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Characterization and quantification of isoprene-derived epoxydiols in ambient aerosol in the southeastern United States.
Environ Sci Technol. 2010 Jun 15; 44(12):4590-6.ES

Abstract

Isoprene-derived epoxydiols (IEPOX) are identified in ambient aerosol samples for the first time, together with other previously identified isoprene tracers (i.e., 2-methyltetrols, 2-methylglyceric acid, C(5)-alkenetriols, and organosulfate derivatives of 2-methyltetrols). Fine ambient aerosol collected in downtown Atlanta, GA and rural Yorkville, GA during the 2008 August Mini-Intensive Gas and Aerosol Study (AMIGAS) was analyzed using both gas chromatography/quadrupole mass spectrometry (GC/MS) and gas chromatography/time-of-flight mass spectrometry (GC/TOFMS) with prior trimethylsilylation. Mass concentrations of IEPOX ranged from approximately 1 to 24 ng m(-3) in the aerosol collected from the two sites. Detection of particle-phase IEPOX in the AMIGAS samples supports recent laboratory results that gas-phase IEPOX produced from the photooxidation of isoprene under low-NO(x) conditions is a key precursor of ambient isoprene secondary organic aerosol (SOA) formation. On average, the sum of the mass concentrations of IEPOX and the measured isoprene SOA tracers accounted for about 3% of the organic carbon, demonstrating the significance of isoprene oxidation to the formation of ambient aerosol in this region.

Authors+Show Affiliations

Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20476767

Citation

Chan, Man Nin, et al. "Characterization and Quantification of Isoprene-derived Epoxydiols in Ambient Aerosol in the Southeastern United States." Environmental Science & Technology, vol. 44, no. 12, 2010, pp. 4590-6.
Chan MN, Surratt JD, Claeys M, et al. Characterization and quantification of isoprene-derived epoxydiols in ambient aerosol in the southeastern United States. Environ Sci Technol. 2010;44(12):4590-6.
Chan, M. N., Surratt, J. D., Claeys, M., Edgerton, E. S., Tanner, R. L., Shaw, S. L., Zheng, M., Knipping, E. M., Eddingsaas, N. C., Wennberg, P. O., & Seinfeld, J. H. (2010). Characterization and quantification of isoprene-derived epoxydiols in ambient aerosol in the southeastern United States. Environmental Science & Technology, 44(12), 4590-6. https://doi.org/10.1021/es100596b
Chan MN, et al. Characterization and Quantification of Isoprene-derived Epoxydiols in Ambient Aerosol in the Southeastern United States. Environ Sci Technol. 2010 Jun 15;44(12):4590-6. PubMed PMID: 20476767.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization and quantification of isoprene-derived epoxydiols in ambient aerosol in the southeastern United States. AU - Chan,Man Nin, AU - Surratt,Jason D, AU - Claeys,Magda, AU - Edgerton,Eric S, AU - Tanner,Roger L, AU - Shaw,Stephanie L, AU - Zheng,Mei, AU - Knipping,Eladio M, AU - Eddingsaas,Nathan C, AU - Wennberg,Paul O, AU - Seinfeld,John H, PY - 2010/5/19/entrez PY - 2010/5/19/pubmed PY - 2010/8/7/medline SP - 4590 EP - 6 JF - Environmental science & technology JO - Environ Sci Technol VL - 44 IS - 12 N2 - Isoprene-derived epoxydiols (IEPOX) are identified in ambient aerosol samples for the first time, together with other previously identified isoprene tracers (i.e., 2-methyltetrols, 2-methylglyceric acid, C(5)-alkenetriols, and organosulfate derivatives of 2-methyltetrols). Fine ambient aerosol collected in downtown Atlanta, GA and rural Yorkville, GA during the 2008 August Mini-Intensive Gas and Aerosol Study (AMIGAS) was analyzed using both gas chromatography/quadrupole mass spectrometry (GC/MS) and gas chromatography/time-of-flight mass spectrometry (GC/TOFMS) with prior trimethylsilylation. Mass concentrations of IEPOX ranged from approximately 1 to 24 ng m(-3) in the aerosol collected from the two sites. Detection of particle-phase IEPOX in the AMIGAS samples supports recent laboratory results that gas-phase IEPOX produced from the photooxidation of isoprene under low-NO(x) conditions is a key precursor of ambient isoprene secondary organic aerosol (SOA) formation. On average, the sum of the mass concentrations of IEPOX and the measured isoprene SOA tracers accounted for about 3% of the organic carbon, demonstrating the significance of isoprene oxidation to the formation of ambient aerosol in this region. SN - 0013-936X UR - https://www.unboundmedicine.com/medline/citation/20476767/Characterization_and_quantification_of_isoprene_derived_epoxydiols_in_ambient_aerosol_in_the_southeastern_United_States_ L2 - https://doi.org/10.1021/es100596b DB - PRIME DP - Unbound Medicine ER -