Trace metal pollution and carbon and nitrogen isotope tracing through the Yongdingxin River estuary in Bohai Bay, Northern China

被引：16

作者：

Sun, Conghui ^{[1
]}

Wei, Qi ^{[1
]}

Ma, Lixia ^{[1
]}

Li, Li ^{[2
]}

Wu, Guanghong ^{[1
]}

Pan, Ling ^{[1
]}

机构：

[1] Tianjin Normal Univ, Tianjin Key Lab Water Resources & Environm, 393 Binshuixi Rd, Tianjin 300387, Peoples R China

[2] State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China

来源：

MARINE POLLUTION BULLETIN | 2017年 / 115卷 / 1-2期

关键词：

Tide gate; Trace metals; Sediment; Accumulation; Carbon and nitrogen isotope ratio; Bohai Bay; CENTRAL EAST-COAST; ORGANIC-MATTER; GODAVARI ESTUARY; TROPICAL ESTUARY; HEAVY-METALS; SEDIMENTS; MERCURY; TIANJIN; CONTAMINATION; SPECIATION;

D O I：

10.1016/j.marpolbul.2016.10.066

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A tide gate was built in 2010 to prevent seawater from moving.upstream into the Yongdingxin River estuary in Bohai Bay, Northern China. We analysed the concentrations of Hg, Cd, Pb, TOC, TN, delta C-13 and delta N-15 and studied their variations in the surface layer and vertical profiles of sediment cores collected from the Yongdingxin River estuary. Contamination factors and geo-accumulation indices were calculated for each metal, which revealed high levels of contamination for Hg and Cd in the sediments, likely from anthropogenic sources. delta C-13 and delta N-15 were used as natural tracers to determine the sources of TOC and TN. The results revealed that sewage was the main source of TOC, while TN may have more than one source in the Yongdingxin River estuary. Sewage dominated trace metal pollution in the Yongdingxin River estuary. Our results provide a baseline for trace metal contamination in an estuary facing a large water project. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：451 / 458

页数：8

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