Proceedings of the Annual Joint Conference, the Mineralogical Society of Korea and the Petrological Society of Korea,
May 23-24, 2013, Daejeon, Korea
(사)한국광물학회․한국암석학회
2013년 공동학술발표회 논문집 - 96 -
Sm+Nd 혼합 표준용액의 Nd 동위원소와 Sm/Nd 비 분석법
Sm-Nd isotopic analysis of mixed standard solutions by multiple collector-inductively coupled plasma-mass spectrometry: evaluations
on isobaric interference correction of Nd isotopic composition and external calibration of Sm/Nd ratio
류종식(Jong-Sik Ryu)* ․ 최민석(Min Seok Choi) ․ 정연중(Youn-Joong Jeong) 정창식(Chang-sik Cheong)
한국기초과학지원연구원 환경과학연구부
The Sm-Nd isotope system has long been used to provide information on the age and geochemical evolution of terrestrial rocks and extraterrestrial objects. Traditional thermal ionization mass spectrometry requires a refined chemical separation of Sm and Nd. Here, we present multiple collector-inductively coupled plasma-mass spectrometry (MC-ICP-MS) Sm-Nd isotopic results for a series of mixed standard solutions with different Sm/Nd ratios to test the validity of isobaric interference corrections of Nd isotopic composition and external calibration of Sm/Nd inter-elemental ratio.
Reliable 143Nd/144Nd and 145Nd/144Nd ratios of the mixed solutions were obtained by using the exponential law and selected Sm isotopic compositions.
The Sm/Nd ratios of the mixed solutions corrected by the standard bracketing method were consistent with the gravimetric values mostly within 1%
difference. This study provides a simple and high-throughput technique that can simultaneously measure Nd isotopic composition and Sm/Nd ratio without chemical separation between Sm and Nd.
참고문헌
Ryu, J.-S., Choi, M.S., Jeong, Y.-J., Cheong, C.-S., 2013. Sm-Nd isotopic analysis of mixed standard solutions by multi-collector inductively coupled plasma-mass spectrometry: evaluations on isobaric interference correction of Nd isotopic composition and external calibration of Sm/Nd ratio. Journal of Analytical Science and Technology (in press).
