압력용기 산분해법과 테플론 바이알에서의 산분해법이 미량원소의 함량측정에 미치는 영향

국문 초록 (Abstract)

화성암의 성인을 밝혀내는데 있어서 중요한 기초자료로서 지구화학적으로 중요한 의미를 가지는 미량원소의 함량은 대개는 암석가루의 산분해법에 의해 준비된 용액과 유도결합 플라즈마 질량분석기(ICP-MS)를 이용하여 측정한다. 이 때 암석가루의 산분해에는 일반적으로 테플론 바이알 혹은 압력용기를 이용한다. 이 논문에서는 미국지질조사소의 암석 표준시료인 BCR2, GSP2를 이용한 압력용기 혹은 테플론 바이알 산분해법 실험과정에서 발생될 수 있는 특정 미량원소의 손실 가능성에 대해 조사하였다. 실험결과, BCR2에서는 Cr, Ni, Zn, Ta, W의 변화가 제일 심했고, GSP2에서는 Rb, Sr, Zr, Hf, Ta, W 등에서 추천값(참고값)과 큰 차이를 보여주었다. 산분해 실험에 의한 화성암류내 W의 함량측정은 많은 주의가 필요하며, 이외에도 현무암류에서는 Cr과 Ni의 측정값에, 화강암류에서는 Zr, Hf, Ta의 측정값에 주의가 필요하다는 것을 확인할 수가 있었다.

다국어 초록 (Multilingual Abstract)

Trace element abundances in the igneous rocks are important data for petrogenetic interpretation. Their concentrations are generally measured using ICP-MS from the dissolved solution. The acid digestion of rock powder can be performed by conventional teflon vial or pressure bomb. In this paper, we investigated a problem that happened during acid digestion experiment using conventional teflon vial or pressure bomb of BCR2 and GSP2 USGS rock standard materials. The results show that the measured concentrations of the elements like Cr, Ni, Zn, Ta, W in the BCR2 are different from the recommended values of USGS whereas those of the elements like Rb, Sr, Zr, Hf, Ta, W in the GSP2 are different from those values. Our experiment shows that defect of specific elements like Cr, Ni may happen during the sample digestion. Our results also indicate that the Cr, Ni, W, Zr, Hf, Ta concentration obtained based on an acid digestion of geological samples need to be careful in their geochemical interpretation.

목차 (Table of Contents)

• 요약
• Abstract
• 서언
• 시료의 분해방법 및 분석방법
• 결과 및 토의
• 요약 및 결론
• References

참고문헌 (Reference)

• 1 박찬수, "저희석 유리구 용해법에 의한 암석시료 미량원소 분석법" 한국암석학회 20 (20): 161-172, 2011
• 2 Pearce, J. A., "Trace element discrimination diagrams for the tectonic interpreatation of granitic rocks" 25 : 956-983, 1984
• 3 Barrat, J. A., "The Stannern trend eucrites: Contamonation of main group eucritic magma by crustal partial melts" 71 : 4108-4124, 2007
• 4 Madinabeitia, S. G., "Simultaneous determination of major to ultratrace elements in geological samples by fusion-dissolution and inductively coupled plasma mass spectrometry techniques. Analytica Chinica Acta" 625 : 117-130, 2008
• 5 Vendemiatto, M.A., "Routine Control of Accuracy in Silicate Rock Analysis by X-ray Fluorescence Spectrometry" 25 : 283-291, 2001
• 6 Jochum, K.P., "Reference Materials in Geochemical and Environmental Research" 15 : 43-70, 2014
• 7 Huang, F., "Recycling of deeply subducted continental crust in the Dabie Mountains, central China" 2007 : 151-169, 2007
• 8 Zhang, W., "Reassessment of HF/HNO3, decomposition Capability in the high-pressure digestion of felsic rocks for multi-element determination by ICP-MS" 36 : 271-289, 2012
• 9 Orihashi, Y., "Rapid quantitative analysis of Y and REE abyndances in XRF glass bead for selected GSJ reference rock standards using Nd-YAG 266nm UV laser ablation ICP-MS" 37 : 401-412, 2003
• 10 Kim, T., "Quantitative analysis of REEs in geological samples using ICP-MS: effect of oxide and hydroxide interference on REEs" 29-30, 2014
• 11 Sun, S-S., "Magmatism in the Ocean Basins" Geological Society of London 313-345, 1989
• 12 Budahn, J.R., "Instrumental neutron activation by abbreviated count" Y1-Y9, 2002
• 13 Longerich, H. P., "Inductively coupled plasma-mass spectrometric analysis of geochemical samples: a critical evaluation based on case studies" 83 : 105-118, 1990
• 14 Gill, R., "Igneous rocks and processes: A practical guide" Wiley-Blackwell 428-, 2010
• 15 이승구, "ICP-MS를 이용한 화강암내 희토류원소 분석시 저어콘이 미치는 영향" 한국암석학회 23 (23): 337-349, 2014
• 16 Jenner, G. A., "ICP-MS - A powerful tool for high-precision traceelement analysis in Earth science: evidence from analysis of selected U.S.G.S. reference samples" 83 : 133-148, 1990
• 17 Raczek, I., "High-Precision Trace Element Data for the USGS Reference Materials BCR-1, BCR-2, BHVO-1, BHVO-2, AGV-1, AGV-2, DTS-1, DTS-2, GSP-1 and GSP-2 by ID-TIMS and MIC-SSMS" 25 : 77-86, 2001
• 18 Masuda, A., "Fine structure of mutually normalized rare earth patterns of chondrites" 37 : 239-248, 1973
• 19 Weyer, S., "Determination of ultra-low Nb, Ta, Zr and Hf concentrations and the chondritic Zr/Hf and Nb/Ta ratios by isotope dilution analyses with multiple collector ICP-MS" 187 : 295-313, 2002
• 20 Liang, Q., "Determination of trace elements in granites by inductively coupled plasma mass spectrometry" 51 : 507-513, 2000
• 21 Park, C-S., "Determination of Trace Elements in Geological Reference Materials G-3, GSP-2 and SGD-1a by Low-Dilution Glass Bead Digestion and ICP-MS" 37 : 361-368, 2013
• 22 Pretorious, W., "Complete trace elemental Characterisation of granitoid (USGS G-2, GSP-2) reference materials by high resolution inductively plasma-mass spectrometry" 30 : 39-54, 2006
• 23 Cotta, A.J.B., "Classical and New Procedures of Whole Rock Dissolution for Trace Element Determination by ICP-MS" 36 : 27-50, 2012
• 24 Totland, M., "An assessment of dissolution techniques for the analysis of geological samples by plasma spectrometry" 95 : 35-62, 1992
• 25 Masuda, A., "Abundances of mono isotopic REE, consistent with the Leedey chondritic values" 9 : 183-184, 1975
• 26 Pourmand, A., "A novel extraction chromatography and MC-ICP-MS technique for rapid analysis of REE, Sc, and Y: Revising CIchondrite and Post-Archean Australian Shale (PAAS)abundances" 291 : 38-54, 2012