High-Precision Nd-143/Nd-144 Ratios from NdO+ Data Corrected with in-Run Measured Oxygen Isotope Ratios

doi:10.1021/ac502197u

	High-Precision Nd-143/Nd-144 Ratios from NdO+ Data Corrected with in-Run Measured Oxygen Isotope Ratios
	Chu, Zhu-Yin 1; Li, Chao-Feng 1; Hegner, Ernst 2,3; Chen, Zhi 1,4; Yan, Yan 1,4; Guo, Jing-Hui 1
刊名	ANALYTICAL CHEMISTRY
	2014-11-18
卷号	86 期号:22 页码:11141-11150
ISSN号	0003-2700
DOI	10.1021/ac502197u
文献子类	Article
英文摘要	The NdO+ technique has been considerably refined in recent years for high precision measurement of Nd isotope ratios in low-level samples (1-5 ng Nd). As oxygen isotopic compositions may vary significantly with experimental conditions such as filament material, ionization enhancer and the ambient oxygen in the ion source, great "care" should be taken for using correct oxygen isotopic compositions to do the isobaric oxide corrections for the "conventional" NdO+ method. Our method presented here for NdO+ data reduction and PIO+ interference corrections uses the oxygen isotope composition determined in each cycle of the NdO+ measurements. For that purpose, we measured the small ion signals of (NdO+)-Nd-18-O-17 and (NdO+)-Nd-150-O-18 with amplifiers equipped with 10(12) Omega feedback resistors, and those of (NdO+)-O-16 ion beams with 10(11) Omega amplifiers. Using 10(12) Omega amplifiers facilitates a precise measurement of the very small (NdO+)-Nd-150-O-17 and 'Neat ion signals and calculation of highly accurate and precise Nd-143/Nd-144 isotope ratios. The Nd-143/Nd-144 ratios for JNdi-1 standards and several whole rock reference materials determined with the method on 4 ng of Nd loads are consistent with previously reported values within analytical error, with internal and external precision (2 RSE and 2 RSD) of better than 20 and 30 pprn, respectively.
WOS关键词	IONIZATION MASS-SPECTROMETRY ; RARE-EARTH-ELEMENTS ; MARTIAN METEORITES ; SILICATE ROCKS ; ICP-MS ; RB-SR ; SM ; TIMS ; SYSTEMATICS ; SEPARATION
WOS研究方向	Chemistry
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000345263300024
资助机构	Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; 41373020) ; 41373020) ; 41373020) ; 41373020) ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; 41373020) ; 41373020) ; 41373020) ; 41373020) ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; 41373020) ; 41373020) ; 41373020) ; 41373020) ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; Natural Science Foundation of China (NSFC)(41273018 ; 41373020) ; 41373020) ; 41373020) ; 41373020)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85208]
专题	中国科学院地质与地球物理研究所
通讯作者	Chu, Zhu-Yin
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Ludwig Maximilians Univ Munchen, Dept Earth & Environm Sci, D-80333 Munich, Germany 3.Ludwig Maximilians Univ Munchen, GeoBioCtr, D-80333 Munich, Germany 4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chu, Zhu-Yin,Li, Chao-Feng,Hegner, Ernst,et al. High-Precision Nd-143/Nd-144 Ratios from NdO+ Data Corrected with in-Run Measured Oxygen Isotope Ratios[J]. ANALYTICAL CHEMISTRY,2014,86(22):11141-11150.
APA	Chu, Zhu-Yin,Li, Chao-Feng,Hegner, Ernst,Chen, Zhi,Yan, Yan,&Guo, Jing-Hui.(2014).High-Precision Nd-143/Nd-144 Ratios from NdO+ Data Corrected with in-Run Measured Oxygen Isotope Ratios.ANALYTICAL CHEMISTRY,86(22),11141-11150.
MLA	Chu, Zhu-Yin,et al."High-Precision Nd-143/Nd-144 Ratios from NdO+ Data Corrected with in-Run Measured Oxygen Isotope Ratios".ANALYTICAL CHEMISTRY 86.22(2014):11141-11150.