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Analysis of aerosol particles and coarse particulate matter concentrations in Chillan, Chile, 2001-2003

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2006-02
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Celis, José E.
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Analysis of aerosol particles and coarse particulate matter concentrations in Chillan, Chile, 2001-2003
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Author
  • Celis, José E.;
  • Flocchini, Robert G.;
  • Carvacho, Omar F.;
  • Morales Peña, José;
  • Zaror, Claudio A.;
  • Inzunza, Juan C.;
  • Pineda, Mario J.;
Abstract
Daily particle samples were collected in Chillan, Chile, at six urban locations from September 1, 2001, through September 30, 2003. Aerosol samples were collected using monitors equipped with a Sierra Andersen 246-b cyclone inlet on Teflon filters. Average concentrations of coarse particulate matter (PM10) for the 2001-2003 period ranged from 43.4 mu g/m(3) to 81.8 mu g/m(3) across the six sites. Annual PM,, concentration levels exceeded the European Union concentration limits. Mean PM10 levels during the cold season (April through September) were more than twice as high as those observed in the warm season (October through March). Average contributions to PM10 from organic matter, soil dust, nitrate (NO3-), elemental carbon, ammonium (NH4+), and sulfate (SO42-) were 31%, 27%, 11%, 8%, 7%, and 5%, respectively. The chemical analyses indicated that carbonaceous substances were the most abundant components of PM10 in cold months, whereas crustal material was the most abundant component of PM,, during warm months. Higher concentration levels were observed in the downtown area suggesting a clear anthropogenic origin, whereas in the rural sites the source was mainly natural, such as resuspended soil dust associated with traffic on unpaved roads and agricultural activities.
Identifier
URI: https://repositorio.uchile.cl/handle/2250/118773
ISSN: 1047-3289
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JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION Volume: 56 Issue: 2 Pages: 152-158 Published: FEB 2006
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