Assessment of temporal and spatial differences of source apportionment of nitrate in an urban river in China, using delta N-15 and delta O-18 values and an isotope mixing model
文献类型：期刊论文
| 作者 | Zhang, Qianqian; Wang, Xiaoke; Sun, Feixiang; Sun, Jichao; Liu, Jingtao; Ouyang, Zhiyun |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2015-11 |
| 卷号 | 22期号:24页码:20226-20233 |
| 关键词 | Urban rivers Nitrate pollution Nitrate sources Sources apportionment Stable isotope Bayesian isotope mixing model |
| 英文摘要 | Nitrate contamination in surface water has become an environmental problem widespread concern. In this study, environmental isotopes (delta N-15-NO3- and delta O-18-NO3-) and the chemical compositions of water samples from an urban river in Chongqing, China, were analyzed to evaluate the primary sources of nitrate pollution. A Bayesian isotope mixing model was applied to estimate the relative contributions of five potential NO3- sources to river pollution (sewage/manure, soil N, NH4+ in fertilizer and precipitation, NO3- fertilizer, and NO3- in precipitation). The results show that the urban river was affected by NO3- pollution from multiple sources. The major sources of NO3- pollution in the dry season were sewage/manure (38-50 %) and soil N (22-26 %); in the wet season, the major sources of NO3- pollution were sewage/manure (30-37 %), soil N (16-25 %), and precipitation (14-24 %). The higher contribution of N to the river water by precipitation indicates that atmospheric N deposition has become an important source of pollution in surface water in China. We conclude that domestic sewage is still the main contributor to NO3- pollution in urban rivers in China. The discharge of domestic sewage into rivers should be prohibited as a priority measure to prevent NO3- contamination. |
| 研究领域[WOS] | Environmental Sciences |
| WOS记录号 | WOS:000366637300088 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32257]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Qianqian,Wang, Xiaoke,Sun, Feixiang,et al. Assessment of temporal and spatial differences of source apportionment of nitrate in an urban river in China, using delta N-15 and delta O-18 values and an isotope mixing model[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2015,22(24):20226-20233. |
| APA | Zhang, Qianqian,Wang, Xiaoke,Sun, Feixiang,Sun, Jichao,Liu, Jingtao,&Ouyang, Zhiyun.(2015).Assessment of temporal and spatial differences of source apportionment of nitrate in an urban river in China, using delta N-15 and delta O-18 values and an isotope mixing model.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,22(24),20226-20233. |
| MLA | Zhang, Qianqian,et al."Assessment of temporal and spatial differences of source apportionment of nitrate in an urban river in China, using delta N-15 and delta O-18 values and an isotope mixing model".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 22.24(2015):20226-20233. |
入库方式： OAI收割
来源：生态环境研究中心
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