Ambient Air Concentrations, Source Profiles, and Source Apportionment of 71 Different C2-C10 Volatile Organic Compounds in Urban and Residential Areas of Finland

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• 作者：Heidi Hell&eacute ; n ; Hannele Hakola ; Liisa Pirjola ; Tuomas Laurila ; and Kati-henna Pystynen
• 刊名：Environmental Science & Technology
• 出版年：2006
• 出版时间：January 1, 2006
• 年：2006
• 卷：40
• 期：1
• 页码：103 - 108
• 全文大小：219K
• 年卷期：v.40,no.1(January 1, 2006)
• ISSN：1520-5851

文摘

Ambient air concentrations and source contributions of 71volatile organic compounds (VOCs) including C₂-C₁₀nonmethane hydrocarbons, halogenated hydrocarbons,and carbonyls were studied at urban and residential sitesin Finland. On the basis of the emission profile andconcentration measurements, the contributions of differentsources were estimated using a chemical mass balance(CMB) receptor model. It was shown that it is possible toapply CMB in the case of a large number of differentcompounds with different properties. However, theperformance of the model varies significantly for thedifferent compounds. According to the CMB analysis, majorsources for these VOCs at the urban site were trafficand distant sources. At the residential site, the contributiondue to traffic was minor while distant sources, liquidgasoline, and wood combustion made higher contributions.However, different compound groups or compoundswere found to have totally different sources. It was alsoshown that a biogenic compound, isoprene, also hassignificant anthropogenic sources and that at some locationswood combustion can be an important source for someVOCs usually considered as traffic-related compounds (e.g.,benzene).