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DOI	10.1111/j.1751-908X.2012.00174.x
	Determination of Rare Earth Elements and Thorium at Nanogram Levels in Ultramafic Samples by Inductively Coupled Plasma-Mass Spectrometry Combined with Chemical Separation and Pre-concentration
	Sun, Yali; Sun, Shengling; Wang, Christina Yan; Xu, Peng
通讯作者	Sun, YL (通讯作者)
发表日期	2013
ISSN	1639-4488
EISSN	1751-908X
起始页码	65
结束页码	76
卷号	37 期号:1
英文摘要	A method was developed for the determination of low-level rare earth elements (REEs) and thorium in ultramafic samples by inductively coupled plasma-mass spectrometry. The conventional method for the digestion of ultramafic rocks using HNO3 and HF results in considerable amounts of insoluble fluorides because of the high contents of Mg (generally up to 24% m/m) in these rocks. In this study, we used H3BO3 as a complexing agent to break down the insoluble fluorides, and then separated the REEs from Fe and Mg major and Ba, Ca, Cr minor matrices by anion exchange and co-precipitation, respectively. The whole procedural blanks estimated from sample-free analyses ranged from 0.232 ng for Ce to 0.006 ng for Tm and Lu. Limits of detection for this method, defined as three times the standard deviation of these blank analyses, varied from 0.51 ng g(-1) for Ce to 0.03 ng g(-1) for Lu. The recovery of REEs using this technique, as determined using the standard addition method, ranged from 92.9% for Y to 102.0% for Er with 3% (RSD) variation. The method was validated using GAS (GeoPT-12), JP-1 and PCC-1, and the results were comparable to literature values, elucidating the applicability to the determination of ultra trace REEs in ultramafic rocks.
关键词	GEOLOGICAL REFERENCE MATERIALS ICP-MS TECHNIQUE TRACE-ELEMENTS EXTRACTION CHROMATOGRAPHY PRECISE DETERMINATION CATION-EXCHANGE ROCKS REE LANTHANIDES PCC-1
英文关键词	rare earth elements; thorium; ICP-MS; ultramafic rocks; chemical pre-concentration
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000319514600005
来源期刊	GEOSTANDARDS AND GEOANALYTICAL RESEARCH
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/258097
推荐引用方式 GB/T 7714	Sun, Yali,Sun, Shengling,Wang, Christina Yan,et al. Determination of Rare Earth Elements and Thorium at Nanogram Levels in Ultramafic Samples by Inductively Coupled Plasma-Mass Spectrometry Combined with Chemical Separation and Pre-concentration[J]. 中国科学院青藏高原研究所,2013,37(1).
APA	Sun, Yali,Sun, Shengling,Wang, Christina Yan,&Xu, Peng.(2013).Determination of Rare Earth Elements and Thorium at Nanogram Levels in Ultramafic Samples by Inductively Coupled Plasma-Mass Spectrometry Combined with Chemical Separation and Pre-concentration.GEOSTANDARDS AND GEOANALYTICAL RESEARCH,37(1).
MLA	Sun, Yali,et al."Determination of Rare Earth Elements and Thorium at Nanogram Levels in Ultramafic Samples by Inductively Coupled Plasma-Mass Spectrometry Combined with Chemical Separation and Pre-concentration".GEOSTANDARDS AND GEOANALYTICAL RESEARCH 37.1(2013).