珠江河口盐水入侵对有机污染物的影响概述

Review on effect of saline water intrusion on organic pollutants in Pearl River Estuary

针对河口咸水入侵改变了水动力条件和水体物理化学特性,进而影响到水体有机污染物的迁移、转化和分布特性,本文对国内外有关盐水入侵对有机污染物的影响研究成果进行了回顾和总结,并针对珠江河口的已有研究成果进行了重点论述。显示,珠江河口盐水入侵容易形成水体分层现象,从而阻碍了水体表底层的物质交换,造成水体底层严重的缺氧现象。鉴于国内相关方面研究的稀缺,针对河口盐水活动对有机污染物的影响,尚需开展更多相关方面的研究工作。

Estuary is a convergence area of seawater and freshwater from inland, and around which economy and society are often rather developed with serious organic pollution also for intensive human activities. Saline water intrusion in estuary changes water dynamics and physical and chemical properties, and then affects transportation, transformation and distribution of organic pollutants. So review and summary were made on fruits about effect of saline water intrusion on organic pollutants by researchers, especially on Pearl River Estuary. It shows that water stratification was formed easily by saline water intrusion in Pear River Estuary and blocked material exchange from water surface to bottom, which perhaps leads to dissolved oxygen shortage phenomena in bottom. More research work on saline water intrusion effect are still needed to reveal mechanism of complicated phenomena of organic pollutants variation in estuary.