Indoor Air Pollution by 2-Butanone Oxime emitted from Silicone Sealant

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  • TSUNODA Tokuko
    Department of Pharmaceutical and Environmental Sciences, Tokyo metropolitan Institute of Public Health
  • ONUKI Aya
    Department of Pharmaceutical and Environmental Sciences, Tokyo metropolitan Institute of Public Health
  • OKUBO Tomoko
    Department of Pharmaceutical and Environmental Sciences, Tokyo metropolitan Institute of Public Health
  • SAITO Ikue
    Department of Pharmaceutical and Environmental Sciences, Tokyo metropolitan Institute of Public Health
  • SUZUKI Toshinari
    Department of Pharmaceutical and Environmental Sciences, Tokyo metropolitan Institute of Public Health
  • HOSAKA Mitsugu
    Department of Pharmaceutical and Environmental Sciences, Tokyo metropolitan Institute of Public Health

Bibliographic Information

Other Title
  • シリコンシーラント由来の2-ブタノンオキシムによる室内空気汚染
  • シリコンシーラント ユライ ノ 2-ブタノンオキシム ニ ヨル シツナイ クウキ オセン

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Description

The process of monitoring of volatile organic compounds present in indoor air at a newly constructed building was undertaken in 2015. We detected 2-butanone oxime at a maximum concentration of 3,570 g/m3. The emission source of 2-butanone oxime was silicone sealant used in the construction of the building. The adsorption of 2-butanone oxime with thermal desorption using a Tenax TA sampler was suitably accurate to trap 2-butanone oxime under both low- and high- humidity conditions. It was confirmed that 2-butanone oxime was stable under high humidity (relative humidity: 80%), and the Tenax TA sampler, with a flow rate of 0.1 L/min, was able to stably measure data for 2 h. The emission source of both 2-butanone oxime and 2-butanone was a silicone sealant used in the building. This was determined by placing a glass plate coverd with the silicone sealant in a Tedlar® Bag for 2 weeks, and analyzed by Gas chromatograph/Mass spectrometer (GC/MS). Air in a Tedlar® Bag was sampling every other day throughout the 2-week period. A maximum concentration of 2-butanone oxime was observed after approximately 1 week, and it gradually decreased thereafter. The concentration of 2-butanone in the bag gradually increased throughout the sampling period; however, its production rate was low in comparison to the decline rate of 2-butanone oxime.

Journal

  • Indoor Environment

    Indoor Environment 19 (2), 131-137, 2016

    Society of Indoor Environment, Japan

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