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(WFRF:(Akselsson Roland)) pers:(Akselsson Roland) pers:(Winchester John W)
 

Search: (WFRF:(Akselsson Roland)) pers:(Akselsson Roland) pers:(Winchester John W) > X-Ray Techniques fo...

X-Ray Techniques for Aerosol Sulfur Baseline Assessment Along an Urban Freeway

Akselsson, Roland (author)
Lund University,Lunds universitet,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH
Hardy, Ken A (author)
Desaedeler, Georges G (author)
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Winchester, John W (author)
Berg, Walter W (author)
Vandeer Wood, Timothy B (author)
Nelson, J William (author)
Spiller, L L (author)
Wilson, W E (author)
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 (creator_code:org_t)
1976
1976
English.
In: Advances in X-Ray Analysis. ; 19, s. 415-425
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Atmospheric aerosol particles have been sampled near a Los Angeles freeway and analyzed by proton-induced X-ray emission, PIXE, as a sulfur baseline study in September 1974 before 1975-model automobiles, equipped with catalytic emission control devices, appeared in large numbers. The sampling plan was optimized according to the requirements of X-ray analysis techniques, fluctuations in air flow across the freeway, and the time and particle size resolution of the aerosol sampling equipment. During five selected two-hour intervals with cross wind conditions, particles were collected as a function of size by six cascade impactors operating simultaneously on three towers at 2 and 7 meters above road level 35 meters upwind and 35 meters downwind of the traffic lanes. Particles as a function of time were sampled continuously, for the 100-hour duration of the experiment, from the tree 7-meter heights using time series streaker filter samplers with two-hour time resolution. Precise analysis of S, Cl, K, Ca, Fe, Br, and Pb established relationships which permit estimates to be made of future increases in particulate sulfur as a consequence of increased sulfate emissions from catalytic automobiles

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Produktionsteknik, arbetsvetenskap och ergonomi (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Production Engineering, Human Work Science and Ergonomics (hsv//eng)
NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

Keyword

urban aerosol
PIXE
particle size fraction
elemental composition
time resolution

Publication and Content Type

art (subject category)
ref (subject category)

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