DOI: 10.1016/j.atmosenv.2015.02.063
Scopus记录号: 2-s2.0-84924257000
论文题名: An experimental investigation into the atmospheric degradation of piperazine
作者: White S ; , Angove D ; , Azzi M ; , Tibbett A ; , Campbell I ; , Patterson M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 108 起始页码: 133
结束页码: 139
语种: 英语
英文关键词: Nitramine
; Nitrosamine
; PCC emissions
; Piperazine
Scopus关键词: Aerosols
; Gases
; Infrared spectroscopy
; Ion chromatography
; Mass spectrometry
; Nitric acid
; Nitrogen oxides
; Nitrosamines
; Ozone
; Photooxidation
; Atmospheric degradation
; Experimental investigations
; Gas chromatography-ion trap mass spectrometries
; Gas phase products
; Nitramines
; Piperazine
; Scanning mobility particle sizer
; Sorbent materials
; Gas chromatography
; amine
; n nitropiperazine
; n nitrosopiperazine
; nitric acid
; nitrogen oxide
; nitrosamine
; ozone
; piperazine
; sorbent
; unclassified drug
; aerosol
; ammonia
; desorption
; gas phase reaction
; mass spectrometry
; nitric acid
; organic compound
; oxidation
; aerosol
; ammonia formation
; Article
; atmospheric degradation
; degradation
; desorption
; gas chromatography
; high performance liquid chromatography
; infrared spectroscopy
; ion trap mass spectrometry
; mass fragmentography
; molecular weight
; oxidation
; photooxidation
; priority journal
; smog
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The atmospheric degradation of piperazine was investigated using an indoor smog chamber. Experiments were carried out in the presence of nitrogen oxides (NOx), ozone or nitric acid. Piperazine reacted rapidly under all evaluated conditions: irradiated in the presence of NOx and with ozone and nitric acid in the dark. Gas phase products from the oxidation of piperazine were identified by infrared spectroscopy, DNPH cartridges followed by HPLC analysis, and by sampling chamber gas through Tenax sorbent material followed by analysis using thermal desorption GC-ITMS (gas chromatography ion trap mass spectrometry).Eight compounds were positively identified, with a further nine compounds tentatively identified using GC-MS based on molecular weight and mass spectra. Ammonia formation was observed from piperazine oxidation, and its formation was from the subsequent reactions of photooxidation products of piperazine rather than directly from the reaction of piperazine. The nitrosamine and nitramine expected from piperazine, N-nitrosopiperazine, and N-nitropiperazine, were both identified and confirmed using 15NO, with a tentative maximum yield of nitrosamine of less than 5% observed. Aerosol yields, relative to total piperazine reacted not including that which absorbed to the walls, were considerably high but were not able to be quantified absolutely due to unusual behaviour of the scanning mobility particle sizer instrument to aerosol containing amines. The reaction of piperazine with gas phase nitric acid gave rise to immediate formation of aerosol. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81810
Appears in Collections: 气候变化事实与影响
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作者单位: CSIRO Energy Flagship, PO Box 52, North Ryde, NSW, Australia
Recommended Citation:
White S,, Angove D,, Azzi M,et al. An experimental investigation into the atmospheric degradation of piperazine[J]. Atmospheric Environment,2015-01-01,108