Organic compounds in radiation fogs in Davis (California)

Pierre Herckes, Michael P. Hannigan, Laurie Trenary, Taehyoung Lee, Jeffrey L. Collett

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

New stainless steel active fogwater collectors were designed and used in Davis (CA, USA) to collect fogwater for the speciation of organic matter. Organic compounds in fog samples were extracted by liquid-liquid extraction and analyzed by gas chromatography coupled to mass spectrometry. Numerous organic compounds, including various alkanes, polycyclic aromatic hydrocarbons (PAH) and alkanoic acids, have been identified in the fogwater samples. Higher molecular weight (MW) compounds are preferentially associated with an insoluble phase inside the fog drops, whereas lower molecular weight and more polar compounds are found predominantly in the dissolved phase. Concentrations in the dissolved phase were sometimes much higher than estimated by the compounds' aqueous solubilities.

Original languageEnglish (US)
Pages (from-to)99-108
Number of pages10
JournalAtmospheric Research
Volume64
Issue number1-4
DOIs
StatePublished - Sep 1 2002
Externally publishedYes

Keywords

  • Cloud chemistry
  • Fog chemistry
  • Organic matter
  • Solubility

ASJC Scopus subject areas

  • Atmospheric Science

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