Effects of Hyporheic Water Fluxes and Sediment Grain Size on the Concentration and Diffusive Flux of Heavy Metals in the Streambed
文献类型：期刊论文
| 作者 | Liu, Qi1; Song, Jinxi1,2; Zhang, Guotao3,4; Wang, Weize1; Guo, Weigiang1; Tang, Bin1; Kong, Feihe1; Huo, Aidi5 |
| 刊名 | INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
 |
| 出版日期 | 2017-09-01 |
| 卷号 | 14期号:9页码:DOI:10.3390/ijerph14091020 |
| ISSN号 | 1660-4601 |
| 关键词 | Heavy Metals Hyporheic Vertical Water Exchange Fluxes Sediment Grain Size Spatial Variability Diffusive Fluxes Juehe River |
| DOI | 10.3390/ijerph14091020 |
| 通讯作者 | Jinxi Song |
| 英文摘要 | The hyporheic zone regulates physicochemical processes in surface-groundwater systems and can be an important source of heavy metals in fluvial systems. This study assesses the pore water concentrations and diffusive fluxes of heavy metals with respect to the vertical water exchange flux (VWEF) and sediment grain size. Water and sediment samples were collected on August 2016 from upstream Site 1 and downstream Site 2 along the Juehe River in Shaanxi Province, China. Streambed vertical hydraulic conductivity (K-v) and the VWEF were estimated via the standpipe permeameter test method and Darcy's law. The heavy metal concentrations in the pore water were measured and the diffusive fluxes were calculated using Fick's first law. The VWEF patterns were dominated by upward flow, and Site 1 featured higher values of Kv and VWEF. Higher Cu and Zn concentrations occurred near the channel centre with coarse sand and gravel and greater upward VWEFs because coarser sediment and greater upward VWEFs cause stronger metal desorption capacity. Additionally, Cu and Zn at the two sites generally diffused from pore water to surface water, potentially due to the upward VWEF. The VWEF and sediment grain size are likely crucial factors influencing the heavy metal concentrations and diffusive fluxes. |
| 语种 | 英语 |
| WOS记录号 | WOS:000411574400072 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/19123]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.Northwest Univ, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Changan Univ, Sch Environm Sci & Engn, Xian 710054, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Qi,Song, Jinxi,Zhang, Guotao,et al. Effects of Hyporheic Water Fluxes and Sediment Grain Size on the Concentration and Diffusive Flux of Heavy Metals in the Streambed[J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,2017,14(9):DOI:10.3390/ijerph14091020. |
| APA | Liu, Qi.,Song, Jinxi.,Zhang, Guotao.,Wang, Weize.,Guo, Weigiang.,...&Huo, Aidi.(2017).Effects of Hyporheic Water Fluxes and Sediment Grain Size on the Concentration and Diffusive Flux of Heavy Metals in the Streambed.INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,14(9),DOI:10.3390/ijerph14091020. |
| MLA | Liu, Qi,et al."Effects of Hyporheic Water Fluxes and Sediment Grain Size on the Concentration and Diffusive Flux of Heavy Metals in the Streambed".INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 14.9(2017):DOI:10.3390/ijerph14091020. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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