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河流把陆源物质带入海洋,是补充海水化学成分的主要来源之一。河口滨海区是海洋中成分变化最剧烈的区域,河水与海水的混合过程,伴随着水体的水文及物理化学条件的急剧变化,发生了一系列化学的和生物化学的变化,氧化还原反应,溶解-沉淀作用以及吸附-脱附作用,这些作用每时每刻都在进行。同时,河口地区人口稠密,工农业污水和生活污水的排入,对水体的化学成分影响甚大。因此,河口滨海区诸化学成分的化学特性是异常复杂的。
Rivers bring land-based material into the sea and are one of the main sources of chemical composition of seawater. Estuary coastal area is the most dramatic change in the composition of the marine areas, river water and sea water mixing process, with the rapid hydrological and physical and chemical conditions of water change, a series of chemical and biochemical changes, oxidation and reduction reaction, dissolution - Precipitation and adsorption - desorption, these effects are carried out all the time. At the same time, estuarine areas are densely populated and the discharge of industrial and agricultural sewage and domestic sewage have a great impact on the chemical composition of water bodies. Therefore, the chemical composition of the chemical composition of the estuary coastal area is extremely complex.