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| Distribution characteristics and source analysis of heavy metals in Nanchang section of the Fuhe River |
| CHEN Jun-hua1, ZHANG Yan-hong1, SHEN Wei2, GAO Bai1, ZHANG Wei-min1, SHI Hong3, CHEN Jia-hong1, TANG Yu-hong1 |
1. State Key Laboratory of Nuclear Resources and Environment, College of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China;
2. Institute of Geology and Mineral Exploration of Central and Southern Jiangxi Province, Nanchang 330029, China;
3. Jiangxi Central Station of Irrigation Experiment, Nanchang 330201, China |
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Abstract In order to investigate the spatial distributions and potential origins of heavy metals in the water bodies of Nanchang section of the Fuhe River, 23 surface water samples and 8 groundwater samples were collected in August of 2019. Seven heavy metals, namely:vanadium (V), manganese (Mn), barium (Ba), iron (Fe), strontium (Sr), zinc (Zn), and metalloid arsenic (As) were analyzed. Seven heavy metals generally had similar distribution patterns in water bodies, showing higher concentrations in the midstream and downstream portions of the river as compared to upstream part. The spatial difference of water pollutions was shown to be in middle and higher levels. Average concentrations of V, Fe and Mn in the surface water were higher than their thresholds set for centralized drinking water standard, as specified in the environmental quality standard for surface water (GB3838-2002). Average concentration of As in groundwater exceeded the threshold set for water quality standard class Ⅲ (GBT14848-2017). Multivariate statistical analysis showed that Sr, Ba and Mn probably mainly originated from the human discharges and industrial sewage, while Fe, V and Zn might be derived from the agricultural, fishery and traffic pollutions. Arsenic contaminations mainly be attributed to rocks and debris occurring in river bank and sediments at the bottom of the river.
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Received: 06 March 2020
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