東京都かすみケ関における空気中のホルムアルデヒド濃度

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タイトル別名
  • Formaldehyde Concentration of Ambient Air at Kasumigaseki in Tokyo
  • トウキョウト カスミ ケ カン ニ オケル クウキチュウ ノ ホルムアルデヒド

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Since January 1968, the continuous analyzer of formaldehyde, developed by the authors, has been operated at the National Aatoexhaust Monitoring Kasumigaseki Station in Tokyo.<BR>This report presents summarized results of the measurement of formaldehyde from 1968 to 1976. It was observed that the hourly, daily, monthly, and yearly average concentrations were 1 to 73, 1 to 28.4, 3.1 to 19.1, and 4.6 to 10.5 ppb, respectively. Daily average concentration showed logarithmic normal distribution. Relationship between the daily and hourly average concentrations (daily maximum) was about 1 to 2. Daily maximum value was observed at ca. noonday and yearly maximum was found during June and August.

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