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Application of Proton Induced X-Ray Emission Analysis to the St. Louis Regional Air Pollution Study

Författare:
Publiceringsår: 1975
Språk: Engelska
Sidor: 588-597
Publikation/Tidskrift/Serie: Advances in X-Ray Analysis
Volym: 18
Dokumenttyp: Artikel
Förlag: Plenum Publishing Corporation, New York, USA

Sammanfattning

The St Louis aerosol was sampled during the period 16-22 August 1973 simultaneously at two locations using cascade impactors for sequential 12-hour samples. The six particle size fractions of each sampling were individually analyzed using PIXE for elements from S to Br and beyond and for heavy elements including Pb which permitted time variations of concentrations and particle size distributions to be followed and related to meteorological changes during the sampling period. In addition, the data were compared with average levels of the elements in coastal north Florida and maritime Bermuda as well as at a third St. Louis site. From this it appeared that some of the concentrations in St. Louis were at natural levels whereas others appeared to be higher and linked to air pollution sources. These relationships and others in this study may lead to criteria for distinguishing between pollutants and natural background in urban aerosols.

Disputation

Nyckelord

  • Earth and Environmental Sciences
  • Physics and Astronomy
  • Chemistry
  • PIXE
  • proton-induced x-ray emission
  • urban aerosol
  • elemental composition
  • particle size fractions

Övrigt

Published
Yes

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