delta N-15-NH4+ variations of rainwater: Application of the Rayleigh model

	delta N-15-NH4+ variations of rainwater: Application of the Rayleigh model
	Hong-Wei Xiao; Hua-Yun Xiao; Ai-Min Long; Cong-Qiang Liu
	2015
Source Publication	Atmospheric Research (IF:3.778[JCR-2016],3.753[5-Year])
Volume	157 Issue:1 Pages:49-55
Abstract	It is generally difficult to measure atmospheric gaseous ammonia concentration and to identify its sources by isotopic technique due to the isotopic fractionation after it enters the atmosphere. In this study, Rayleigh model was successfully used to quantify atmospheric concentration and isotopic composition of gaseous ammonia based on sampling of 20 rain events from October 1st, 2008 to September 30, 2009 in Guiyang, southwest China. The estimated gaseous ammonia concentration was 25.7 +/- 36.3 mu g/m(3) and estimated isotopic composition was -16.8 +/- 4.9 parts per thousand in Guiyang. The study also showed that estimated enrichment factor was +10.4 +/- 43 parts per thousand, inferring that large nitrogen isotopic fractionation occurred during exchange reactions in most of the rain events. The atmospheric ammonium deposition was further estimated to be 38.1 kg/ha/year. However, there is no validation for the approach from an actual gas phase NH3 measurement to examine the model in this study.
Keyword	Rayleigh Model Initial Concentration Enrichment Factor Initial Nitrogen Isotope Ammonia
Subject Area	环境地球化学
Indexed By	SCI
Language	英语
Document Type	期刊论文
Identifier	http://ir.gyig.ac.cn/handle/352002/5945
Collection	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
Recommended Citation GB/T 7714	Hong-Wei Xiao,Hua-Yun Xiao,Ai-Min Long,et al. delta N-15-NH4+ variations of rainwater: Application of the Rayleigh model[J]. Atmospheric Research,2015,157(1):49-55.
APA	Hong-Wei Xiao,Hua-Yun Xiao,Ai-Min Long,&Cong-Qiang Liu.(2015).delta N-15-NH4+ variations of rainwater: Application of the Rayleigh model.Atmospheric Research,157(1),49-55.
MLA	Hong-Wei Xiao,et al."delta N-15-NH4+ variations of rainwater: Application of the Rayleigh model".Atmospheric Research 157.1(2015):49-55.

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