Source-specific ecological risk assessment and quantitative source apportionment of heavy metals in surface sediments of Pearl River Estuary, China

被引：55
作者：
Xiao, He [1 ,2 ,3 ]
Shahab, Asfandyar [3 ]
Ye, Feng [1 ,2 ]
Wei, Gangjian [1 ,2 ]
Li, Jieyue [3 ]
Deng, Liming [3 ]
机构：
[1] Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China
[2] Chinese Acad Sci, Guangzhou Inst Geochem, CAS Ctr Excellence Deep Earth Sci, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China
[3] Guilin Univ Technol, Coll Environm Sci & Engn, Guilin 541004, Peoples R China
来源：
MARINE POLLUTION BULLETIN | 2022年 / 179卷
基金：
中国博士后科学基金;
关键词：
Heavy metal contamination; Source-specific risk; Positive matrix factorization; Pearl River Estuary; POSITIVE MATRIX FACTORIZATION; SOURCE IDENTIFICATION; COASTAL SEDIMENTS; CONTINENTAL-SHELF; YANGTZE-RIVER; CONTAMINATION; POLLUTION; SOUTH; DELTA; URBAN;
D O I：
10.1016/j.marpolbul.2022.113726
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, surface sediments of the Pearl River Estuary were collected from 29 stations and investigated the spatial distribution, pollution level, quantitative source apportionment, and source-specific ecological risk of 10 heavy metals. The mean concentrations followed the order of Mn > Zn > Cr > Cu > Ni > Pb > As > Co > Cd > Hg. In terms of spatial distribution, it showed that the heavy metals were enriched in the inner Pearl River Estuary with 'extremely high' level of Hg, whereas, Cd and Zn posed 'moderate to high' contamination potential. We apportioned four main sources using positive matrix factorization model, in which natural geogenic and industrial manufacturing sources accounted for 36.84% and 27.11% of the total, respectively. However, the source-specific risk assessment suggested that mixed anthropogenic sources were the main contributors, and ecological risks were strongly affected by anthropogenic imports from the surrounding cities.
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页数：11
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