Geochemical and multiple stable isotope (N, O, S) investigation on tap and bottled water from Beijing, China
文献类型：SCI/SSCI论文
| 作者 | Peters M.; Guo, Q. J.; Strauss, H.; Zhu, G. X. |
| 发表日期 | 2015 |
| 关键词 | Drinking water quality Urban pollution Nitrate and sulfate Arsenic Heavy metals Beijing dissimilatory sulfate reduction dissolved sulfate groundwater nitrate chemical evaluation reducing bacteria drinking-water river-basin delta-o-18 plain fractionation |
| 英文摘要 | In the present study we investigated Beijing tap water from urban and suburban areas as well as bottled water from Beijing supermarkets with a focus on selected anions (Cl-, NO3-, SO42-, F-), metals and trace elements (Al, As, Co, Cr, Cu, Fe, Mn, Ni, Pb, Se, V, Zn), in order to reveal the degree of anthropogenic pollution and the ability of both water types to serve as a safe drinking water source. In addition, we applied multiple stable isotope (delta-N-15(nitrate), delta O-18(nitrate), delta S-34(sulfate), delta O-18(sulfate), Delta S-33(sulfate)) analyses on Beijing tap water for the identification of specific pollution sources. 27% of the analyzed tap water samples show one or more constituents above the national guideline limits. 9% of the samples reveal concentrations above the NO3- limit, while 5% exceed the standard value for As, which makes this tap water unsuitable for daily consumption due to a serious health risk, especially for children and babies. The median concentrations of most analyzed compounds are significantly higher in Beijing tap water compared to European countries. Concentration and isotope data for tap water indicate urban sewage as the major origin of anthropogenic pollutants probably released by leaking wastewater pipes to the local groundwater as the principal tap water source. The results suggest industrial emissions and As-rich alluvial deposits as further but minor pollutant sources. In contrast, bottled water exhibits exclusively concentrations below the standard values and clearly lower median values compared to Beijing tap water. Hence, bottled water can be recommended as a valuable alternative to Beijing tap water, especially in areas where the pollutant levels in tap water are high. Moreover, the results reveal the problematic groundwater situation in Beijing and demonstrate the advantages of a combined geochemical and multiple isotope approach in order to uncover complex pollution mechanisms in metropolitan areas. (C) 2015 Elsevier B.V. All rights reserved. |
| 出处 | Journal of Geochemical Exploration |
| 卷 | 157 |
| 页 | 36-51 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0375-6742 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38800]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Peters M.,Guo, Q. J.,Strauss, H.,et al. Geochemical and multiple stable isotope (N, O, S) investigation on tap and bottled water from Beijing, China. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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