Analysis of Automotive Paints using Pyrolysis-Gas Chromatography

열분해-가스크로마토그라피에 의한 자동차 페인트 분석

  • Shon, Sung-Kun (Department of Forensic Science, The National Institute of Scientific Investigation) ;
  • Park, Ha-Sun (Department of Forensic Science, The National Institute of Scientific Investigation) ;
  • Lee, Jin-Sook (Department of Forensic Science, The National Institute of Scientific Investigation) ;
  • Hong, Sung-Wook (Department of Forensic Science, The National Institute of Scientific Investigation) ;
  • Park, Sung-Woo (Department of Forensic Science, The National Institute of Scientific Investigation) ;
  • Cho, Sung-Hye (Department of Chemistry, Chungang University)
  • 손성건 (국립과학수사연구소 법과학부) ;
  • 박하선 (국립과학수사연구소 법과학부) ;
  • 이진숙 (국립과학수사연구소 법과학부) ;
  • 홍성욱 (국립과학수사연구소 법과학부) ;
  • 박성우 (국립과학수사연구소 법과학부) ;
  • 조성희 (중앙대학교 화학과)
  • Received : 1999.07.23
  • Published : 2000.02.25

Abstract

The automotive paints could be generally differentiated by color, layer sequence and chemistry of the paint layers comprising each of the topcoat and the primer system. The successful identification of hit-andrun a and traffic accidental vehicles from evidential paint fiagments is greatly facilitated with a comprehensive laboratory collection of reference paint samples and the technique for direct analysis without sample preparation. The Pyrolysis-Gas Chromatography(PGC) is a precise and reliable method for performing both quantitative and qualitative analysis of polymeric materials and forensic samples. Our Forensic Laboratory is conducting the examination and identification of 73 reference paint samples; 4 colors of each domestic automotive make that is popular in Korea, by Curie Point Pyrolyzer(JHP-3) and GC with capillary column(ultra alloy-5). This method can be used not only to compare paint traces with their suspected sources, but also to identify the type, make and model of the automotive car.

Keywords

automotive paints;hit-and-run;PGC

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