Gaseous formic and acetic acids in the atmosphere of Yokohama, Japan

J. J. Schultz Tokos, S. Tanaka, T. Morikami, H. Shigetani, Y. Hashimoto

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29 Citations (Scopus)


Gaseous formic acid (HCOOHg) and acetic acid (CH3COOHg) were measured every 30 minutes during a 10 hour daylight period in August, and a 24 hour period in October, 1990 in the urban atmosphere of Yokohama, Japan. An aqueous nebulizer sampler and ion-chromatography exclusion (ICE) were used for the measurements. In the August experiment (0800-1800 local time) the mean HCOOHg concentration was found to be 7.3±2.5 ppbv. The mean CH3COOHg concentration was 3.8±1.2 ppbv. In the 24 hour experiment in October, concentrations of both acids were lower between 0800-1800 than during the same time-period in August (mean HCOOHg=4.4±2.7 ppbv, mean CH3COOHg=1.4±0.5 ppbv). In October, concentrations of both acids were higher in daylight hours than at night; sporadic high HCOOHg concentrations were observed. In both experiments the ratio HCOOHg/CH3COOHg of individual samples was usually ≥2.0 (mean ratio of 2.0 in August, 3.1 in October).

Original languageEnglish
Pages (from-to)85-94
Number of pages10
JournalJournal of Atmospheric Chemistry
Issue number1-4
Publication statusPublished - 1992 Apr
Externally publishedYes


  • acetic acid
  • formic acid
  • nebulizer sampler
  • urban atmosphere

ASJC Scopus subject areas

  • Environmental Chemistry
  • Atmospheric Science


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