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研究河流中氮的变化与迁移,主要意义是:(1)从环境化学的角度了解其分布规律和地球化学过程;(2)探讨河水中溶解状态的无机氮输入海洋后,作为重要营养盐的作用。另外,也为研究海洋中氮的变化及循环提供依据。 珠江是中国唯一的热带亚热带大河,其河水中氮的变化,过去没有进行测定,也未见文章报道。我们首次进行了氮的分析工作,研究了不同形态氮的相互作用与转化规律及其向海洋的输送量。同时还对珠江与世界河流中氮的平均含量进行了比较。
Studying the change and migration of nitrogen in river has the following main points: (1) Understanding its distribution and geochemical process from the perspective of environmental chemistry; (2) Studying the dissolved inorganic nitrogen in river water as an important nutrient effect. In addition, it also provides the basis for studying the change and circulation of nitrogen in the ocean. The Pearl River is the only tropical and subtropical river in China. The change of nitrogen in its water has not been measured in the past and has not been reported. For the first time, we conducted nitrogen analysis and studied the interaction and transformation rules of different forms of nitrogen and their transport to the ocean. At the same time, the average contents of nitrogen in the Pearl River and the world rivers were also compared.