Determination of the Impurities in Isoprene by GC/MS

GC/MS를 이용한 이소프렌 중 불순물 분석

  • Lee, Hyunjoo (CFC Alternatives Research Center, Korea Institute of Science and Technology) ;
  • Ahn, Byoung Sung (CFC Alternatives Research Center, Korea Institute of Science and Technology) ;
  • Suh, InSuk (CFC Alternatives Research Center, Korea Institute of Science and Technology) ;
  • Kwon, Young Soo (CFC Alternatives Research Center, Korea Institute of Science and Technology)
  • 이현주 (한국과학기술연구원 CFC 대체연구센터) ;
  • 안병성 (한국과학기술연구원 CFC 대체연구센터) ;
  • 서인석 (한국과학기술연구원 CFC 대체연구센터) ;
  • 권영수 (한국과학기술연구원 CFC 대체연구센터)
  • Received : 2001.04.19
  • Published : 2001.08.25

Abstract

The impurities in isoprene were determined using GC/MS. There were good linearities (above $R^2=0.996$) in the range of the $1.0-50{\mu}g/mL$ and 0.5-5.0%, and the detection limits of the method were below $0.1{\mu}g/mL$ for each impurities. Reagent-grade isoprene contained isopropenyl acetylene and 2-butyne at $10-50{\mu}g/mL$ and the concentrations of cis-piperylene, trans-piperylene, cyclopentadiene and dicyclopentadiene were below $1{\mu}g/mL$. The analysis confirmed that the reagent grade isoprene could be obtained from the distillation of C5 fractions.

Keywords

isoprene;GC/MS;impurity