摘要:
河口是化学环境和化学物质急剧变化的地区,是迁移到海洋中去的河流物质的控制中心。珠江是我国第三大河流,由东江、西江和北江三大支流汇合而成,流域面积广大,沿途排入大量的化学物质。这些化学物质是怎样经由珠江口而迁移到海洋中去的?在珠江口的分布如何?对珠江口的影响如何?等等,既是一个理论研究问题,也是一个实际问题。Cu、Pb、Zn是目前世界上研究较多的海洋微量化学成分。这些元素含量大时,是海洋污染物质。且这些元素的化合物不易分解,还能通过海洋生物的富集,变成更有害的物质。在珠江口海区,这三种元素的含量也较大。
Abstract:
Water samples collected at 14 sample-collecting staibns duing 2 survey cruises were filtered and dissofved oxygen, salinity, pH and temperature were measured in situ. Based on the analysis of the samples in the laboratory, the distribution andr behaviour of the heavy sietal eleznsnts Cu, Pb and Zn dissolved in the water phase and apparent in the suspened parfticutlate phase in the estuarine mixing zone of the Zhujiang River and adjacent regions have been studied.
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