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  4. 岩石圈演化国家重点实验室
Non-Matrix-Matched Determination of Th-Pb Ages in Zircon, Monazite and Xenotime by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry

文献类型：期刊论文

作者Luo, Tao1; Zhao, He1; Li, Qiuli2; Li, Yang2; Zhang, Wen1; Guo, Jingliang1; Liu, Yongsheng1; Zhang, Junfeng1; Hu, Zhaochu1
刊名GEOSTANDARDS AND GEOANALYTICAL RESEARCH
出版日期2020-09-16
页码16
关键词LA-ICP-MS Th-Pb dating non-matrix-matched analysis zircon monazite xenotime
ISSN号1639-4488
DOI10.1111/ggr.12356
英文摘要Similar to the U-Pb system, the(232)Th-Pb-208 decay scheme is also widely utilised in geochronology of Th-rich accessory minerals. The matrix-dependent systemic deviations observed between different accessory minerals and the paucity of well-characterised reference materials for some minerals of interest (e.g., xenotime and allanite) are the major obstacles to yield accurate and precise Th-Pb ages with laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). In this study, we investigated the effects of the addition of nitrogen, oxygen and water vapour before the ablation cell on the accuracy of Th-Pb dating of accessory minerals (i.e., zircon, monazite and xenotime) using NIST SRM 610 glass as the calibrating reference material. Our results demonstrate that the measured(208)Pb/Th-232 ages in zircon, monazite and xenotime were approximately 9-24% lower than their isotope dilution thermal ionisation mass spectrometry (ID-TIMS) ages in normal ablation (without addition of additional gases). The measured(208)Pb/Th-232 ages of zircon (Plesovice, M257 and Qinghu), monazite (44069 and Trebilcock) and xenotime (BS-1 and MG-1) showed excellent agreement with their respective reference values with the addition of small amounts of water vapour before the ablation cell. This may be due to the dramatically reduced biases for the down-hole fractionation of Pb/Th intensity ratios in NIST SRM 610 and accessory minerals in the presence of water vapour. The Th-Pb ages of zircon, monazite and xenotime were successfully analysed using NIST SRM 610 glass as the calibrating reference material with both 193 nm ArF excimer laser ablation-quadrupole-inductively coupled plasma-mass spectrometry (LA-Q-ICP-MS) and 213 nm Nd:YAG laser ablation-sector field-inductively coupled plasma-mass spectrometry (LA-SF-ICP-MS) in combination with the developed water vapour-assisted method. This method is an effective and notably simple approach for non-matrix-matched analysis of Th-Pb ages in zircon, monazite and xenotime by LA-ICP-MS.
WOS关键词NATURAL REFERENCE MATERIAL ; U-PB ; ICP-MS ; CARRIER GAS ; GEOCHRONOLOGY ; ALLANITE ; ISOTOPE ; HF ; SYSTEMATICS ; QUADRUPOLE
资助项目National Key R&D Program of China[2016YFE0203000] ; National Natural Science Foundation of China[41903015] ; National Natural Science Foundation of China[41873029] ; National Science Fund for Distinguished Young Scholars[41725013] ; Chinese Ministry of Education[BP0719022] ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; China National Space Administration[D020205]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000570074900001
出版者WILEY
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; Chinese Ministry of Education ; Chinese Ministry of Education ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; China National Space Administration ; China National Space Administration ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; Chinese Ministry of Education ; Chinese Ministry of Education ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; China National Space Administration ; China National Space Administration ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; Chinese Ministry of Education ; Chinese Ministry of Education ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; China National Space Administration ; China National Space Administration ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; Chinese Ministry of Education ; Chinese Ministry of Education ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; MOST Special Fund from the State Key Laboratories of Geological Processes and Mineral Resources ; China National Space Administration ; China National Space Administration
源URL[http://ir.iggcas.ac.cn/handle/132A11/98240]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Hu, Zhaochu
作者单位1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Luo, Tao,Zhao, He,Li, Qiuli,et al. Non-Matrix-Matched Determination of Th-Pb Ages in Zircon, Monazite and Xenotime by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry[J]. GEOSTANDARDS AND GEOANALYTICAL RESEARCH,2020:16.
APA Luo, Tao.,Zhao, He.,Li, Qiuli.,Li, Yang.,Zhang, Wen.,...&Hu, Zhaochu.(2020).Non-Matrix-Matched Determination of Th-Pb Ages in Zircon, Monazite and Xenotime by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry.GEOSTANDARDS AND GEOANALYTICAL RESEARCH,16.
MLA Luo, Tao,et al."Non-Matrix-Matched Determination of Th-Pb Ages in Zircon, Monazite and Xenotime by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry".GEOSTANDARDS AND GEOANALYTICAL RESEARCH (2020):16.

入库方式： OAI收割

来源：地质与地球物理研究所

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