Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
권호 표지
DOI QR코드

DOI QR Code

A Preliminary Study of Korean Geostansdards Using Mesozoic Granites

중생대 화강암을 이용한 한국산 지질 표준물질 제작을 위한 예비연구

  • Jin, Mi-Eun (Department of Geological Sciences and Research Institute of Natural Sciences, Gyeongsang National University) ;
  • Sun, Gwang Min (Neutron Utilization Research Division, Korea Atomic Energy Research Institute) ;
  • Park, Sang Gu (Department of Geological Sciences and Research Institute of Natural Sciences, Gyeongsang National University) ;
  • Jwa, Yong-Joo (Department of Geological Sciences and Research Institute of Natural Sciences, Gyeongsang National University)
  • 진미은 (경상대학교 지질과학과 및 기초과학연구소) ;
  • 선광민 (한국원자력연구원 중성자응용연구부) ;
  • 박상구 (경상대학교 지질과학과 및 기초과학연구소) ;
  • 좌용주 (경상대학교 지질과학과 및 기초과학연구소)
  • Received : 2017.08.13
  • Accepted : 2017.10.17
  • Published : 2017.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, we selected three representative granite samples and conducted petrological observation to establish the Korean geostandards. Samples were taken from the two Jurassic (KJG-1, KJG-2) and one Cretaceous (KCG-1) granites in South Korea. The powder samples were prepared by the standard pulverization process, and glass beads were made for geochemical analysis using X-ray fluorescence (XRF) method, and finally, major element contents of the samples were acquired. The analytical data are shown with mean, standard deviation and relative standard deviation. The accuracy of the analysis was confirmed within an estimated error range of about 5% by comparing the recommended true values of the USGS and GSJ geostandards. Also, we checked the analytical precision by calculating a relative standard deviation of about 3% from the XRF analytical results for the three samples.

본 연구에서는 국내 암석을 대표할 수 있는 한국산 지질 표준물질을 제작하기 위해 대상이 되는 시료를 선정하고 암석학적 연구를 실시하였다. 지질 표준물질 대상 암석으로 쥐라기 화강암인 KJG-1와 KJG-2와 함께 백악기 화강암인 KCG-1을 선정하였다. 표준적인 분쇄 과정을 통하여 분말시료를 제조하고, X-선 형광을 위한 유리 비드를 제작하였으며, 최종적으로 시료들의 주성분 원소함량을 구하였다. 분석 자료에는 평균, 표준편차 및 상대 표준편차를 함께 제시하였다. 미국지질조사소(USGS)와 일본지질조사소(GSJ)의 지질표준물질을 함께 분석하여 그들의 참값과의 비교를 통해 5% 내의 정확도를 확인하였으며, 세 시료에 대한 XRF 분석결과 상대표준편차가 3% 내외의 높은 정밀도 역시 확인하였다.

Keywords

References

  1. Abbey, S., 1980, Studies in "standard samples" for use in the general analysis of silicate rocks and minerals. Geostandards Newsletter, Vol. 4, No. 2, 163-190. https://doi.org/10.1111/j.1751-908X.1980.tb00283.x
  2. Ando, A., Mita, N., and Terashima, S., 1987, 1986 Values for fifteen GSJ rock reference samples, "igneous rock series". Geostandards Newsletter, Vol. 11, No 2, 159-166. https://doi.org/10.1111/j.1751-908X.1987.tb00023.x
  3. Clemency, C.V. and Borden, D.M., 1978, The precision of "rapid" rock analysis and the homogeneity of new USGS standard rock samples. Geostandards Newsletter, Vol. 2, No. 2, 147-156. https://doi.org/10.1111/j.1751-908X.1978.tb00225.x
  4. Dixon, W.J. and Massey, F.J., 1957, Introduction to statistical analysis, 2nd edition. Mcgray-hill Book Company, New York, The United States of America, 488 p.
  5. Kane, J.S., Potts, P.J., Wiedenbeck, M., Carignan, J., and Wilson, S., 2003, International association of geoanalyst's protocol for the certification of geological and environmental reference materials. Geostandards Newsletter, Vol. 27, No. 3, 227-244. https://doi.org/10.1111/j.1751-908X.2003.tb00724.x
  6. Kim, K.H., 2006, Study on the preparation and characterization of standard reference materials of korean geological. Ph.D. dissertation, Kong Ju National University, Kong Ju-si, Korea, 323 p.
  7. Mandel, J., 1964, The statistical analysis of experimental data. Interscience Publishers, New York, The United States of America, 410 p.
  8. Jochum, K.P., Weis, U., Schwager, B., Stoll, B., Wilson, S.A., Haug, G.H., Andreae, M.O., and Enzweiler, J., 2015, Reference values following ISO guidellines for frequently requested rock reference materials. Geostandards and Geoanalytical Research, Vol. 40, No. 3, 333-350.
  9. Okai. T., 2016, Development and utilization of geochemical reference materials-reliability improvement in the analysis of geological materials. Synthesiology, vol. 9, No. 2, 60-73. https://doi.org/10.5571/synth.9.2_60
  10. Potts, P.J., Tindle, A.G., and Webb, P.C., 1992, Geochemical Rrference material compositions. Whittles Publishing, London, United Kingkom, 336 p.

Cited by

  1. Homogeneity Test on Bio-Matrix Reference Material for Chemical Analysis of Environmental Pollutants vol.27, pp.12, 2018, https://doi.org/10.5322/JESI.2018.27.12.1271