| Geochemical characteristics of dissolved heavy metals in Zhujiang River, Southwest China: Spatial-temporal distribution, source, export flux estimation, and a water quality assessment | |
| Jie Zeng; Guilin Han; Qixin Wu; Yang Tang | |
| 2019 | |
| Source Publication | Peerj
 |
| Pages | 1-21 |
| Abstract | To investigate the sources and spatial-temporal distribution of dissolved heavy metals in river water, and to evaluate the water quality, a total of 162 water samples were collected from 81 key sampling points in high and low flflow seasons separately in the Zhujiang River, Southwest China. Ten dissolved heavy metals (V, Cr, Mn, Co, Ni, Cu, Mo, Cd, Ba, and Pb) in the Zhujiang River water exhibit little variation at temporal scale, but vary with a signifificant spatial heterogeneity. Furthermore, different metals present different variation trends along the main channel of the Zhujiang River. Our results suggest that Ba (14.72 mg L-1 in low flflow season and 12.50 mg L-1 in high flflow season) and Cr (6.85 mg L-1 in low flflow season and 7.52 mg L-1 in high flflow season) are consistently the most abundant metals in the two sampling periods. According to the water quality index (WQI values ranged from 1.3 to 43.9) and health risk assessment, metals investigated in Zhujiang River are below the hazard level (all hazard index (HI) < 1). Application of statistical approaches, including correlation matrix and principal component analysis (PCA), identify three principal components that account for 61.74% of the total variance, the results conclude that the
anthropogenic heavy metals (V, Cr, Ni, and Cu) are greatly impacted by the dilution effect, and the heavy metals in Zhujiang River are mainly presented a natural sources signature from the perspective of entire basin. Moreover, our results reveal that the estimated export budget of several heavy metals including V
(735.6 t year-1 ), Cr (1,561.1 t year-1 ), Ni (498.2 t year-1 ), and Mo (118.9 t year-1 ) to the ocean are higher than the world average. |
| Keyword | Zhujiang River water Quality Index health Risk Dissolved Heavy Metals Southwest China |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/42920512-1/10484 |
| Collection | 环境地球化学国家重点实验室 |
| Affiliation | 1.School of Scientific Research, China University of Geosciences (Beijing), Beijing, China 2.Key Laboratory of Karst Environment and Geohazard, Ministry of Land and Resources, Guizhou University, Guiyang, China 3.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China |
| Recommended Citation GB/T 7714 | Jie Zeng；Guilin Han；Qixin Wu；Yang Tang. Geochemical characteristics of dissolved heavy metals in Zhujiang River, Southwest China: Spatial-temporal distribution, source, export flux estimation, and a water quality assessment[J]. Peerj,2019:1-21. |
| APA | Jie Zeng；Guilin Han；Qixin Wu；Yang Tang.(2019).Geochemical characteristics of dissolved heavy metals in Zhujiang River, Southwest China: Spatial-temporal distribution, source, export flux estimation, and a water quality assessment.Peerj,1-21. |
| MLA | Jie Zeng；Guilin Han；Qixin Wu；Yang Tang."Geochemical characteristics of dissolved heavy metals in Zhujiang River, Southwest China: Spatial-temporal distribution, source, export flux estimation, and a water quality assessment".Peerj (2019):1-21. |
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| Geochemical characte（1777KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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