In situ boron isotope measurements of natural geological materials by LA-MC-ICP-MS

ISL OpenIR > 青海盐湖研究所知识仓储

	In situ boron isotope measurements of natural geological materials by LA-MC-ICP-MS
	Hou KeJun 1; Li YanHe 1; Xiao YingKai 2; Liu Feng 1; Tian YouRong 3
	2010-10-01
发表期刊	CHINESE SCIENCE BULLETIN
卷号	55 期号:29 页码:3305-3311
关键词	Boron Isotope In Situ Analysis La-mc-icp-ms Matrix Effect Geochemistry
摘要	There are two main methods to determine boron isotopic composition. One is the solution method, in which boron is purified after the samples are dissolved in solution and the boron isotope ratios are determined by thermal ionization mass spectrometry (P-TIMS and N-TIMS) or multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS). The other is an in-situ analysis method, in which the in-situ boron isotopic ratios in minerals are analyzed directly using secondary ion mass spectrometry (SIMS) or laser ablation multicollector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS). In the in-situ analysis method for boron isotopes, the multifarious chemical purification and separation processes of the solution method are avoided, with increased work efficiency. In addition, the microzones and microbeddings of minerals can be analyzed in-situ to reveal the fine processes and conditions of mineral formation. In this study, using the standard-sample-bracketing (SSB) method, mass bias of the instrument and the fractionation of isotopes were calibrated, and the in-situ determination method of LA-MC-ICP-MS for boron isotopes was established. Through detailed analyses on a series of boron isotope standards and samples, a matrix effect was assessed but not detected, and the analysis results were in accordance with the formerly reported values or P-TIMS determined values, within the error range. The analytical results for IAEA B4 and IMR RB1 with relatively high boron contents were delta (11)B = -(8.36 +/- 0.58)aEuro degrees (2 sigma, n=50) and delta (11)B = -(12.96 +/- 0.97)aEuro degrees (2 sigma, n=57), respectively; the analytical result for IAEA B6 with relatively low boron content was delta (11)B = -(3.29 +/- 1.12)aEuro degrees (2 sigma, n=35). In-situ measurements for B isotopes were performed on geological samples such as tourmaline, ulexite, ludwigite, inyoite and ascharite, with the results consistent with those determined by P-TIMS, within the error range.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5951
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Chinese Acad Geol Sci, Inst Mineral Resources, MRL Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Salt Lakes, Xining 810008, Peoples R China 3.Thermo Fisher Sci Shanghai Co Ltd, Beijing 100007, Peoples R China
推荐引用方式 GB/T 7714	Hou KeJun,Li YanHe,Xiao YingKai,et al. In situ boron isotope measurements of natural geological materials by LA-MC-ICP-MS[J]. CHINESE SCIENCE BULLETIN,2010,55(29):3305-3311.
APA	Hou KeJun,Li YanHe,Xiao YingKai,Liu Feng,&Tian YouRong.(2010).In situ boron isotope measurements of natural geological materials by LA-MC-ICP-MS.CHINESE SCIENCE BULLETIN,55(29),3305-3311.
MLA	Hou KeJun,et al."In situ boron isotope measurements of natural geological materials by LA-MC-ICP-MS".CHINESE SCIENCE BULLETIN 55.29(2010):3305-3311.