山东国土资源2024，Vol.40Issue(6)：28-35,8.DOI:10.12128/j.issn.1672-6979.2024.06.004
热电离质谱法测定岩石标准物质中Sr同位素组成
Determination of Sr Isotopic Composition of Rock Standards by Thermal Ionisation Mass Spectrometry
摘要
Abstract
The strontium isotope ratios for a carbonated strontium isotope standard SRM 987 and four rock samples BCR-2,BHVO-2,JLs-1,and GBW07127 have been determined by using the Triton XT thermal ionisation mass spectrome-ter provided by the Shandong Institute of Geological Sciences.To correct for mass fractionation,an exponential law with 88Sr/86Sr=8.375209 has been employed,while 87Rb/85Rb=0.385041 has been used to correct for isobaric interference.The obtained 87Sr/86Sr ratios for SRM 987,BCR-2,BHVO-2,and JLs-1 are 0.710252±0.000011(n=40,2SD),0.705016±0.000011(n=10,2SD),0.703471±0.000011(n=10,2SD),and 0.707825±0.000014(n=10,2SD),respec-tively.the results are consistent with the recommended values and the previously published literature.inthis study,we re-port the 87Sr/86Sr ratio of carbonatite standard GBW07127,which results in 0.708971+0.000023(n=20,2SD).This data enriches the current strontium isotope library of the national standard material,and it can provideimportant data references for the analytical study of geochemistry.关键词
热电离质谱仪/锶同位素/岩石标准物质/质谱分析Key words
Thermal ionization mass spectrometry/strontium isotopes/rock reference samples/mass spectrometric analysis分类
化学化工引用本文复制引用
徐珺,王秀凤,周长祥,程伟,迟乃杰,张晨西,李增胜,舒磊,单伟,李敏,孙雨沁..热电离质谱法测定岩石标准物质中Sr同位素组成[J].山东国土资源,2024,40(6):28-35,8.基金项目
国家自然科学基金(42272104) （42272104）
中国地质调查局中国矿产地质志项目(DD20221695) （DD20221695）
山东省地质勘查项目(鲁勘字[2022]12号) （鲁勘字[2022]12号）
山东省自然科学基金(ZR2019PD019) （ZR2019PD019）
山东省自然科学基金青年项目(编号ZR2022QD050) （编号ZR2022QD050）
山东省地质科学研究院开放课题资助项目(Kfjjdky202120) （Kfjjdky202120）
