Heavy metal contamination and ecological risk in Futian mangrove forest sediment in Shenzhen Bay, South China

被引：78
作者：
Li, Rongyu [1 ]
Li, Ruili [1 ]
Chai, Minwei [2 ]
Shen, Xiaoxue [1 ]
Xu, Hualin [3 ]
Qiu, Guoyu [1 ]
机构：
[1] Peking Univ, Shenzhen Grad Sch, Sch Environm & Energy, Key Lab Urban Habitat Environm Sci & Technol, Shenzhen 518055, Peoples R China
[2] PKU HICUST Shenzhen Hong Kong Inst, Shenzhen Key Lab Environm Simulat & Pollut Contro, Shenzhen 518057, Peoples R China
[3] Guangdong Neilingding Futian Natl Nat Reserve, Shenzhen 518000, Peoples R China
来源：
MARINE POLLUTION BULLETIN | 2015年 / 101卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Ecological risk assessment; Heavy metal; Mangrove; Sediment; SURFACE SEDIMENTS; TRACE-METALS; ENVIRONMENTAL RISK; QUALITY GUIDELINES; BOHAI BAY; POLLUTION; ACCUMULATION; ECOSYSTEMS; SOILS; COAST;
D O I：
10.1016/j.marpolbul.2015.09.048
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Surface sediments in the Futian mangrove forest (South China) were analyzed for heavy metals including cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb) and zinc (Zn). The heavy metal distributions varied greatly in surface sediments, reflecting some sediment heterogeneity. The heavy metal concentrations decreased in the order of Zn > Cr > Pb > Cu > Cd. According to the mean probable effects level quotient, the combination of studied metals had a 21% probability of being toxic. The potential ecological risk index and geo-accumulation index also revealed high metal contamination. Cd was of primary concern due to its higher assessment values and potential for adverse biological effects. Multivariate analysis implied that clay and silt played a significant role in raising the levels of Cr, Cu and Zn. The percentage of mobile heavy metals was relatively higher, without considerable ecological risk to the biota based on the risk assessment code. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：448 / 456
页数：9
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