采用负离子热电离质谱（ＮＴＩＭＳ）和等离子体质谱（ＩＣＰ－ＭＳ）技术建立了１８７Ｏｓ１８６Ｏｓ和１８７Ｏｓ１８８Ｏｓ测年方法。方法基于利用核反应１８５Ｒｅ（ｎ，γ）１８６Ｒｅ和１８７Ｒｅ（ｎ，γ）１８８Ｒｅ所产生的１８６Ｒｅ和１８８Ｒｅ分别经过β衰变生成稳定同位素１８６Ｏｓ和１８８Ｏｓ。１８６Ｏｓ和１８８Ｏｓ的生成量由照射参数和样品中Ｒｅ含量决定。只要测定Ｏｓ同位素比值就可计算出Ｒｅ含量和ＯｓＯｓ年龄。以年龄参考样ＨＬＰ为标准，ＮＴＩＭＳ测定了陕西金堆城斑岩钼矿中辉钼矿（ＪＤＣ）的ＯｓＯｓ年龄。ｔ１８６＝１３９．１Ｍａ±０．７Ｍａ（２σ）与本实验室ＩＣＰ－ＭＳ方法ＲｅＯｓ年龄测定值１３９Ｍａ±６Ｍａ（２σ）以及美国地调局ＮＴＩＭＳ方法ＲｅＯｓ年龄测定值１４０．１Ｍａ±１．０Ｍａ（２σ）基本吻合 187Os186Os and187Os188Os dating methods were established by negative ion thermal ionization mass spectrometry (NTIMS) and mass spectrometry (ICP-MS). Methods Based on the 186Re and 188Re produced by the nuclear reactions 185Re (n, γ) 186Re and 187Re (n, γ) 188Re, the stable isotopes 186Os and 188Os were generated via β-decay, respectively. The generation of 186Os and 188Os is determined by the irradiation parameters and the Re content in the sample. As long as the determination of the ratio of Os isotopes can be calculated Re content and Os  Os age. Using age reference HLP as a standard, NTIMS was used to determine OsOs ages of molybdenite (JDC) in the Jinduicheng porphyry molybdenum deposit, Shaanxi Province. t186 = 139.1Ma ± 0.7Ma (2σ) and the Re-Os age of the laboratory ICP-MS method 139Ma ± 6Ma (2σ) and the United States Bureau of NTIMS method Re-Os age 140.1Ma ± 1 .0Ma (2σ) basically consistent