Analysis of Cast Iron by Glow Discharge Emission Spectrometry

글로우 방전/방출분광분석법에 의한 주철시료의 분석

  • Cho, K.H. (Inorganic Analysis Laboratory, KRISS) ;
  • Woo, J.C. (Inorganic Analysis Laboratory, KRISS) ;
  • Han, M.S. (Inorganic Analysis Laboratory, KRISS)
  • 조경행 (한국표준과학연구원 무기분석연구실) ;
  • 우진춘 (한국표준과학연구원 무기분석연구실) ;
  • 한명섭 (한국표준과학연구원 무기분석연구실)
  • Received : 1993.06.28
  • Published : 1993.08.25

Abstract

Generally, it is difficult to analyze cast iron samples with spark discharge emission spectrometry since the content of carbon in these samples is high as a few percent. The cast iron samples were analyzed with the developed glow discharge emission spectrometer composed of glow discharge emission source and polychromator. The discharge condition of glow discharge lamp(GDL) has been optimized by variation of Ar gas pressure, discharge voltage and discharge time. Under the optimum conditions obtained in this work, relationships between the measured emission intensities and concentration of two types of cast iron standard samples(BAS, LECO) were investigated. Most of elements(Mn, Si, P, S etc.) showed the good linearity in one calibration curve. And the carbon showed slightly the systematic difference according to the type of standard samples.

Keywords

Glow discharge;Emission spectrometry;Cast iron analysis