Composition and Chemical Reactivity of Ambient Volatile Organic Compounds in Binhai New Area, Tianjin
HAN Yang
WU Yufeng
DONG Haiyan
CHEN Feng
Abstract：To study the characteristics of composition and chemical reactivity of Tianjin,an online monitoring of volatile organic compounds was made during May ～ Sept,2014 in Binhai New Area,Tianjin.The result showed that the average concentration was 90.5×10-9 and the major components of VOCs were alkanes,alkene and arenes,accounting for 60.7％,29.0％ and 10.3％ of the total VOCs,respectively.According to the assessment of both propene-equivalent concentrations and ozone formation potential,alkenes of C2～C5 were shown to play a dominant role in photochemical reaction of which 1,3-butadiene,propene and ethene were the top compounds.The average mixing incremental reactivity (MIR) of VOCs in Tianjin is 3.08,which was about 1/3 of that of propylene.The ratio of M/P-xylene to ethylbenzene concentration as the index of the age of air mass showed that VOCs in Tianjin were not only from local emission but also long-range transport.
Keywords：Tianjinvolatile organic compoundsozone formation potentialchemical reaction activity
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 28-32 )