Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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A Study on individual Diesel Particles by SEM/EDX

SEM/EDX를 이용한 디젤 분진의 입자별 분석

  • 김혜진 (경희대학교 환경학과 및 환경연구소) ;
  • 이종태 (경희대학교 환경학과 및 환경연구소) ;
  • 김동술 (경희대학교 환경학과 및 환경연구소)
  • Published : 1999.04.01
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Abstract

Scanning electron microscopy (SEM) has played an important role in receptor modeling area because it is a powerful tool for characterizing individual particles. The purpose of the study was to classify individual diesel particles base on statistical analysis and image analysis by SEM/EDX (energy dispersive x-ray analyser). The diesel particles were sampled by both a modified CVS 75 mode and a high speed mode with a chassis dynamometer. The SEM/EDX system provides various physical parameters including particle's particle diameter and chemical information. Thus density and mass of the diesel particle were estimated cased on its chemical composition and further fractal dimensions of the diesel particle were obtained by the Hurst exponent method. The fractal dimension in the sample of modified CVS 75 mode was higher than the high speed mode. Finally, mass fractions for a diesel vehicle as a source profile were estimated cased on a particle class concept.

Keywords

References

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