Technical Comments

Comment on “Unexpected Epoxide Formation in the Gas-Phase Photooxidation of Isoprene”

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Science  05 Feb 2010:
Vol. 327, Issue 5966, pp. 644
DOI: 10.1126/science.1180942

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Paulot et al. (Reports, 7 August 2009, p. 730) reported that the photooxidation of isoprene under low–nitrogen oxides (NOx) conditions produces epoxides that can facilitate the formation of secondary organic aerosol (SOA). However, another pathway involving the formation of methyl-butenediol intermediates can also lead to isoprene-derived SOA formation. Further research is needed to clarify the fate of isoprene in the atmosphere.

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