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Mg同位素标准参考物质SRM980的同位素不均一性研究 预览 被引量:5

Heterogeneity of Mg Isotope Composition in SRM980
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摘要 SRM980是由美国标准物质与技术研究所研制的Mg同位素标准参考物质。运用MC-ICPMS Mg高精度测试方法.对该参考物质中的Mg同位素成分是否均一性进行了研究。在所测定的5片SRM980镁金属碎片的同位素成分存在明显的不均一性,其最大差异为:δ^25Mg为1.08,δ^26Mg为2.12,是该实验室Mg同位素测定外部精度的一个数量级以上。 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.
作者 朱祥坤 何学贤 杨淳 ZHU Xiangkun, HE Xuexian, YANG Chun (Laboratory of Isotope Geology, MLG, Institute of Geology, CAGS, Beijing, 100037)
出处 《地球学报》 EI CAS CSCD 北大核心 2005年第B09期 12-14,共3页 Acta Geoscientica Sinica
基金 本文由国家自然科学基金重点项目(编号:40331005)资助.
关键词 MC-ICPMS MG同位素 标准物质 SRM980 不均一性 标准参考物质 同位素成分 Mg 同位素测定 测试方法 MC-ICPMS Mg isotopes standard reference materials SRM980 isotope Heterogeneity
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参考文献5

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二级参考文献6

  • 1朱祥坤,何学贤,杨淳.Mg同位素标准参考物质SRM980的同位素不均一性研究[J].地球学报,2005,26(B09):12-14. 被引量:5
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