• 제목/요약/키워드: Dipentylamine

검색결과 2건 처리시간 0.018초

GC/FID에 의한 작업환경중 메틸 이소시아네이트의 분석 (The Determination of Methyl Isocyanate in the Workplace by Gas Chromatography with Flame Ionization Detector)

  • 이은정;유철;한영선;조영봉
    • 한국산업보건학회지
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    • 제11권3호
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    • pp.249-253
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    • 2001
  • The purpose of this study is the development of the simple and precise sampling and analysis method of methyl isocyanate(MIC) in the work place as their secondary aliphatic amine derivatives by gas chromatography with flame ionization detector. The urea derivatives are quantitatively and simultaneously derived from MIC with secondary aliphatic amines such as dipropylamine(DPA), dibutylamine(DBA), and dipentylamine (DAA) in methylene chloride. The method is based on sampling glass tube in XAD-2 resin which is coated with secondary aliphatic amines. The samples are desorbed by $2m{\ell}$ methylene chloride and analysed using gas chromatography with flame ionization detector(GC/FID). In the results, the detection limit of the overall procedure and reliable quantity are $0.020-0.027{\mu}g$($1.347-1.740{\mu}g/m^3$(0.529-0.684 ppb) based on a 15 L air volume) MIC per sample. The average desorption efficiencies are 97.96 - 101.23 %. The results of versus storage time are high and stable recovery rates.

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에틸 이소시아네이트와 프로필 이소시아네이트의 GC/FID 분석 (The Determination of Ethyl Isocyanate and Propyl Isocyanate by GC/FID)

  • 이은정;유철;최홍순;박준호;윤주송;조영봉
    • Environmental Analysis Health and Toxicology
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    • 제15권1_2호
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    • pp.53-59
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    • 2000
  • The purpose of this study is the development of the simple and precise determination method of ethyl isocyanate (EIC) and propyl isocyanate (PIC) through derivatization using secondary aliphatic amines by gas chromatography with flame ionization detector. The urea derivatives are quantitatively and simultaneously derived from EIC and PIC with secondary aliphatic amines such as dipropylamine, dibutylamine. and dipentylamine in methylene chloride, and confirmed by thin layer chromatography and gas chromatography with mass selective detector. For GC/FID, according to the increasing carbon atom of the amines, the retention time and peak area of the urea derivatives are increased. The instrumental detection limits for EIC and PIC were about 23.3∼34.8 $\mu\textrm{g}$ and 21.6∼28.9 $\mu\textrm{g}$, respectively.

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