An automatic measurement of gaseous nitric acid in the urban atmosphere by combination of a diffusion scrubber and ion chromatography

Keisuke Tsukamoto, Shigeru Tanaka, Yoshikazu Hashimoto, Tamotsu Inomata, Yuzuru Hanaoka

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5 Citations (Scopus)


In this study, an automatic measurement of HNO3 was investigated by using a diffusion scrubber and ion chromatography. The collection efficiency of HNO3 standard gas of 36 μg/m3 was 93.1°3.3% (n=4) by using 50 cm lengh of the diffusion scrubber at 1 2/min of air flow. The lower detection limit of HN03 by this method was 0.01 μg/m3 at sampling volume of 60 60 The concentration of HNO3 in the urban atmosphere is a few μg/m3 It is suitable for this method to measure HNO3 at ambient level.

Original languageEnglish
Pages (from-to)1025-1028
Number of pages4
JournalAnalytical Sciences
Publication statusPublished - 1991



  • diffusion scrubber
  • gaseous nitric acid
  • ion chromatography
  • porous polytetra-fluoroethylene(PPTFE) tube

ASJC Scopus subject areas

  • Analytical Chemistry

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