| Mg同位素标准参考物质SRM980的同位素不均一性研究 |
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| 关键词:MC-ICPMS Mg isotopes standard reference materials SRM980 isotope Heterogeneity |
| 基金项目:本文为国家自然科学基金重点项目（编号40331005）资助 |
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| Heterogeneity of Mg Isotope Composition in SRM980 |
| The Mg isotope composition of standard reference material SRM980 prepared by NIST has been investigated in some detail. It has been found that the Mg isotope composition in the material is largely heterogeneous. Among the 5 Mg metal chips analysed, variation in Mg isotope composition is up to 0.00032164 in 25Mg/24Mg，and 0. 00070216 in 26Mg/24Mg ratios. Thus this material is improper to be used as a standard reference for high-precision Mg isotope ratio measurement. |
| ZHU Xiangkun,HE Xuexian,YANG Chun.2005.Heterogeneity of Mg Isotope Composition in SRM980[J].Acta Geoscientica Sinica,26(z1):12-14. |
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