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当前位置: 首页 > 文章 > 珠江口海水化学要素分布和水质特征 海洋湖沼通报 2012 (3) 162-174
Position: Home > Articles > THE DISTRIBUTION OF SEAWATER CHEMICAL ELEMENTS IN PEARL RIVER ESTUARY AND SEAWATER QUALITY ASSESSMENT Transactions of Oceanology and Limnology 2012 (3) 162-174

珠江口海水化学要素分布和水质特征

作  者：
黄向青;林进清;张顺枝;梁开
单  位：
国土资源部广州海洋地质调查局
关键词：
河口;化学要素;分布;水质
摘  要：
2003-2005年在同一时段5～6月,在珠江口按年度分区进行了地质环境综合调查,其中包括海水取样和样品测试,测试项目有理化常规、营养盐、有害重金属等。对样品测试结果的分析表明,珠江口化学要素分布是来源、水体运动、迁移等一系列过程的最终反映,各要素分布的变异性差别较大;存在季节性低氧区,与受到污染或以南陆架盐水入侵有关;大量的径流输入使得NO3-N和硅酸盐含量很高,营养盐类型为磷限制型,氮硅比例则比较适宜;局部有害重金属Pb、Zn、Hg含量较高,与径流输入和沿岸排污直接有关,底床细颗粒沉积物受到扰动的二次释放对水体也有所贡献;硫化物对海水形成了一定程度的污染,局部石油类污染也需要引起关注,无机氮污染尤其严重,反映出人类以不同方式和途径影响着珠江口。最后,讨论了海水与表层沉积物化学要素的相互关系,进行了水质综合评价。
译  名：
THE DISTRIBUTION OF SEAWATER CHEMICAL ELEMENTS IN PEARL RIVER ESTUARY AND SEAWATER QUALITY ASSESSMENT
作  者：
HUANG Xiangqing,LIN Jinqing,ZHANG Shunzhi,and LIANG Kai(Guangzhou Marine Geological Survey,MLR,Guangzhou 510760,China)
关键词：
estuary;chemical element;distribution;water quality
摘  要：
The seawater samples in Pearl River Estuary were collected during May-June of 2003-2005 respectively,and the chemical elements including nutrients and harmful metals and their concentrates were analyzed in lab under state standard.The data shows that the element distribution is the overall results of source,phase transport and tidal and runoff interaction.There were low oxygen areas in this estuary which had a relation with pollution and salty water intrusion from continent shelf.NO3-N and SiO3-Si concentrations were high for the reason of runoff and nutrients were phosphate limited type.Local heavy metals Pb,Zn,and Hg were relatively in abundance for runoff and bottom sediment release.The relation between elements in seawater and bottom sediment also was discussed and finally seawater quality assessment made based on above study and state standard.

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