| Who controls the monthly variations of NH4+ nitrogen isotope composition in precipitation? | |
| Hong-Wei Xiao; Hua-Yun Xiao; Ai-min Long; Yan-Li Wang | |
| Corresponding Author | Hua-Yun Xiao |
| 2012 | |
| Source Publication | Atmospheric Environment
 |
| Volume | 54Issue:2Pages:201-206 |
| Abstract | Nitrogen isotopes of ammonium (delta N-15-NH4+) in precipitation have been analyzed, to study their monthly from Oct. 2008 to Sep. 2009 at Guiyang, Southwest China. delta N-15-NH4+ values were higher in and lower in summer showing a strong sine curve. In summer (rainy season), raindrop may more light ammonia by washout process, because raindrop incorporated (NH3)-N-15 preferentially left the N-14 in the atmosphere. At the same time, longer sunshine times imply more hv for H2SO4 of SO2 to H2SO4, which accelerates gaseous to particle conversion of NH3 to (NH4)(2)SO4 unidirectional reactions for isotopic enriched N-14. The above two aspects can somewhat cause the variation of nitrogen isotopic composition, but are not the main or direct reasons. The has an opposite trend with seasonal variation of delta N-15 values. The temperature not only seasonal variation of delta N-15 values, but also increases the volatilization rate of NH3 and microbial And there is a robust linear relationship between temperature and delta N-15, showing that the is the main factor to decide the monthly variation of delta N-15-NH4+. (C) 2012 Elsevier Ltd. All rights reserved. constituents' enrichment, so it is helpful for enrichment of metallogenetic elements and plays an important role in the formation of porphyry Au-Cu deposits in this region. |
| Keyword | Ammonium Δ15n Isotopic Fractionation Unidirectional Reaction Exchange Reaction Seasonal Variation |
| 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/352002/4822 |
| 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 |
| Corresponding Author | Hua-Yun Xiao |
| Recommended Citation GB/T 7714 | Hong-Wei Xiao,Hua-Yun Xiao,Ai-min Long,et al. Who controls the monthly variations of NH4+ nitrogen isotope composition in precipitation?[J]. Atmospheric Environment,2012,54(2):201-206. |
| APA | Hong-Wei Xiao,Hua-Yun Xiao,Ai-min Long,&Yan-Li Wang.(2012).Who controls the monthly variations of NH4+ nitrogen isotope composition in precipitation?.Atmospheric Environment,54(2),201-206. |
| MLA | Hong-Wei Xiao,et al."Who controls the monthly variations of NH4+ nitrogen isotope composition in precipitation?".Atmospheric Environment 54.2(2012):201-206. |
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