Chemical composition of sulfate as a function of particle size in New York summer aerosol

Journal Article · Mon May 14 04:00:00 EDT 1979 · Ann. N.Y. Acad. Sci.; (United States)

DOI:https://doi.org/10.1111/j.1749-6632.1979.tb14120.x· OSTI ID:5860242

Tanner, R L ^[1]; Garber, R; Marlow, W; Leaderer, B P; Leyko, M A

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1. Brookhaven National Lab., Upton, NY

Aerosol samples from a New York City site have been collected by a variety of sampling techniques during August, 1976 and analyzed for sulfate and related cationic species as a function of particle size from > 7 ..mu..m to < 0.05 ..mu..m diameter. About 85% of the sulfate mass was found in respirable particles less than 2 ..mu..m in diameter; over 70% of the sulfate was found in submicron particles and at least 50% of the sulfate in particles below about 0.25 ..mu..m diameter. The sulfate proportion of the aerosol volume increases with decreasing particle diameter throughout the respirable particle size range. Ammonium in aerosol particles is highly correlated with sulfate concentration in respirable particle size ranges with correlation coefficient, r = 0.92 to 0.94. Multiple correlation of sulfate with strong acid and ammonium increases the value of r to > 0.95, but there is an indiction of other variable sources of strong acid which somewhat confound the data.

• DOE Contract Number: EY-76-C-02-0016
• OSTI ID: 5860242
• Journal Information: Ann. N.Y. Acad. Sci.; (United States), Journal Name: Ann. N.Y. Acad. Sci.; (United States) Vol. 322; ISSN ANYAA
• Country of Publication: United States
• Language: English

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