Variation in nitrate isotopic signatures in sewage for source apportionment with urbanization: a case study in Beijing, China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Variation in nitrate isotopic signatures in sewage for source apportionment with urbanization: a case study in Beijing, China
	Xian, Chaofan; Ouyang, Zhiyun; Li, Yanmin; Xiao, Yang; Ren, Yufen
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2016-11
卷号	23 期号:22 页码:22871-22881
关键词	Nitrate Dual isotope Sewage treatment Source apportionment Beijing
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
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35695]
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	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.
APA	Xian, Chaofan,Ouyang, Zhiyun,Li, Yanmin,Xiao, Yang,&Ren, Yufen.(2016).Variation in nitrate isotopic signatures in sewage for source apportionment with urbanization: a case study in Beijing, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(22),22871-22881.
MLA	Xian, Chaofan,et al."Variation in nitrate isotopic signatures in sewage for source apportionment with urbanization: a case study in Beijing, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.22(2016):22871-22881.