基于TIMS的技术特点，理论上，如果将极微量的Rb(～1 ng)和常量的Sr(～1 μg)进行混合，低温测试Rb时，Sr无法被电离，因此不会有87Sr对87Rb的干扰，高温测试Sr时，微量87Rb对87Sr干扰可通过灯丝预热而得到完全消除。中科院地质与地球物理研究所李潮峰正高级工程师及其合作者，系统优化了传统ID-TIMS技术，在不牺...
3. ID-TIMS：是IDMS的一种形式，它使用热电离质谱仪进行分析。适用于需要高精度测量的场合，例如在环境...
ID-TIMS bridges the gap between conventional bulk-grain high-precision dating and high-spatial resolution in situ techniques, enabling the study of the timescales of a variety of processes recorded on the scale of individual growth zones in zircon. This method can be applied to z...
5) isotope dilution (ID) 同位素稀释(ID)6) Thermal-ionization massspectrometry(TIMS) 热电离质谱(TIMS)补充资料:积分稀释热分子式:CAS号:性质:在等温等压的情况下,加1摩尔的纯溶剂于有限量和一定浓度的溶液中,所发生的热效应称为该条件下的积分稀释热,或简称稀释热。又称积分溶解热。例如: H...
Isotope dilution thermal ionization mass spectrometry (ID-TIMS) for determination of concentration of enriched lithium using NaLiBO2+ ionsIDMSConcentrationNaLiBO2+Na2BO2+Li-6 and(7)Li enriched Li2CO3Calibration of6Li enriched spike by Reverse IDMS was carried out by monitoring molecular ion species ...
锆石U-Pb 定年2:zircon geochronology by ID-TIMS chemical abrasion & dissolution 45 -- 8:46 App 锆石U-Pb定年3:U-Pb zircon geochronology by ID-TIMS column chemistry separation 3594 1 0:54 App 建造鸽子塔不用刻意喂养,还能收集鸽子蛋 1.9万 5 20:57 App 天空中“最惊人”的10大发现,外国网友...
摘要: 铀矿作为国防建设和核能发展的重要战略资源,对其进行勘察与找矿具有重要意义.而铀矿成矿年代学是深入探讨和研究铀矿床的成矿物质来源,成矿机制及成矿动力学背景等问题的基础.本文提出微克量沥青铀矿ID-TIMS方法,为铀矿床的成矿理论研究和铀矿地质勘探提供更精确可靠的年代学信息.关键词:...
建立了超低本底单颗粒锆石高精度CA-ID-TIMS U-Pb分析方法. 与国内早期实验室报道的全流程Pb本底(30~50 pg)相比, 目前本工作全流程Pb本底水平已降低1个数量级以上(2~3 pg), 可以更好地满足单颗粒锆石高精度ID-TIMS U-Pb定年要求. 同时, 详细研究了Pb流程本底的来源, 并且对全流程Pb本底获得较高精度的Pb...
U–Pb geochronology using isotope dilution-thermal ionization mass spectrometry (ID-TIMS) is by far the most precise analytical technique. It affords the opportunity to determine 206Pb/238U dates with unprecedented precision often <1‰ on single analyses or weighted mean dates derived from multiple ...
New U-Pb ID-TIMS age constraints on the prolonged evolution of a m茅lange in southwestern Norway: Indications for magmatic activity outboard the Caledonian margin of Baltica in the Early Ordovician (Provisional title)Jakob, JohannesAlsaif, Manar...