Raman scattering and the characterisation of atmospheric aerosol particles

  title={Raman scattering and the characterisation of atmospheric aerosol particles},
  author={Hal J. Rosen and Tihomir. Novakov},
AIRBORNE particulates have a major role in the air pollution problem. They are responsible for acid rain, reduced visibility, and, in certain size ranges, are deposited in the lungs where they can cause various disorders. Considerable effort has been expended in the analysis of these particulates using techniques such as wet chemistry, X-ray fluorescence, infrared spectroscopy and ESCA. Yet there are still great uncertainties as to the chemical form and origin of many of the particulate species… Expand
Raman spectra of atmospheric particles measured in Maryland, USA over 22.5 h using an automated aerosol Raman spectrometer
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The result shows that the combined non-destructive methods are efficient to trace the sources of PM2.5. Expand
Raman spectra of atmospheric aerosol particles: Clusters and time-series for a 22.5 hr sampling period
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A simplified approach involving Ag foil substrates was developed to push SERS towards more relevant particle sizes, and SERS-enabled detection of 150 nm size-selected ambient particles represent the smallest individual aerosol particles analyzed by Raman microspectroscopy to date, and the first time atmospheric particles have been measured at sizes approaching the atmospheric number size distribution mode. Expand


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Experimental evidence is presented which shows that finely divided carbon (soot) particles may play a major role in the catalytic oxidation of sulfur dioxide to sulfate in polluted atmospheres. Expand
Raman Spectrum of Graphite
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