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对珠江口水体溶解相及颗粒相多溴联苯醚(PBDEs)的时空、垂向分布及其在两相间的分配进行了初步研究.结果表明,PBDEs在水体中的分布随采样季节的变化显示出明显的差异性.5月以冲淡海水为主的水体PBDEs浓度明显低于10月以新输入河流淡水为主的水体PBDEs浓度.10月样品的空间分布表明河流径流输入是伶仃洋内PBDEs的主要来源,其中溶解有机碳含量可能是水体中PBDEs含量的主要控制因素.5月冲淡海水PBDEs的空间和垂向分布相对均一,颗粒物含量是水体中PBDEs含量的主要控制因素.溶解有机碳含量、颗粒态有机碳含量对PBDE在两相中的分布与分配都有一定作用,但随水体性质不同存在一定差异。
The spatial and temporal distributions of the dissolved phase and PBDEs in the Pearl River estuary and the distribution of PBDEs in the two phases were studied. The results showed that the distribution of PBDEs in water showed obvious changes with sampling season Difference.The concentration of PBDEs in water bodies dominated by diluted seawater in May was significantly lower than that in October with fresh water input of fresh river.The spatial distribution of samples in October showed that river runoff input was the main source of PBDEs in Lingdingyang, The dissolved organic carbon content may be the main controlling factor of PBDEs in water body.The spatial and vertical distribution of PBDEs in dilute seawater is relatively uniform in May, and the particulate matter content is the main controlling factor of PBDEs content in water.The dissolved organic carbon content, particulate organic The carbon content has a certain effect on the distribution and distribution of PBDE in the two phases, but there are some differences with the nature of the water.