Elimination of the boron memory effect for rapid and accurate boron isotope analysis by MC-ICP-MS using NaF

doi:10.1039/c9ja00007k

	Elimination of the boron memory effect for rapid and accurate boron isotope analysis by MC-ICP-MS using NaF
	He, Mao-Yong 1,2,3,4; Deng, Li 2; Lu, Hai 5; Jin, Zhang-Dong 1,2
刊名	JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
	2019-05-01
卷号	34 期号:5 页码:1026-1032
ISSN号	0267-9477
DOI	10.1039/c9ja00007k
通讯作者	He, Mao-Yong(hemy@ieecas.cn) ; Jin, Zhang-Dong(zhdjin@ieecas.cn)
英文摘要	Boron isotopes are useful tracers for fluid-rock interactions and subduction processes, as well as a proxy for paleo-ocean pH. However, the strong B memory effect presents a great challenge in precisely measuring B isotope ratios and accurately using multi-collector inductively coupled plasma mass spectrometry. In this study, we present the first systematic study to examine the effectiveness of eliminating the B memory effect by using different rinse solutions. The results demonstrate that F-based rinse solutions (HF and NaF) are the most effective. However, using HF as a rinse solution will require a high content of HF (more than 0.3 M) or a low content of HF with the samples also in an HF medium, and requires special care because HF is highly toxic. By contrast, NaF (0.6 mg g(-1) NaF in 1% HNO3 solution) is equally effective regardless of the sample acid matrix. In addition, high concentration Na solution does not affect the stability of plasma, or result in unexpected mass bias during the analytical courses. It only takes less than 4 min to reduce the B signal to blank levels using NaF rinse solution. The long-term analysis of B reference materials over a year yields great reproducibility using acidified NaF as a rinse solution, with NIST SRM 951a, ERM-AE121, and GSB07-1979-2005 (in-house standard) with delta B-11 = 0.01 +/- 0.11, 20.29 +/- 0.48 and -13.32 +/- 0.40 parts per thousand (2SD, n = 27), respectively, which indicates that excellent precision can be achieved for boron isotope measurement. A series of natural samples with diverse matrices covering a large range of delta B-11 variations in the natural environment were measured using this protocol and yielded better results. Therefore, our protocol is applicable to a wide field of B isotope research that requires high precision and accuracy.
资助项目	National Natural Science Foundation of China[41573013] ; National Natural Science Foundation of China[U1407109] ; Natural Science Fund of Shaanxi Province[2015JM4143]
WOS关键词	IONIZATION MASS-SPECTROMETRY ; POSITIVE THERMAL IONIZATION ; OCEAN PH ; SCLERACTINIAN CORALS ; PLASMA ; PRECISION ; RATIOS ; DELTA-B-11 ; PROXY ; GEOCHEMISTRY
WOS研究方向	Chemistry ; Spectroscopy
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000485195500025
资助机构	National Natural Science Foundation of China ; Natural Science Fund of Shaanxi Province
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13466]
专题	地球环境研究所_加速器质谱中心第四纪科学与全球变化卓越创新中心
通讯作者	He, Mao-Yong; Jin, Zhang-Dong
作者单位	1.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 3.Univ Washington, Dept Earth & Space Sci, Isotope Lab, Seattle, WA 98195 USA 4.Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Shaanxi, Peoples R China 5.Natl Inst Metrol, Div Chem Metrol & Analyt Sci, Beijing 10013, Peoples R China
推荐引用方式 GB/T 7714	He, Mao-Yong,Deng, Li,Lu, Hai,et al. Elimination of the boron memory effect for rapid and accurate boron isotope analysis by MC-ICP-MS using NaF[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2019,34(5):1026-1032.
APA	He, Mao-Yong,Deng, Li,Lu, Hai,&Jin, Zhang-Dong.(2019).Elimination of the boron memory effect for rapid and accurate boron isotope analysis by MC-ICP-MS using NaF.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,34(5),1026-1032.
MLA	He, Mao-Yong,et al."Elimination of the boron memory effect for rapid and accurate boron isotope analysis by MC-ICP-MS using NaF".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 34.5(2019):1026-1032.