Determination of Ni, Cr, Mo in Low Alloy Steel Reference Materials by Isotope Dilution Inductively Coupled Plasma Mass Spectrometry

동위원소희석 유도결합플라스마질량분석법에 의한 저 합금강 표준시료중의 Ni, Cr, Mo의 분석

  • Suh, Jungkee (Division of Chemical Metrology and Materials Evaluation, Korea Research Institute of Standards and Science) ;
  • Woo, Jinchoon (Division of Chemical Metrology and Materials Evaluation, Korea Research Institute of Standards and Science) ;
  • Min, Hyungsik (Division of Chemical Metrology and Materials Evaluation, Korea Research Institute of Standards and Science) ;
  • Yim, Myeongcheul (Division of Chemical Metrology and Materials Evaluation, Korea Research Institute of Standards and Science)
  • 서정기 (한국표준과학연구원 무기분석그룹) ;
  • 우진춘 (한국표준과학연구원 무기분석그룹) ;
  • 민형식 (한국표준과학연구원 무기분석그룹) ;
  • 임명철 (한국표준과학연구원 무기분석그룹)
  • Received : 2002.10.11
  • Accepted : 2002.12.10
  • Published : 2003.02.25

Abstract

Isotope dilution mass spectrometry (IDMS) was applied to the determination of Ni, Cr, Mo in low alloy steel reference materials. The Mo isotope ratio measurement was performed by dynamic reaction cell inductively coupled plasma mass spectrometry (DRC-ICP/MS) using ammonia as a reaction cell gas. In the case of Ni and Cr measurement, all data were obtained at medium resolution mode (m/${\Delta}m=3000$) of double focusing sector field high resolution inductively coupled plasma mass spectrometry (HR-ICP/MS). For the method validation of the technique was assessed using the certified reference materials such as NIST SRM 361, NIST SRM 362, NIST SRM 363, NIST SRM 364, NIST SRM 36b. This method was applied to the determination of Ni, Cr and Mo in low alloy steel sample (CCQM-P25) provided by NMIJ for international comparison study.

Keywords

IDMS;DRC-ICP/MS;HR-ICP/MS;Ni;Cr;Mo;low alloy steel;NIST SRM

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