Investigation and estimation of emission sources of 54 volatile organic compounds in ambient air in Tokyo

Adaptation of a proton transfer reaction mass spectrometer instrument to employ NO+ as reagent ion for the detection of 1,3‐butadiene in the ambient atmosphere

“…2 Higher ambient 1,3-butadiene concentrations were observed in 2001 for the Tokyo metropolitan area -300 pptv (roadway site) and 150 pptv (residential site). 18 Analysis of the Tokyo study dataset (where benzene concentrations were also monitored) showed that there was a strong correlation between the benzene and 1,3-butadiene concentrations. 19 From this analysis it was concluded that the source of these emissions was predominately vehicle engine exhaust and a molar emission ratio of benzene to 1,3-butadiene of 2.8:1 was reported.…”

Health risk assessment of BTEX emissions in the landfill environment

“…urban air [5][6][7][8][9][10][11][12][13][14][15][16], but few studies on the VOC concentrations in MSW landfills [17][18][19][20][21][22][23][24]. Allen et al [17] examined the VOCs in LFG at seven landfills in United Kingdom.…”

PTR-MS fragmentation patterns of gasoline hydrocarbons

“…[39,25]). Another measurement approach using the proton transfer reaction mass spectrometer (PTR-MS) instrument has seen increased use by the research community in urban field studies [18,28,12,17]. The PTR-MS instrument provides a less detailed account of the organic chemical composition of urban air but it does have some advantages.…”

“…Given the large number of compounds present, the fidelity and information content of the PTR-MS mass spectrum of urban air is not well understood and limits its usefulness as a VOC monitor. Compounds reported from PTR-MS urban air measurements tend to focus on monoaromatic compounds and light oxygenated compounds [18,12,28,14] as these compounds are thought to have little interference caused by fragmentation of other organic compounds. Intercomparisons between GC-MS and PTR-MS measurements for urban air are relatively few and sometimes illustrate inherent problems with PTR-MS operating conditions and compound fragmentation [20,17].…”