2,4‐ジニトロフェニルヒドラジン含浸シリカゲル法によるアルデヒド類測定における二酸化窒素の影響

書誌事項

タイトル別名
  • Nitrogen dioxide interference in the determination of aldehydes by assaying on 2,4-dinitrophenylhydrazine-coated silica gel.
  • 2 4 ジニトロフェニルヒドラジン ガンシン シリカゲルホウ ニ ヨル アルデヒドルイ ソクテイ ニ オケル 2サンカ チッソ ノ エイキョウ

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抄録

The influence of nitrogen dioxide (NO2) under humid condition on the determination of formaldehyde in air was examined using the 2, 4-dinitrophenylhydrazine (DNPH) method. In humid air, NO2 reacts with DNPH, yielding 2, 4-dinitroaniline and 2, 4-dinitrophenylazide as the main reaction products. 2, 4-Dinitroaniline and formaldehyde-2, 4-dinitrophenylhydrazone behave similarly when examined by cross-linked 5% phenyl methyl siloxane capillary column gas chromatography. Chromatographic separation was performed using a cross-linked methyl silicone column and an optimum column temperature program. The reaction between DNPH and NO2 was hindered by using magnesium perchlorate cartridges as a desiccant, mildly heating DNPH coated cartridges to decrease relative humidity and especially by using 3, 3-dimethylnaphtidine coated celite as an NO2 scrubber.

収録刊行物

  • 大気環境学会誌

    大気環境学会誌 36 (4), 195-207, 2001

    公益社団法人 大気環境学会

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