胶州湾水体镉的分布及来源  

The Source and Distribution of Cadmium in Jiaozhou Bay

作　　者：杨东方[1,2] 陈豫[3] 常彦祥[4] 刘春秀[5] 翁怡婵[6] 

机构地区：[1]上海海洋大学生命学院,上海201306 [2]国家海洋局北海环境监测中心,山东青岛266033 [3]上海海洋大学信息学院,上海201306 [4]温州医科大学信息与工程学院,浙江温州325035 [5]国家海洋局烟台海洋环境监测中心站,山东烟台264006 [6]国家海洋局闽东海洋环境监测中心站,福建宁德352100

出　　处：《海岸工程》2013年第3期68-78,共11页Coastal Engineering

基　　金：国家海洋局海洋溢油鉴别与损害评估技术重点实验室基金资助--溢油鉴定技术评估(07EMC08);国家海洋局北海监测中心主任科研基金资助--长江口;胶州湾;莱州湾及其附近海域的生态变化过程(05EMC16)

摘　　要：根据1980年的胶州湾水域调查资料,分析了重金属Cd在胶州湾水域的水平分布、垂直分布和季节变化以及来源.研究结果表明:在整个胶州湾水域,1年中Cd质量浓度的变化范围为0.00～0.48 μg/L,都符合国家一类海水水质标准(1.00 μg/L),整个胶州湾水域水质没有受到任何Cd的污染.在胶州湾水域只有1个来源:是湾口外的水域,整个胶州湾水域的Cd表层水平分布展示了海流输送Cd到胶州湾的湾口外、湾口以及湾口内的水域.海流的输入Cd的质量浓度为0.00～0.48 μg/L,胶州湾水域Cd的环境本底值为0.00～0.48 μg/L.Cd垂直分布展示了:在春、夏、秋季,Cd的表、底层都相近;Cd表层、底层质量浓度的季节变化都形成了春、夏、秋季的一个峰值曲线.Cd底层水平分布展示了:在6、7、9和10月,Cd的底层质量浓度都是湾外高,湾内低.而且,在海流输送Cd的过程中,沿着海流进入了胶州湾水域的路径,Cd的表层质量浓度比底层质量浓度高,在海洋输送的路径周围水域,Cd的表层质量浓度一直都比底层质量浓度低.Based on data from the investigation in Jiaozhou Bay waters in 1980,the horizontal and vertical distribution,and seasonal variation of Cd in surface and bottom in Jiaozhou Bay are analyzed.The results showed that in the whole waters of Jiaozhou Bay,the change range of the Cd content was 0.00~0.48μg/L,which meets the national GradeⅠof marine water quality standards(1.00μg/L).So,the water quality was not polluted with Cd.There was only one source of Cd in the Jiaozhou Bay and its mouth waters,which came from the waters outside its mouth.And the horizontal distribution showed that Cd in the seawater was transported to the waters outside its mouth,its mouth waters and the waters inside its mouth.Moreover,the Cd content from the marine current was 0.00~0.48μg/L,and the environmental background value of Cd in Jiaozhou Bay was 0.00~0.48μg/L.It is found that the Cd contents in surface and bottom layers were closed.The seasonal change of the Cd contents in surface and bottom layers both presented the peak curves of the spring,summer and autumn.The horizontal distribution of the Cd content in bottom layer showed that it was high outside the bay and low inside one in June,July,September and October,respectively.Furthermore,in the transportation process of Cd in marine current,the Cd content in surface layer was higher than in bottom one along the path of the marine current into the Jiaozhou Bay.In the waters around the path,it in surface one was lower than in bottom one.

关 键 词：重金属CD 分布 来源 迁移 胶州湾 

分 类 号：P951[天文地球—自然地理学]