Development of an Axially Viewed Inductively Coupled Plasma for Atomic Emission Spectrometry and Comparison between the Detection Limits of Lead

원자방출 분광분석을 위한 수평형 유도결합 플라스마의 개발과 납 검출한계 비교

  • Cho, Sung Il (Korea Research Institute of Standards and Science, Inorganic Analytical Group) ;
  • Han, Myung Sub (Korea Research Institute of Standards and Science, Inorganic Analytical Group) ;
  • Lee, Sang Hwa (Korea Research Institute of Standards and Science, Inorganic Analytical Group) ;
  • Lee, Joung Hae (Korea Research Institute of Standards and Science, Inorganic Analytical Group) ;
  • Woo, Jin Chun (Korea Research Institute of Standards and Science, Inorganic Analytical Group)
  • 조성일 (한국표준과학연구원 무기분석그룹) ;
  • 한명섭 (한국표준과학연구원 무기분석그룹) ;
  • 이상화 (한국표준과학연구원 무기분석그룹) ;
  • 이종해 (한국표준과학연구원 무기분석그룹) ;
  • 우진춘 (한국표준과학연구원 무기분석그룹)
  • Published : 19970600

Abstract

An ICP(Inductively Coupled Plasma) emission spectrometer was developed with an axially viewed ICP source incorporated by a 5-turned induction coil and a torch, outer quartz tube of which was 50 mm longer than that used in conventional ICP/AES(Inductively Coupled Plasma Atomic Emission Spectrometry). The Optimization of the system has been performed in terms of the determination of signal-to-noise ratio and background intensity at various rf powers, sample flow rates, argon gas flow rates and cut-off gas flow rates. The spectro-analytical characteristics of the spectrum obtained between 200 and 500 nm was revealed to be similar compared with a vertically viewed ICP source. The detection limit of Pb(Ⅱ) at 220.35 nm was 11 ppb which was 5 times lower than that obtained with a vertically viewed ICP source.

Keywords

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