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Volatile chemical products emerging as largest petrochemical source of urban organic emissions

2018; American Association for the Advancement of Science; Volume: 359; Issue: 6377 Linguagem: Inglês

10.1126/science.aaq0524

1095-9203

Brian McDonald, J. A. de Gouw, J. B. Gilman, Shantanu H. Jathar, Ali Akherati, Christopher D. Cappa, J. L. Jiménez, J. Lee‐Taylor, Patrick L. Hayes, S. A. McKeen, Y. Y. Cui, Si‐Wan Kim, Drew R. Gentner, Gabriel Isaacman‐VanWertz, A. H. Goldstein, Robert A. Harley, G. J. Frost, J. M. Roberts, T. B. Ryerson, M. Trainer,

Vehicle emissions and performance

Air pollution evolution Transport-derived emissions of volatile organic compounds (VOCs) have decreased owing to stricter controls on air pollution. This means that the relative importance of chemicals in pesticides, coatings, printing inks, adhesives, cleaning agents, and personal care products has increased. McDonald et al. show that these volatile chemical products now contribute fully one-half of emitted VOCs in 33 industrialized cities (see the Perspective by Lewis). Thus, the focus of efforts to mitigate ozone formation and toxic chemical burdens need to be adjusted. Science , this issue p. 760 ; see also p. 744