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Particle Partitioning Potential of Organic Compounds is Highest in the Eastern US and Driven by Anthropogenic Water : Volume 13, Issue 5 (14/05/2013)

By Carlton, A. G.

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Book Id: WPLBN0003980145
Format Type: PDF Article :
File Size: Pages 28
Reproduction Date: 2015

Title: Particle Partitioning Potential of Organic Compounds is Highest in the Eastern US and Driven by Anthropogenic Water : Volume 13, Issue 5 (14/05/2013)  
Author: Carlton, A. G.
Volume: Vol. 13, Issue 5
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Carlton, A. G., & Turpin, B. J. (2013). Particle Partitioning Potential of Organic Compounds is Highest in the Eastern US and Driven by Anthropogenic Water : Volume 13, Issue 5 (14/05/2013). Retrieved from http://worldlibrary.org/


Description
Description: Dept. of Environmental Sciences, Rutgers University, New Brunswick, NJ 08901, USA. Gas phase water-soluble organic matter (WSOMg) is ubiquitous in the troposphere. In the summertime, the potential for these gases to partition to particle phase liquid water (H2Optcl) where they can form secondary organic aerosol (SOAAQ) is high in the Eastern US and low elsewhere, with the exception of an area near Los Angeles, CA. This spatial pattern is driven by mass concentrations of H2Optcl, not WSOMg. H2Optcl mass concentrations are predicted to be high in the Eastern US, largely due to sulfate. The ability of sulfate to increase H2Optcl is well-established and routinely included in atmospheric models, however WSOMg partitioning to this water and subsequent SOA formation is not. The high mass concentrations of H2Optcl in the southeast (SE) US but not the Amazon, may help explain why biogenic SOA mass concentrations are high in the SE US, but low in the Amazon. Furthermore, during the summertime in the Eastern US, the potential for organic gases to partition into liquid water is greater than their potential to partition into organic matter (OM) because concentrations of WSOMg and H2Optcl are higher than semi-volatile gases and OM. Thus, unless condensed phase yields are substantially different (> ~ order of magnitude), we expect that SOA formed through aqueous phase pathways (SOAAQ) will dominate in the Eastern US. These findings also suggest that H2Optcl is largely anthropogenic and provide a previously unrecognized mechanism by which anthropogenic pollutants impact the amount of SOA mass formed from biogenic organic emissions. The previously reported estimate of the controllable fraction of biogenic SOA in the Eastern US (50%) is likely too low.

Summary
Particle partitioning potential of organic compounds is highest in the Eastern US and driven by anthropogenic water

Excerpt
Blando, J. D. and Turpin, B. J.: Secondary organic aerosol formation in cloud and fog droplets: a literature evaluation of plausibility, Atmos. Environ., 34, 1623–1632, 2000.; Canepari, S., Farao, C., Marconi, E., Giovannelli, C., and Perrino, C.: Qualitative and quantitative determination of water in airborne particulate matter, Atmos. Chem. Phys., 13, 1193–1202, doi:10.5194/acp-13-1193-2013, 2013.%; Carlton, A. G. and Baker, K.: Photochemical modeling of the Ozark isoprene volcano: MEGAN, BEIS and their impacts on air quality predictions, Environ. Sci. Technol., 45, 4438–4445, 2011.; Altieri, K. E., Carlton, A. G., Turpin, B. J., and Seitzinger, S.: Formation of Oligomers in cloud-processing: reactions of isoprene oxidation products, Environ. Sci. Technol., 40, 4956–4960, 2006.; Altieri, K. E., Seitzinger, S. P., Carlton, A. G., Turpin, B. J., Klein, G. C., and Marshall, A. G.: Oligomers formed through in-cloud methylglyoxal reactions: chemical composition, properties, and mechanisms investigated by ultra-high resolution FT-ICR mass spectrometry, Atmos. Environ., 42, 1476–1490, 2008.; Atkinson, R. and Arey, J.: Atmospheric degradation of volatile organic compounds, Chem. Rev., 103, 4605–4638, 2003.; Carlton, A. G., Lim, H.-J., Altieri, K., Seitinger, S., and Turpin, B. J.: Link between Isoprene and SOA: fate of pyruvic acid in dilute aqueous solution, Geophys. Res. Lett., 33, L06822, doi:10.1029/2005GL025374, 2006.; Carlton, A. G., Turpin, B. J., Altieri, K. E., Reff, A., Seitzinger, S., Lim, H. J., and Ervens, B.: Atmospheric oxalic acid and SOA production from glyoxal: results of aqueous photooxidation experiments, Atmos. Environ., 41, 7588–7602, 2007.; Carlton, A. G., Turpin, B. J., Altieri, K. E., Seitzinger, S. P., Mathur, R., Roselle, S. J., and Weber, R. J.: CMAQ model performance enhanced when in-cloud SOA is included: comparisons of OC predictions with measurements, Environ. Sci. Technol., 42, 8798–8802, 2008.; Carlton, A. G., Bhave, P. V., Napelenok, S. L., Edney, E. O., Sarwar, G., Pinder, R. W., Pouliot, G. A., and Houyoux, M.: Treatment of secondary organic aerosol in CMAQv4.7, Environ. Sci. Technol., 44, 8553–8560, 2010a.; Carlton, A. G., Pinder, R. W., Bhave, P. V., and Pouliot, G. A.: To what extent can biogenic SOA be controlled?, Environ. Sci. Technol., 44, 3376–3380, 2010b.; Chameides, W. L., Fehsenfeld, F., Rodgers, M. O., Cardelino, C., Martinez, J., Parrish, D., Lonneman, W., Lawson, D. R., Rasmussen, R. A., Zimmerman, P., Greenberg, J., Middleton, P., and Wang, T.: Ozone precursor relationships in the ambient atmosphere, J. Geophys. Res.-Atmos., 97, 6037–6055, 1992.; 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

 

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