摘要
根据1979年的胶州湾水域调查资料,分析重金属Cd在胶州湾水域的水平分布、垂直分布和季节变化。研究结果表明:在整个胶州湾水域,水质没有受到任何Cd的污染。在胶州湾和湾口水域只有两个Cd的来源。一个是来源于地壳岩石风化,通过陆地径流把重金属Cd注入胶州湾水域;另一个是来源于海底,经过海洋水流的作用把重金属Cd注入湾口水域。作者提出了重金属在水域的环境本底值结构:基础本底值、陆地径流的输入量和海洋水流的输入量,并且应用于胶州湾水域。作者认为在来源的迁移过程中,有陆地来源迁移和海底来源迁移。根据杨东方的水域迁移过程研究,陆地径流决定了Cd的表、底层质量浓度变化。
Based on data from the investigation in the Jiaozhou bay waters in 1979,the horizontal and vertical distributions,and the seasonal variation of the heavy metal Cd in the Jiaozhou Bay are analyzed.It is shown in the study results that in the whole Jiaozhou bay the water quality is clean without Cd pollution except a Cd source in the bay and another at the bay mouth.One of the sources is from the rock weathering at the earth surface,and then carried by the land runoffs into the bay.The another is from the sea bottom,and carried into the bay mouth by marine currents.A formnla for the Cd environmental value is given,to sum up the basic background value,the input amount by runoff and the input amount by marine current,and applied it to the bay.It is believed that both the land transfer and the marine bottom transfer are involved in the Cd transfer process.According to the studies by Yang Dongfang et al（200,2009）,the Cd Amount carried into a sea area by rivers is determinative for the Cd distributions at either the sea surface layer or the sea bottom layer.
出处
《海岸工程》
2010年第4期73-82,共10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--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--长江口
胶州湾
莱州湾及其附近海域的生态变化过程(05EMC16)
关键词
重金属CD
来源
环境本底值结构
迁移
胶州湾
heavy metal Cd
source
environmental background composition
transfer
the Jiaozhou Bay
