Improved Separation of Organic Explosives by Modified Micellar Electrokinetic Capillary Chromatography

Modified Micellar Electrokinetic Capillary Chromatography에 의한 폭약 성분의 분리능 향상

  • Park, Sung-Woo (Department of Forensic Science, National Institute of Scientific Investigation) ;
  • Yang, Young-Geun (Department of Forensic Science, National Institute of Scientific Investigation) ;
  • Hong, Sungwook (Department of Forensic Science, National Institute of Scientific Investigation) ;
  • Kim, Taek-Jae (Department of Chemistry, Kyonggi University)
  • 박성우 (국립과학수사연구소 법과학부) ;
  • 양영근 (국립과학수사연구소 법과학부) ;
  • 홍성욱 (국립과학수사연구소 법과학부) ;
  • 김택제 (경기대학교 화학과)
  • Received : 1997.03.31
  • Published : 1997.10.25

Abstract

Among various CE separation methods, micellar electrokinetic capillary chromatography(MECC) method using sodium dodecylsulfate(SDS) provides rapid and accurate separation of organic explosive constituents with easy. The running buffer was composed with 2.5 mM borate and 25mM SDS(pH 8.5). Addition of 1M urea and 10% organic modifiers (acetonitrile, methanol and ethanol) improves the resolution of adjacent explosive constituents. When 15 explosive constituents were developed in MECC, most constituents were separated successively while RDX/TNB and DNN/DEP were not, and detection limits of separated compounds are in range of 1 to 4 ppm.

Keywords

micellar electrokinetic capillary chromatography;explosive constituents;sodium dodecylsulfate;urea;organic modifier