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本文在综述国内外文献关于河口重金属入海通量的计算方法之四种计算方法的基础之上,根据珠江八大口门的径流的实际情况,选取“潮时入海通量计算方法1”和“潮时入海通量计算方法2”进行珠江河口Hg,Cu,Pb,Cd等重金属的入海通量研究,分别计算了其溶解态入海通量与颗粒态入海通量。根据珠江口的调查数据,分析计算研究而得出结论:珠江口重金属Hg,Cu,Pb,Cd之重金属溶解态通量通常小于颗粒态通量。文中针对河口水体重金属污染的防治对策,分为四个方面进行阐述:严格控制污染源的重金属排放,加强对污染源的治理,制订该地区海洋环境保护法令,建立健全该地区的环境保护机构。
Based on four kinds of calculation methods of domestic and international literatures about the calculation methods of heavy metals entering the estuary, based on the actual situation of the runoff at the mouth of the Pearl River estuary, The influx of heavy metals such as Hg, Cu, Pb and Cd in the Pearl River estuary was studied by the “Tide-time Flux Calculation Method 2”, and the dissolved flux into the sea and the flux of particulate into the sea were calculated. According to the survey data of the Pearl River Estuary, the results of the analysis and calculation concluded that the heavy metal fluxes of heavy metals such as Hg, Cu, Pb and Cd in the Pearl River Estuary are usually smaller than those of the particulate fluxes. In this paper, the countermeasures for prevention and control of heavy metal pollution in estuarine water bodies are divided into four aspects: strict control of heavy metal emissions from pollution sources, strengthening of pollution sources control, formulation of marine environmental protection ordinance in the region, and establishment and improvement of environmental protection agencies in the area.