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题名: Variation in nitrate isotopic signatures in sewage for source apportionment with urbanization: a case study in Beijing, China
作者: Xian, Chaofan; Ouyang, Zhiyun; Li, Yanmin; Xiao Yang(肖洋); Ren, Yufen
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
出版日期: 2016-11
卷号: 23, 期号:22, 页码:22871-22881
关键词: Nitrate ; Dual isotope ; Sewage treatment ; Source apportionment ; Beijing
DOI: 10.1007/s11356-016-7498-z
部门归属: 城市与区域生态国家重点实验室
英文摘要: Nitrate (NO3 (-)) pollution is a severe problem in urban aquatic systems especially within megacity undergoing rapid urbanization, and mostly, sewage is supposed as the prevailing NO3 (-) source. A dual isotope approach (delta N-15-NO3 (-) and delta O-18-NO3 (-)) was applied to explore the variation in NO3 (-) isotopic signatures in sewage processed by wastewater treatment plants (WWTPs) in Beijing from 2014 to 2015. We found that the raw and treated sewage owned the different NO3 (-) isotopic signatures, including delta N-15 from 1.1 to 24.7 aEuro degrees and delta O-18 from 1.6 to 22.8 aEuro degrees in raw sewage, as well as delta N-15 from 6.1 to 22.8 aEuro degrees and delta O-18 from 1.6 to 13.2 aEuro degrees in treated effluents. The WWTP processing would result in the enrichment of NO3 (-) isotopic compositions in discharged effluents with NO3 (-) concentrations increasing. Besides, advanced sewage treatment technology with more pollutant N reduction may raise the heavier NO3 (-) isotopic compositions further. The NO3 (-) isotope value ranges of urban sewage and manure should be separated, and the seasonal and tighter NO3 (-) isotope value ranges are supposed to improve the accuracy of source apportionment. The NO3 (-) isotope value ranges conducted in this study might provide useful information for tracing NO3 (-) sources towards the implementation of efficient water pollution control in Beijing.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35695
Appears in Collections:城市与区域生态国家重点实验室_期刊论文

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Recommended Citation:
Xian, Chaofan,Ouyang, Zhiyun,Li, Yanmin,et al. Variation in nitrate isotopic signatures in sewage for source apportionment with urbanization: a case study in Beijing, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(22):22871-22881.
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