质谱学报
質譜學報
질보학보
2005年
z1期
85-86
,共2页
郭冬发%崔建勇%谭靖%侯艳先%武朝晖%刘宇昂%张彦辉
郭鼕髮%崔建勇%譚靖%侯豔先%武朝暉%劉宇昂%張彥輝
곽동발%최건용%담정%후염선%무조휘%류우앙%장언휘
U-Pb age dating%uranium mineral particle%FS-ICPMS%TIMS
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%.
