Wood smoke contribution to winter aerosol in Fresno, CA

Courtney A. Gorin, Jeffrey L. Collett, Pierre Herckes

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

In an effort to better quantify wintertime particulate matter (PM) and the contribution of wood smoke to air pollution events in Fresno, CA, a field campaign was conducted in winter 2003-2004. Coarse and fine daily PM samples were collected at five locations in Fresno, including residential, urban, and industrial areas. Measurements of collected samples included gravimetric mass determination, organic and elemental carbon analysis, and trace organic compound analysis by gas chromatograph mass spectrometry (GC/MS). The wood smoke tracer levoglucosan was also measured in aqueous aerosol extracts using high-performance anion exchange chromatography coupled with pulsed amperometric detection. Sample preparation and analysis by this technique is much simpler and less expensive than derivatized levoglucosan analysis by GC/MS, permitting analysis of daily PM samples from all five of the measurement locations. Analyses revealed low spatial variability and similar temporal patterns of PM2.5 mass, organic carbon (OC), and levoglucosan. Daily mass concentrations appear to have been strongly influenced by meteorological conditions, including precipitation, wind, and fog events. Fine PM (PM 2.5) concentrations are uncommonly low during the study period, reflecting frequent precipitation events. During the first portion of the study, levoglucosan had a strong relationship to the concentrations of PM 2.5 and OC. In the later portion of the study, there was a significant reduction in levoglucosan relative to PM2.5 and OC. This may indicate a change in particle removal processes, perhaps because of fog events, which were more common in the latter period. Combined, the emissions from wood smoke, meat cooking, and motor vehicles appear to contribute ∼65-80% to. measured OC, with wood smoke, on average, accounting for ∼41% of OC and ∼18% of PM2.5 mass. Two residential sites exhibit somewhat higher contributions of wood smoke to OC than other locations.

Original languageEnglish (US)
Pages (from-to)1584-1590
Number of pages7
JournalJournal of the Air and Waste Management Association
Volume56
Issue number11
StatePublished - 2006

Fingerprint

Particulate Matter
Organic carbon
Aerosols
Smoke
smoke
particulate matter
Wood
organic carbon
aerosol
winter
Fog
fog
Mass spectrometry
mass spectrometry
Gases
Meats
Precipitation (meteorology)
Cooking
sample preparation
Chromatography

ASJC Scopus subject areas

  • Atmospheric Science
  • Waste Management and Disposal
  • Environmental Engineering
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Wood smoke contribution to winter aerosol in Fresno, CA. / Gorin, Courtney A.; Collett, Jeffrey L.; Herckes, Pierre.

In: Journal of the Air and Waste Management Association, Vol. 56, No. 11, 2006, p. 1584-1590.

Research output: Contribution to journalArticle

Gorin, Courtney A. ; Collett, Jeffrey L. ; Herckes, Pierre. / Wood smoke contribution to winter aerosol in Fresno, CA. In: Journal of the Air and Waste Management Association. 2006 ; Vol. 56, No. 11. pp. 1584-1590.
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