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

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

doi:10.1007/BF00115225

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

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

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

Gaseous formic acid (HCOOH_g) and acetic acid (CH₃COOH_g) 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 HCOOH_g concentration was found to be 7.3±2.5 ppbv. The mean CH₃COOH_g 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 HCOOH_g=4.4±2.7 ppbv, mean CH₃COOH_g=1.4±0.5 ppbv). In October, concentrations of both acids were higher in daylight hours than at night; sporadic high HCOOH_g concentrations were observed. In both experiments the ratio HCOOH_g/CH₃COOH_g of individual samples was usually ≥2.0 (mean ratio of 2.0 in August, 3.1 in October).

Original language	English
Pages (from-to)	85-94
Number of pages	10
Journal	Journal of Atmospheric Chemistry
Volume	14
Issue number	1-4
DOIs	https://doi.org/10.1007/BF00115225
Publication status	Published - 1992 Apr 1

Keywords

acetic acid
formic acid
nebulizer sampler
urban atmosphere

ASJC Scopus subject areas

Environmental Chemistry
Atmospheric Science

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10.1007/BF00115225

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

abstract = "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).",

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AU - Schultz Tokos, J. J.

AU - Tanaka, S.

AU - Morikami, T.

AU - Shigetani, H.

AU - Hashimoto, Y.

PY - 1992/4/1

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N2 - 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).

AB - 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).

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