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Home > Archive>Volume 10, Issue 5, 2018 >527-535. DOI:10.13878/j.cnki.jnuist.2018.05.002
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Pollution characteristics and source apportionment of VOCs in ambient air of a residential area in Wuhan
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    Abstract:

    Ambient volatile organic compounds (VOCs) were collected from July 2016 to June 2017 at a residential site in Wuhan.The characteristics and source apportionment were studied.The results showed that the total concentration of VOCs was (46.24±24.57)×10-9;the concentration of alkanes was largest,followed by oxygenated VOCs,olefins,halogenated hydrocarbons,and aromatic hydrocarbons.Affected by motor vehicle exhaust,the ratio of alkanes was higher in the morning than in the afternoon.Vehicular exhaust was the major source in January,and the concentrations of VOCs in summer were higher than those in winter because of local coating solvents used for the chemical industry and photochemical reactions.The characteristics of biogenic emissions were clear from May to September.The positive matrix factorization model was used to investigate sources of VOCs in a residential area of Wuhan,and six factors were resolved,including combustion sources,vehicle exhaust,industrial processes,solvent use,gasoline volatilization,and biogenic sources.The contribution rate of combustion sources and vehicle exhaust was highest,which were important sources of controlled VOC emissions in the region.

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SHEN Longjiao, LIANG Shengwen, WU Yuting, XIANG Ping, CHEN Anxiong, CHEN Yi. Pollution characteristics and source apportionment of VOCs in ambient air of a residential area in Wuhan[J]. Journal of Nanjing University of Information Science & Technology,2018,10(5):527-535

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  • Received:August 10,2018
  • Online: November 02,2018
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