Selected trace metals (As, Cd and Hg) distribution and contamination in the coastal wetland sediment of the northern Beibu Gulf, South China Sea

被引：88
|
作者：
Gan, Huayang [1 ,2 ]
Lin, Jinqin [1 ]
Liang, Kai [1 ]
Xia, Zhen [1 ]
机构：
[1] Guangzhou Marine Geol Survey, Guangzhou 510760, Guangdong, Peoples R China
[2] Leibniz Inst Balt Sea Res, D-18119 Rostock, Germany
来源：
MARINE POLLUTION BULLETIN | 2013年 / 66卷 / 1-2期
关键词：
Trace metal; Sediment; Geochronology; Coastal wetland; Beibu Gulf;
D O I：
10.1016/j.marpolbul.2012.09.020
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Contamination with As, Cd and Hg, their spatial and temporal distribution are reported from the coastal wetland sediments of the northern Beibu Gulf, South China Sea. The content of As, Cd, Hg and TOC in surface sediments is 8.1 +/- 5.8 mu g g(-1), 0.08 +/- 0.14 mu g g(-1), 0.034 +/- 0.028 mu g g(-1) and 0.45 +/- 0.39%, respectively. The mean sedimentation rates are 0.93-1.37 cm year(-1) during 1920s to 2008 determined by Pb-210 and Cs-137 dating in three cores. The vertical profiles of As, Cd and Hg content in the cores retrieved from Qin and Nanliu River estuaries show increasing trends during 1985-2008 due to anthropogenic impact caused by local economic development. Locally the surface sediments have potential ecological risk of As to benthos according to the NOAA sediment quality guidelines. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：252 / 258
页数：7
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