Distribution and speciation of mercury in surficial sediments from main mangrove wetlands in China

被引：76

作者：

Ding, Z. H. ^{[1
,2
,3
]}

Liu, J. L. ^{[1
,2
,4
]}

Li, L. Q. ^{[1
,2
]}

Lin, H. N. ^{[1
,2
]}

Wu, H. ^{[1
,2
]}

Hu, Z. Z. ^{[1
,2
]}

机构：

[1] Xiamen Univ, Key Lab, Minist Educ Coastal & Wetland Ecosyst, Xiamen 361005, Fujian, Peoples R China

[2] Xiamen Univ, Sch Life Sci, Xiamen 361005, Fujian, Peoples R China

[3] Minist Educ, Key Lab Nucl Resources & Environm, E China Inst Technol, Nanchang 330013, Peoples R China

[4] Chinese Acad Sci, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China

来源：

MARINE POLLUTION BULLETIN | 2009年 / 58卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Mangrove; Mercury; Sediment; Distribution; Speciation; China; HEAVY-METALS; METHYL MERCURY; PLANT; BIOAVAILABILITY; NORMALIZATION; METHYLMERCURY; LANDFILL; COPPER; SOILS; RIVER;

D O I：

10.1016/j.marpolbul.2009.04.029

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The purpose of this study was to establish the distribution, speciation and bioavailability of mercury in mangrove sediments. A systemic survey of surficial sediments from 13 mangrove wetlands of China was carried out. Hg concentrations ranged from 2.3-903.6 ng g(-1), with an average value of 189.4 ng g(-1). Of the 13 areas surveyed, the Hg content in sediments was similar to background levels in 6 areas but was much higher in the other seven areas. Hg levels were affected by natural and anthropogenic factors, including terrestrial pollutants, geomorphic properties, and indirectly by economic status. Hg levels were positively correlated with organic matter, pH, and silt and clay fractions, but Hg was negatively correlated with sand fraction. In most mangrove wetlands, Hg existed primarily in the form of volatile Hg. Hg is easily bioaccumulated in mangrove wetlands and may be the natural source of Hg emissions to the atmosphere. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1319 / 1325

页数：7

共 53 条

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