The Journal of the Petrological Society of Korea (암석학회지)

The Petrological Society of Korea (한국암석학회)
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Evaluation of LA-ICP-MS Whole Rock Trace Element Analysis Using Fused Glass Bead of Silicate Rocks

규산염 암석의 알칼리 용융 유리원판에 대한 LA-ICP-MS 전암 미량원소 분석법 평가

  • Kim, Myong Jung (Department of Earth Environmental Sciences, Pukyong National University) ;
  • Kim, Taehoon (Division of Polar Earth-System Sciences, Korea Polar Research Institute) ;
  • Park, Kye-Hun (Department of Earth Environmental Sciences, Pukyong National University) ;
  • Lee, Ye Ji (Department of Earth Environmental Sciences, Pukyong National University) ;
  • Yang, Yun Seok (Division of Polar Earth-System Sciences, Korea Polar Research Institute) ;
  • Moon, Jeongjin (Division of Polar Earth-System Sciences, Korea Polar Research Institute)
  • 김명정 (부경대학교 환경해양대학 지구환경과학과) ;
  • 김태훈 (극지연구소 극지시스템연구부) ;
  • 박계헌 (부경대학교 환경해양대학 지구환경과학과) ;
  • 이예지 (부경대학교 환경해양대학 지구환경과학과) ;
  • 양윤석 (극지연구소 극지시스템연구부) ;
  • 문정진 (극지연구소 극지시스템연구부)
  • Received : 2015.06.11
  • Accepted : 2015.06.26
  • Published : 2015.06.30
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Abstract

Using laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), we evaluated the reliability of trace element abundance data measured from the silicate rock references of JR-3, JG-3, JGb-1 and JB-1b using glass discs made by alkali fusion. For 28 elements including rare earth elements, relative standard deviations (RSD) are better than 7% in case when the concentrations of the elements in the rock samples are greater than 10 ppm. However, RSD shows somewhat increased values for the concentrations less than 10 ppm, but never exceeds 25%. Compared with previously reported averages of the compiled abundance data, our data display satisfactory results for the most cases with differences less than 10%. We suggest that LA-ICP-MS analysis using fused glass beads is a reliable, precise and time-saving method of trace element analysis for the silicate rocks spanning from mafic to felsic compositions.

알칼리 용융법으로 제조한 규산염 암석 참조물질(JR-3, JG-3, JGb-1, JB-1b) 유리원판에 대하여 레이저 삭마-유도결합 플라즈마 질량분석법(LA-ICP-MS)으로 미량원소를 분석한 결과의 신뢰도를 평가하였다. 희토류 원소를 포함하는 28개 원소 분석결과시 암석내 농도가 10 ppm 이상인 경우에는 측정의 상대표준편차(RSD)가 7% 이하이었으며, 10 ppm이하의 농도에서는 RSD가 다소 증가하기도 하지만 25%를 넘지는 않았다. 동일한 암석 참조물질로부터 이전에 보고된 분석자료의 평균과 비교하면 대부분의 경우 최대 10% 내외의 편차로 잘 일치하는 만족스러운 결과를 나타낸다. 알칼리 용융 유리원판을 이용한 LA-ICP-MS 분석법은 용액 ICP-MS 분석법에 비하여 전처리 과정을 대폭 줄이고 빠른 시간 내에 비교적 높은 정밀도로 고철질에서 규장질까지 대부분 암석의 미량원소를 분석할 수 있는 방법으로 평가된다.

Keywords

References

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