4-ニトロアニリンによる大気中の微量の塩素の定量

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タイトル別名
  • THE DETERMINATION OF A SMALL AMOUNT OF CHLORINE IN THE ATMOSPHERE BY USING 4-NITROANILINE
  • 4 ニトロアニリン ニヨル タイキチュウ ノ ビリョウ ノ エンソ ノ テイリ

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抄録

The determination of small amount of chlorine in the atmosphere is carried on ordinarily by o-toluidine method at present. However, this method is not recommended because the issued colour is unstable and o-toluidine itself belongs in the first group member of the Ordinance on Prevention of Particular Chemical Hazards Substances.<BR>Authors recommend 4-nitroaniline method, reported by J. Gabbay etc., because this method is stable and more practical.<BR>Although the colour that issued from the reaction of chlorine with 4-nitroaniline is affected by the co-existence of reducing gas, e.g. SO2, H2S or organic gas, but this effect may be removed by introducing the sample gas into the layer of H2SO4-K2Cr2O7 mixture immersed in glassfiber filter for micro-analysis.<BR>In this paper, influence of pH of the issued colour, stability, stream velocity of samplegas and effect of reducing substance are discussed.

収録刊行物

  • 産業医学

    産業医学 19 (6), 495-498, 1977

    社団法人 日本産業衛生学会

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