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Preferential concentration of certain elements in smaller aerosols emitted from aircraft enginesAerosols from aircraft engines were collected with an eight-stage cascade sampler for a period of 24 h. The aerosol samples from each stage were analyzed for their elemental composition using the proton-induced X-ray emission (PIXE) technique. Seventeen elements (Si, P, S, Cl, K, Ca, Ti, V, Fe, Ni, Cu, Zn, Br, Sr, Nb, Sn, and Pb) were positively identified and quantitated at each stage. Six elements (S, Ca, Fe, Zn, Sn, and Pb) showed a fractional concentration increase with decreasing aerosol size. Similar, but less well-defined, trends were also observed for V and Ni. Silicon and chlorine, on the other hand, showed an opposite trend. Neutron-activation analysis of bulk aerosol samples collected every 2 h over the same period showed a correlation between concentration of Si, Ca, V, Ti, Zn, Br, and Sn and the density of air traffic at the airport. Analysis of the aviation-fuel samples by PIXE indicates that major fractions of Pb, Sn, Br, Zn, Ni, Fe, V, Ca, and S observed in these aerosol studies come from the aircraft engine exhaust.
Document ID
19760027099
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Jolly, R. K.
(College of William and Mary Newport News, VA, United States)
Gupta, S. K.
(College of William and Mary Newport News, VA, United States)
Randers-Pehrson, G.
(College of William and Mary Newport News, VA, United States)
Buckle, D. C.
(College of William and Mary Newport News, VA, United States)
Thornton, W. B.
(College of William and Mary Newport News, VA, United States)
Aceto, H., Jr.
(College of William and Mary Newport News, Va., United States)
Singh, J. J.
(College of William and Mary Newport News, VA, United States)
Woods, D. C.
(NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 8, 2013
Publication Date
October 1, 1975
Publication Information
Publication: Journal of Applied Physics
Volume: 46
Subject Category
Environment Pollution
Accession Number
76A10065
Distribution Limits
Public
Copyright
Other

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