Determination of the Mercury Isotopic Ratio by Cold Vapor Generation Sector Field-Inductively Coupled Plasma-Mass Spectrometry Using Lead as the Internal Standard
Tang, XX; Qian, Y; Li, YL; Fei, ZJ; Yao, J; Ma, JF; Liu, W
2018
发表期刊ANALYTICAL LETTERS
ISSN0003-2719
卷号51期号:12页码:1944-1955
文章类型期刊论文
摘要Lead was applied as an internal standard for the determination of Hg isotopic ratios. Cold vapor generation (CV) coupled with sector field-inductively coupled plasma-mass spectrometry (CV-SF-ICP-MS) was used for determination of Hg. It was effective to avoid interferences of Pb from samples while improving the sensitivity of Hg isotopic analysis by an approximate factor of 45 times higher than the aerosol mode. CV-SF-ICP-MS system was constructed and operational parameters were optimized. Research showed that the long stability of the system was limited by SF-ICP-MS and had no relationship with CV under the optimized conditions. The optimized precision of Hg isotopic ratio analysis was approximately 0.1% during 4 h. Five models were applied for the mass bias correction and the Baxter model obtained the smallest relative difference, 0.52 parts per thousand. The results showed that the mean value of NIST SRM 3133 Hg isotopic ratios obtained by Pb internal standard was nearly identical with the value for Tl. The same performance was also obtained in two environmental reference materials. The results show that Pb may be used as the internal standard for determination of Hg isotopic ratio instead of Tl.
关键词Atomic-absorption-spectrometry Bias Correction Icp-ms Hg Precision Fractionation Validation Health Model
DOI10.1080/00032719.2017.1394319
收录类别SCI
语种英语
WOS记录号WOS:000430986500010
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28966
专题中科院上海应用物理研究所2011-2018年
作者单位1.Tang, XX
2.Qian, Y
3.Li, YL
4.Fei, ZJ
5.Yao, J
6.Ma, JF
7.Liu, W
推荐引用方式
GB/T 7714
Tang, XX,Qian, Y,Li, YL,et al. Determination of the Mercury Isotopic Ratio by Cold Vapor Generation Sector Field-Inductively Coupled Plasma-Mass Spectrometry Using Lead as the Internal Standard[J]. ANALYTICAL LETTERS,2018,51(12):1944-1955.
APA Tang, XX.,Qian, Y.,Li, YL.,Fei, ZJ.,Yao, J.,...&Liu, W.(2018).Determination of the Mercury Isotopic Ratio by Cold Vapor Generation Sector Field-Inductively Coupled Plasma-Mass Spectrometry Using Lead as the Internal Standard.ANALYTICAL LETTERS,51(12),1944-1955.
MLA Tang, XX,et al."Determination of the Mercury Isotopic Ratio by Cold Vapor Generation Sector Field-Inductively Coupled Plasma-Mass Spectrometry Using Lead as the Internal Standard".ANALYTICAL LETTERS 51.12(2018):1944-1955.
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