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FS-ICPMS和TIMS联用法测定微粒铀矿物的年龄OACSCD

Age Dating of Uranium Mineral Particles by FS-ICPMS and TIMS

中文摘要英文摘要

A method for age dating of uranium mineral particles by double focusing magnetic sector inductively coupled mass spectrometry (FS-ICPMS) and thermal ionization mass spectrometry (TIMS) was presented. Pb/U ratio in uranium mineral particles was measured by FS-ICPMS without any chemical separation procedure. Pb isotope composition in uranium mineral particles was determined by TIMS associated with micro column anion exchange resin method. Due to simplified chemical procedure and minimum use of reagents, the full procedure blank was reduced to 230 pg Pb, leading to the successful age dating of uranium mineral particles with relative standard deviation less than 2%.

A method for age dating of uranium mineral particles by double focusing magnetic sector inductively coupled mass spectrometry (FS-ICPMS) and thermal ionization mass spectrometry (TIMS) was presented. Pb/U ratio in uranium mineral particles was measured by FS-ICPMS without any chemical separation procedure. Pb isotope composition in uranium mineral particles was determined by TIMS associated with micro column anion exchange resin method. Due to simplified chemical procedure and minimum use of reagents, the full procedure blank was reduced to 230 pg Pb, leading to the successful age dating of uranium mineral particles with relative standard deviation less than 2%.

郭冬发;崔建勇;谭靖;侯艳先;武朝晖;刘宇昂;张彦辉

核工业北京地质研究院,北京,100029

化学化工

U-Pb age dating;uranium mineral particle;FS-ICPMS;TIMS

U-Pb age dating;uranium mineral particle;FS-ICPMS;TIMS

《质谱学报》 2005 (0z1)

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