Heavy metal fractions and ecological risk assessment in sediments from urban, rural and reclamation-affected rivers of the Pearl River Estuary, China

被引:287
作者
Zhang, Guangliang [1 ]
Bai, Junhong [1 ]
Xiao, Rong [2 ]
Zhao, Qingqing [1 ]
Jia, Jia [1 ]
Cui, Baoshan [1 ]
Liu, Xinhui [1 ]
机构
[1] Beijing Normal Univ, State Key Lab Water Environm, Beijing 100875, Peoples R China
[2] Beijing Forestry Univ, Sch Nat Conservat, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
River sediment; Heavy metals; Geochemical fractions; Geoaccumulation index (I-geo); Risk assessment code (RAC); Pearl river estuary; China; WETLAND SOILS; RED-SEA; SPECIATION; DELTA; CONTAMINATION; MOBILITY; WATER; AREA; IDENTIFICATION; URBANIZATION;
D O I
10.1016/j.chemosphere.2017.05.155
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Rapid urbanization and reclamation processes in coastal areas have resulted in serious pollution to the aquatic environment. Less is known on the geochemical fractions and ecological risks in river sediment under various human activities pressures, which is essential for addressing the connections between heavy metal pollution and anthropogenic influences. River sediments were collected from different landscapes (i.e., urban, rural and reclamation areas) to investigate the impacts of urbanization and reclamation on the metallic pollution levels and ecological risks in the Pear River Estuary of China. Results showed that Cd, Zn and Cu with high total contents and geoaccumulation index (I-geo) were the primary metals in the Peal River sediments. Generally, urban river sediments, especially the surface sediment layer (0-10 cm), exhibited higher metallic pollution levels. As for geochemical fractions, reducible and residual fractions were the dominant forms for six determined metals. And the percentage of heavy metals bound to Fe-Mn oxides decreased with increasing soil depth but the reverse tendency was observed for residual fractions. Compared with rural river sediments, heavy metals were highly associated with the exchangeable and carbonate fractions in both urban and reclamation-affected river sediments, suggesting that anthropogenic activities mainly increased the active forms of metals. Approximately 80% of Cd existed in the non-residual fraction and posed medium to high ecological risk according to the risk assessment code (RAC) values. The redundancy analysis (RDA) revealed that both urbanization and reclamation processes would cause similar metallic characteristics, and sediment organic matter (SOC) might be the prominent influencing factor.(C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:278 / 288
页数:11
相关论文
共 50 条
[41]   Surface sediment properties and heavy metal contamination assessment in river sediments of the Pearl River Delta, China [J].
Zhao, Guangming ;
Ye, Siyuan ;
Yuan, Hongming ;
Ding, Xigui ;
Wan, Jin ;
Laws, Edward A. .
MARINE POLLUTION BULLETIN, 2018, 136 :300-308
[42]   Study of trace metal contamination and ecological risk assessment in the sediments of a tropical river estuary, Southwestern India [J].
Nishitha, D'Souza ;
Amrish, Vadakkeveedu Narayan ;
Arun, Kumar ;
Warrier, Anish Kumar ;
Udayashankar, Harikripa Narayana ;
Balakrishna, Keshava .
ENVIRONMENTAL MONITORING AND ASSESSMENT, 2022, 194 (02)
[43]   Ecological risk assessment and heavy metal contamination in the surface sediments of Haizhou Bay, China [J].
Liu, Baiqiong ;
Xu, Min ;
Wang, Jing ;
Wang, Zaifeng ;
Zhao, Lin .
MARINE POLLUTION BULLETIN, 2021, 163
[44]   Ecological risk assessment of heavy metal pollution in sediments of Nile River, Egypt [J].
Goher, Mohamed E. ;
Mangood, Ahmed H. ;
Mousa, Ibrahim E. ;
Salem, Salem G. ;
Hussein, Manar M. .
ENVIRONMENTAL MONITORING AND ASSESSMENT, 2021, 193 (11)
[45]   Ecological risk assessment of heavy metal pollution in sediments of Nile River, Egypt [J].
Mohamed E. Goher ;
Ahmed H. Mangood ;
Ibrahim E. Mousa ;
Salem G. Salem ;
Manar M. Hussein .
Environmental Monitoring and Assessment, 2021, 193
[46]   Accumulation and risk assessment of heavy metals in water, sediments, and aquatic organisms in rural rivers in the Taihu Lake region, China [J].
Bo, Luji ;
Wang, Dejian ;
Li, Tianling ;
Li, Yan ;
Zhang, Gang ;
Wang, Can ;
Zhang, Shanqing .
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2015, 22 (09) :6721-6731
[47]   Distribution pattern and potential ecological risk assessment of heavy metals in the sediments of Jiulong River estuary [J].
Guo, Xiaofeng ;
Guo, Zhouhua ;
Wang, Cui ;
Chen, Keliang .
HYDRAULIC ENGINEERING III, 2015, :247-254
[48]   Ecological Risk from Toxic Metals in Sediments of the Yangtze, Yellow, Pearl, and Liaohe Rivers, China [J].
Xin Yao ;
Kun Luo ;
Yandong Niu ;
Youzhi Li ;
Bo Ren .
Bulletin of Environmental Contamination and Toxicology, 2021, 107 :140-146
[49]   Heavy Metal Speciation in Sediments and the Associated Ecological Risks in Rural Rivers in Southern Jiangsu Province, China [J].
Bo, Luji ;
Wang, Dejian ;
Zhang, Gang ;
Wang, Can .
SOIL & SEDIMENT CONTAMINATION, 2015, 24 (01) :90-102
[50]   Ecological risk assessment of dissolved heavy metals in the Yangtze River Estuary and Zhejiang coastal waters, China [J].
Hu, Xupeng ;
Zhai, Xiaohui ;
Jin, Yimin ;
Wade, Terry L. ;
Zhou, Xian ;
Zhuang, Tonghui ;
Ning, Jianghao ;
Song, Xiuqing ;
Cai, Wei ;
Chen, Zongwei ;
Li, Xinxin .
MARINE POLLUTION BULLETIN, 2024, 205