Arsenic concentration, speciation, and risk assessment in sediments of the Xijiang River basin, China

In order to acquire the spatial distribution, speciation, and risk assessment of arsenic (As), 18 sediment samples were collected in the middle and upper reaches (Nanpan River, Beipan River, Hongshui River, Diaojiang River, and Duliu River) of the Xijiang River basin, China. The chemical fractions o...

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Bibliographic Details
Published in:Environmental monitoring and assessment 2019-11, Vol.191 (11), p.663-12, Article 663
Main Authors: Wang, Hai-bo, Xu, Jia-ming, Gomez, Mario Alberto, Shi, Zhong-liang, Li, Shi-feng, Zang, Shu-yan
Format: Article
Language:English
Subjects:
Aluminum
Arsenic
Arsenic - analysis
Atmospheric Protection/Air Quality Control/Air Pollution
Carbonates
Carbonates - analysis
Chemical fractionation
China
Correlation analysis
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental monitoring
Environmental Monitoring - methods
Environmental science
Fluvial sediments
Fractionation
Geologic Sediments - chemistry
Iron
Manganese
Metals, Heavy - analysis
Monitoring/Environmental Analysis
Organic chemistry
Organic matter
Pollution levels
Risk Assessment
River basins
Rivers
Rivers - chemistry
Sediment
Sediment samplers
Sediment samples
Sediments
Spatial distribution
Speciation
Water Pollutants, Chemical - analysis
Water pollution
Water Pollution, Chemical - analysis
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Summary:In order to acquire the spatial distribution, speciation, and risk assessment of arsenic (As), 18 sediment samples were collected in the middle and upper reaches (Nanpan River, Beipan River, Hongshui River, Diaojiang River, and Duliu River) of the Xijiang River basin, China. The chemical fractions of As in the collected sediments were mainly dominated by the residual fraction and the Fe (Mn, Al) oxide/oxyhydroxides fractions. The correlation analysis results showed that the chemical fraction of As in sediments had close correlations with Mn, good correlations with Fe and organic matter (OM), while weak correlations with Al and carbonate. In addition, it also showed that Diaojiang River basin was found to have an extremely high As pollution status and suffered from high ecological risk. Duliu River and Nanpan River had moderately polluted levels of As and showed a low ecological risk. The other sample sites of Xijiang River basin were uncontaminated of As. The assessment results from this study indicated that the different types of species present based on the chemical fractionation of As from the Xijiang River basin showed different risks. Graphical abstract
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-019-7883-4