed,and the differences in the content of the main water quality indices in the sea for these regions were compared in detail.The results show that the average concentrations of mercury in all these coastal regions reach grade II of the national marine water quality standard.The range of the envelope curve for mercury with a concentration of 0.1 μg/L in 2007 was much larger than that in 1998.The oil concentrations in the coastal regions increased in 2007,except for the Haizhou Bay.The DO concentrations in most coastal regions were higher in 2007 than in 1998,except for part of the northern region.The TP concentrations in the inshore areas decreased in 2007,and their pollution ranges in the offshore areas increased significantly.