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我国近岸海域环境问题突出,总体污染形势严峻,珠江口是我国近岸污染最严重的海域之一。本文总结了近年来珠江口水域典型POPs的污染特点和历史记录,分析了它们在水体、沉积物和海洋生物中的污染水平、分布、来源和历史趋势等特征。结果表明,滴滴涕和六六六的污染水平较严重,多环芳烃处于中度污染,其它污染物污染水平较低。滴滴涕与高溴代联苯醚的沉积通量仍在快速增长。
The environmental problems in China’s coastal waters are prominent, and the overall pollution situation is grim. The Pearl River Mouth is one of the most polluted coastal waters in China. This paper summarizes the characteristics and historical records of typical POPs pollution in the Pearl River Estuary in recent years, and analyzes their pollution levels, distribution, sources and historical trends in water bodies, sediments and marine organisms. The results showed that the pollution levels of DDT and BHC were more serious, PAHs were moderately polluted, and the pollution levels of other pollutants were lower. The deposition flux of DDT and HBT is still rapidly increasing.