Articles | Volume 16, issue 10
https://doi.org/10.5194/acp-16-6609-2016
https://doi.org/10.5194/acp-16-6609-2016
Research article
 | 
31 May 2016
Research article |  | 31 May 2016

Effectiveness of replacing catalytic converters in LPG-fueled vehicles in Hong Kong

Xiaopu Lyu, Hai Guo, Isobel J. Simpson, Simone Meinardi, Peter K. K. Louie, Zhenhao Ling, Yu Wang, Ming Liu, Connie W. Y. Luk, Nan Wang, and Donald R. Blake

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Cited articles

Barletta, B., Meinardi, S., Simpson, I. J., Khwaja, H. A., Blake, D. R., and Rowland, F. S.: Mixing ratios of volatile organic compounds (VOCs) in the atmosphere of Karachi, Pakistan, Atmos. Environ., 36, 3429–3443, 2002.
Blake, D. R. and Rowland, F. S.: Urban Leakage of Liquefied Petroleum Gas and Its Impact on Mexico City Air Quality, Science, 269, 953-956, 1995.
Borbon, A., Locoge, N., Veilerot, M., Galloo, J. C., and Guillermo, R.: Characterization of NMHCs in a French urban atmospheric: overview of the main sources, Sci. Total Environ., 292, 177–191, 2002.
Brown, S. G., Frankel, A., and Hafner, H. R.: Source apportionment of VOCs in Los Angeles area using positive matrix factorization, Atmos. Environ., 41, 227–237, 2007.
Carter, W. L. and Atkinson, R.: Computer modeling study of incremental hydrocarbon reactivity, Environ. Sci. Tech., 23, 864–880, 1989.
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In this study, the effectiveness of a LPG converter replacement program was evaluated. It was found that LPG-related VOCs and NOx decreased significantly due to the implementation of the program. Source apportionment also revealed the reduction of VOCs and NOx in LPG-fueled vehicle exhaust. From before to during the program, O3 increased slightly, mainly due to the reduction of NOx in LPG-fueled vehicle exhaust. To retain zero O3 increment, the lowest reduction ratio of VOCs / NOx was determined.
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