Distribution and fate of organochlorine pollutants in the Pearl River estuary

被引：163

作者：

Hong, HS ^{[1
]}

Chen, WQ ^{[1
]}

Xu, L ^{[1
]}

Wang, XH ^{[1
]}

Zhang, LP ^{[1
]}

机构：

[1] Xiamen Univ, SEDC Marine Ecol Environm Environm Sci Res Ctr, Res Lab, Xiamen 361005, Peoples R China

来源：

MARINE POLLUTION BULLETIN | 1999年 / 39卷 / 1-12期

关键词：

organochlorine pesticides; PCBs; distribution; fate; Pearl River estuary;

D O I：

10.1016/S0025-326X(99)00081-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Samples of surface sediment and suspended particulate matter (SPM) were collected from the Pearl River estuary, China, and the distribution and concentration of hexachlorocyclohexanes (HCHs), DDTs and polychlorinated biphenyls (PCBs) were extensively studied. The concentration ranges of HCHs, DDTs and PCBs in the sediments were 0.28-1.23 ng g(-1), 1.36-8.99 ng g(-1) and 0.18-1.82 ng g(-1), respectively. The concentrations of HCHs, DDTs and PCBs in the SPM varied both with the sampling locations and the season of collection. Higher concentrations were recorded in the SPM as compared with sediments. The distribution pattern of such organochlorine compounds (OCs), in the Pearl River estuary, showed that sources were some major river mouths and input from Shenzhen Bay. The concentrations of OCs were, however, low as compared with other estuaries and seas. The environmental fate of the OCs during estuarine mixing was determined, in part, by physicochemical and biochemical properties. The absorption and sedimentation of SPM were also considered important factors. Marine sediments may, therefore, be regarded as an important reservoir of hydrophobic and persistent OCs. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：376 / 382

页数：7

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