Determination of Os-187 in molybdenite by ICP-MS with neutron-induced;Os-186 and Os-188 spikes

doi:10.1016/S0039-9140(01)00506-9

	Determination of Os-187 in molybdenite by ICP-MS with neutron-induced;Os-186 and Os-188 spikes
	Qu, W 4; Du, AD ; Zhao, DM
刊名	TALANTA
	2001
卷号	55 期号:4 页码:815-820
关键词	187Os molybdenite ICP mass spectrometry 186Os and 188Os spikes isotope dilution
ISSN号	0039-9140
DOI	10.1016/S0039-9140(01)00506-9
英文摘要	The article describes a method for the determination of Os-187 in molybdenite by isotope dilution inductively coupled plasma-mass spectrometry (ID-ICP-MS) with neutron-induced Os-186 and Os-188 spike. The spike used in the present work was prepared in line with the principle by which artificial nuclides are produced in a nuclear reaction. The concentration and isotopic composition of osmium in the prepared spike were evaluated accurately with the isotope dilution method, using negative thermal ion mass spectrometry (N-TIMS). The advantage of this method is that using Os-186 and Os-188 double spikes can effectively compensate for the mass discrimination effects of ICP-MS. Thus, the common correction practice for mass bias in the isotope dilution method with a single spike is unnecessary. In addition, the method enables one to reduce the determined error arising from instrumental instability. The precision for the Os-187/(Os-186+ Os-188) ratio was approximate to2% (2sigma, RSD), but in the case of Os-187/Os-186, Os-187/Os-188 and Os-186/Os-188, precision ranged from 2.0 to 8% (2sigma, RSD). The results for Os-187 concentration in a molybdenite sample determined with this method showed good agreement with reference values. (C) 2001 Elsevier Science B.V. All rights reserved.
学科主题	岩矿鉴定与测试
WOS关键词	IONIZATION MASS-SPECTROMETRY ; RATIO MEASUREMENTS ; OSMIUM ; RHENIUM ; METEORITES ; SYSTEM
WOS研究方向	Chemistry
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000173288900018
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/37448]
专题	中国地质科学院地质研究所
作者单位	1.Natl Res Ctr Geoanal, Beijing 100037, Peoples R China. 2.Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China. 3.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China. 4.中国地质科学院国家地质实验测试中心
推荐引用方式 GB/T 7714	Qu, W,Du, AD,Zhao, DM. Determination of Os-187 in molybdenite by ICP-MS with neutron-induced;Os-186 and Os-188 spikes[J]. TALANTA,2001,55(4):815-820.
APA	Qu, W,Du, AD,&Zhao, DM.(2001).Determination of Os-187 in molybdenite by ICP-MS with neutron-induced;Os-186 and Os-188 spikes.TALANTA,55(4),815-820.
MLA	Qu, W,et al."Determination of Os-187 in molybdenite by ICP-MS with neutron-induced;Os-186 and Os-188 spikes".TALANTA 55.4(2001):815-820.