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DOI	10.1016/j.sab.2015.08.010
	Determination of Os by isotope dilution-inductively coupled plasma-mass spectrometry with the combination of laser ablation to introduce chemically separated geological samples
	Sun, Yali; Ren, Minghao; Xia, Xiaoping; Li, Congying; Sun, Weidong
通讯作者	Xia, XP (通讯作者)
发表日期	2015
ISSN	0584-8547
起始页码	22
结束页码	29
卷号	113
英文摘要	A method was developed for the determination of trace Os in geological samples by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) with the combination of chemical separation and preconcentration. Samples are digested using aqua regia in Carius tubes, and the Os analyte is converted into volatile OsO4, which is distilled and absorbed with HBr. The HBr solution is concentrated for further Os purification using the microdistillation technique. The purified Os is dissolved in 10 mu l of 0.02% sucrose-0.005% H3PO4 solution and then evaporated on pieces of perfluoroalkoxy (PFA) film, resulting in the formation of a tiny object (<3 x 10(4) mu m(2) superficial area). Using LA-ICP-MS measurements, the object can give Os signals at least 100 times higher than those provided by routine solution-ICP-MS while successfully avoiding the memory effect. The procedural blank and detection limit in the developed technique are 3.0 pg and 1.8 pg for Os, respectively when 1 g of samples is taken. Reference materials (RM) are analyzed, and their Os concentrations obtained by isotope dilution are comparable to reference or literature values. Based on the individual RM results, the precision is estimated within the range of 0.6 to 9.4% relative standard deviation (RSD), revealing that this method is applicable to the determination of trace Os in geological samples. (C) 2015 Elsevier B.V. All rights reserved.
关键词	PLATINUM-GROUP ELEMENT ICP-MS SIDEROPHILE ELEMENT RATIO MEASUREMENTS EARTHS MANTLE RE IR RU SYSTEMATICS DIGESTION
英文关键词	Osmium; Sensitivity; Memory effect; Chemical preconcentration; IA-ICP-MS
语种	英语
WOS研究方向	Spectroscopy
WOS类目	Spectroscopy
WOS记录号	WOS:000364898000003
来源期刊	SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258484
推荐引用方式 GB/T 7714	Sun, Yali,Ren, Minghao,Xia, Xiaoping,et al. Determination of Os by isotope dilution-inductively coupled plasma-mass spectrometry with the combination of laser ablation to introduce chemically separated geological samples[J]. 中国科学院青藏高原研究所,2015,113.
APA	Sun, Yali,Ren, Minghao,Xia, Xiaoping,Li, Congying,&Sun, Weidong.(2015).Determination of Os by isotope dilution-inductively coupled plasma-mass spectrometry with the combination of laser ablation to introduce chemically separated geological samples.SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY,113.
MLA	Sun, Yali,et al."Determination of Os by isotope dilution-inductively coupled plasma-mass spectrometry with the combination of laser ablation to introduce chemically separated geological samples".SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY 113(2015).