The Journal of the Petrological Society of Korea (암석학회지)

The Petrological Society of Korea (한국암석학회)
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A Role of Standard Material in Rare Earth Element Analysis by ICP-MS

ICP-MS를 이용한 희토류원소 분석시 표준시료의 선택이 미치는 영향

  • Lee Seung-Gu (Groundwater and Geothermal Resources Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Kim Kun-Han (Geological and Environmental Hazard Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Song Yong Sun (Department of Environmental Geosciences, Pukyong National University) ;
  • Kim Yongje (Groundwater and Geothermal Resources Division, Korea Institute of Geoscience and Mineral Resources)
  • 이승구 (한국지질자원연구원 지하수지열연구부) ;
  • 김건한 (한국지질자원연구원 지질환경재해연구부) ;
  • 송용선 (부경대학교 환경지질과학과) ;
  • 김용제 (한국지질자원연구원 지하수지열연구부)
  • Published : 2005.12.01
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Abstract

In order to clarify the effect of standard rock material in the chemical analysis of rare earth element abundance with ICP-MS, we measured rare earth element abundance of KIGAM granite standard rock material (KG-1), USGS granite standard rock material (G-2), GSJ granite standard rock materials (JG-1a and JG-2). In REE analysis, we used conventional calibration standard solutions, KG-1, JG-1a, JG-2 and G-2 as standard material, respectively. Chondrite-normalized LREE patterns of low granite standard material correspond well each other in the recommended value and the estimated value regardless of a kind of standard rock. However, the HREE patterns of the estimated value based on G-2 or JG-2 and the recommended value are different from each other. Such difference may be due to the wrong recommended value or a specific geochemical properly of the standard rock material itself, The chondrite-normalized REE patterns of four standard rock materials estimated on the basis of KG-1 or JG-1 a show little deviation compared to the those of the recommended values. This suggests that KG-1 and JG-1a may be a optimum standard material for granitoids.

ICP-MS로 화강암질 암석내 희토류원소의 함량 분석시 표준시료의 선택이 어느 정도 영향을 주는 지를 밝혀내기 위해, 상업용 표준시료(ACCU-standard, No. Cal-1), 화강암의 한국산 표준시료(KG-1), 미국산 표준시료(G-2), 일본산 표준시료(JC-1a, JC-2)를 각각 기준시료로 하여 각각의 희토류원소 함량을 측정하였다. 실험결과에 의하면, 경희토류(La-Gd) 분포도는 표준시료의 변화에 관계없이 대체적으로 추천값과 측정값 모두 일치하였다. 그러나 G-2 혹은 JG-2를 기준으로 측정했을 시, 다른 표준시료의 추천값과 측정값에 의한 중희토류(Gd-Lu)의 분포도는 많은 차이가 발생되었다. 이는 표준시료의 추천값의 오류 혹은 표준시료 암석의 지구화학적 특성에 기인된다. KG-1 혹은 JG-1a를 기준시료로 하여 희토류원소 함량을 측정했을 경우에는 G-2나 JG-2를 기준시료로 했을 때보다 추천값과 측정값에 의한 희토류원소의 분포도의 어긋남이 비교적 약한 편이다. 이는 국내 화강암류의 희토류원소 함량분석에 있어서의 표준시료로서 KG-1 혹은 JG-1a가 보다 더 유용함을 지시해준다.

Keywords

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