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Elimination of the boron memory effect for rapid and accurate boron isotope analysis by MC-ICP-MS using NaF
He, Mao-Yong1,2,3,5; Deng, Li1; Lu, Hai4; Jin, Zhang-Dong1,2
通讯作者He, Mao-Yong(hemy@ieecas.cn) ; Jin, Zhang-Dong(zhdjin@ieecas.cn)
2019-05-01
发表期刊JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
ISSN0267-9477
卷号34期号:5页码:1026-1032
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.
DOI10.1039/c9ja00007k
关键词[WOS]IONIZATION MASS-SPECTROMETRY ; POSITIVE THERMAL IONIZATION ; OCEAN PH ; SCLERACTINIAN CORALS ; PLASMA ; PRECISION ; RATIOS ; DELTA-B-11 ; PROXY ; GEOCHEMISTRY
收录类别SCI ; SCI
语种英语
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研究方向Chemistry ; Spectroscopy
项目资助者National Natural Science Foundation of China ; Natural Science Fund of Shaanxi Province
WOS类目Chemistry, Analytical ; Spectroscopy
WOS记录号WOS:000485195500025
出版者ROYAL SOC CHEMISTRY
引用统计
被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/13467
专题加速器质谱中心
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.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China
3.Univ Washington, Dept Earth & Space Sci, Isotope Lab, Seattle, WA 98195 USA
4.Natl Inst Metrol, Div Chem Metrol & Analyt Sci, Beijing 10013, Peoples R China
5.Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Shaanxi, Peoples R China
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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.
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