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微量岩石样品中Rb-Sr和Pb一步分离及高精度热电离质谱测试: 采用30μL Sr特效树脂微柱,一步分离微量岩石样品中Rb-Sr和Pb,其回收率均优于90%,流程试剂用量仅0.75 mL,分离时间约3 h,Rb-Sr流程本底优于5 pg,Pb流程本底优于50 pg。本方法具有样品用量...; 李潮峰李献华郭敬辉李向辉李怀坤周红英李国占; 关键词：热电离质谱; 文献传递

Simultaneous Determination of 143Nd/144Nd and 147Sm/144Nd Ratios and Sm-Nd Contents from the Same Filament Loaded with Purified Sm-Nd Aliquot from Geological Samples by Isotope Dilution Thermal Ionization Mass Spectrometry: Isotope dilution thermal ionization mass spectrometry(ID-TIMS) is the standard technique used to achieve preci...; Chao-Feng LiXian-Hua LiQiu-Li LiJing-Hui GuoXiang-Hui LiLian-Jun FengZhu-Yin Chu; 文献传递

Rapid and precise determination of Sr and Nd isotopic ratios in geological samples from the same filament loading by thermal ionization mass spectrometry employing a single-step separation scheme: Thermal ionization mass spectrometry(TIMS) offers the excellent precision and accuracy of the Sr and Nd isotop...; Chao-Feng LiXian-Hua LiQiu-Li LiJing-Hui GuoXiang-Hui LiYue-Heng Yang; 文献传递

An evaluation of a single-step extraction chromatography separation method for Sm-Nd isotope analysis of micro-samples of silicate rocks by high-sensitivity thermal ionization mass spectrometry: <正>A single-step separation scheme is presented for Sm-Nd radiogenic isotope system on very small samples (1-3...; Chao-Feng Li~(a,b),Xian-Hua Li~(a,*),Qiu-Li Li~a,Jing-Hui Guo~a,Xiang-Hui Li~a,Tao Liu~(a,b) ~aState Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China ~bSchool of Earth Sciences,Graduate University of Chinese Academy of Sciences,Beijing 100039,China; 文献传递

微量岩石样品中Rb-Sr和Pb一步分离及高精度热电离质谱测试被引量：18: 2011年; 采用30μL Sr特效树脂微柱,一步分离微量岩石样品中Rb-Sr和Pb,其回收率均优于90%,流程试剂用量仅0.75 mL,分离时间约3 h,Rb-Sr流程本底优于5 pg,Pb流程本底优于50 pg。本方法具有样品用量少、本底低、回收率高、分离效率高等优点。结合高灵敏度TIMS分析技术,可以实现微量岩石样品高精度Rb-Sr和Pb同位素分析,对于珍贵样品如月岩、陨石和化石样品等具有重要应用价值。; 李潮峰李献华郭敬辉李向辉李怀坤周红英李国占; 关键词：热电离质谱

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国家自然科学基金(40903009)