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| Change Characteristics and Source Apportionment of Volatile Organic Compounds (VOCs) in the Northern Suburb of Shanghai |
| Received:December 16, 2019 Revised:March 13, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.06.017 |
| KeyWord:VOCs source apportionment factor analysis industrial area |
| Author | Institution |
| YE Lu |
Environmental Monitoring Station of Jiading District, Shanghai , China |
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| Abstract: |
| From January 1 to October 31, 2019, 58 kinds of VOCs were quantitatively detected by on-line gas chromatograph in the northern suburb of Shanghai. The composition, seasonal variation and daily variation of VOCs were analyzed. The ozone formation potential (OFP) of VOCs was estimated by the maximum incremental reactivity (MIR). The source of VOCs was analyzed by factor analysis. The results showed that the total volume concentration of VOCs was 25.79×10-9, in which alkanes accounted for 63.2%, olefins accounted for 11.6%, aromatics accounted for 19.8%, and alkynes accounted for 5.4%. There was an obviously seasonal variation of VOCs, with the maximum in summer and the minimum in autumn. The ozone formation potential was 76.99×10-9, in which alkanes accounted for 22.1%, olefins accounted for 37.5%, aromatics accounted for 38.7%, and alkynes accounted for 1.7%. By using the specific pollutant ratios (Total VOCs/Nitrogen Oxide and Toluene/Benzene) method, it indicated that the observation site was greatly affected by the surrounding industrial areas and vehicle emission sources. Source analysis of VOCs by factor analysis showed that the sources consisted of vehicle emission sources, industrial production sources, combustion sources, industrial production solvent use sources and biogenic emission sources. |
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