IGGCAS OpenIR  > 矿产资源研究院重点实验室
High-precision potassium isotope analysis using the Nu Sapphire collision cell (CC)-MC-ICP-MS
Li, Wenjun1; Cui, Mengmeng1,2; Pan, Qiqi2,3; Wang, Jing1; Gao, Bingyu1; Liu, Shanke1; Yuan, Meng2,3; Su, Benxun1,2; Zhao, Ye4; Teng, Fang-Zhen5; Han, Guilin6
2022-06-20
Source PublicationSCIENCE CHINA-EARTH SCIENCES
ISSN1674-7313
Pages12
AbstractThis study presents high-precision analyses of stable potassium (K) isotope ratio using the recently-developed, collision-cell multi-collector inductively coupled plasma mass spectrometry (CC-MC-ICP-MS, Nu Sapphire). The accuracy of our analyses is confirmed by measuring well-characterized geostandards (including rocks and seawater). Our results are consistent with literature values and a precision of 0.04 parts per thousand (2SD) has been achieved based on multiple measurements of BCR-2 geostandard over a six-month period. We also evaluate factors that may lead to artificial isotope fractionations, including the mismatches in K concentration and acid molarity between samples and bracketing standards, as well as potential matrices. As the K adsorption capacity of AGW50-X8 (200-400 mesh) is reduced with an increasing amount of matrix elements, less than 150 mu g K was loaded during the column chemistry. To evaluate the potential use of K isotopes as an archive of paleo seawater composition, delta K-41 values of an international seawater standard (IAPSO), a Mn-nodule (NOD-P-1), and two iron formation standards (FeR-2 and FeR-4) are reported. The delta K-41 value of IAPSO is consistent with other seawater samples reported previously, further substantiating a homogeneous K isotopic distribution in modern global oceans. The K isotopes in Mn-nodule (NOD-P-1: -0.121 +/- 0.013 parts per thousand) and iron formation samples (FeR-2: -0.538 +/- 0.009 parts per thousand; FeR-4: -0.401 +/- 0.008 parts per thousand) seem to be an effective tracer of their formation genesis and compositional changes of ancient seawater. Our results suggest that high-precision measurements of stable K isotopes can be routinely obtained and open up a large variety of geological applications, such as continental weathering, hydrothermal circulation and alteration of oceanic crust.
KeywordCC-MC-ICP-MS Potassium isotopes Geostandards Sample-standard bracketing method Low energy path
DOI10.1007/s11430-022-9948-6
Funding OrganizationExperimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS KeywordMC-ICP-MS ; MANTLE ; FRACTIONATION
Language英语
Funding ProjectExperimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences[TEC 202103] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
Funding OrganizationExperimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000815406700001
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105892
Collection矿产资源研究院重点实验室
岩石圈演化国家重点实验室
Corresponding AuthorLi, Wenjun; Su, Benxun
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Nu Instruments, Wrexham LL13 9X8, Wales
5.Univ Washington, Dept Earth & Space Sci, Isotope Lab, Seattle, WA 98195 USA
6.China Univ Geosci Beijing, Inst Earth Sci, Beijing 100083, Peoples R China
First Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Wenjun,Cui, Mengmeng,Pan, Qiqi,et al. High-precision potassium isotope analysis using the Nu Sapphire collision cell (CC)-MC-ICP-MS[J]. SCIENCE CHINA-EARTH SCIENCES,2022:12.
APA Li, Wenjun.,Cui, Mengmeng.,Pan, Qiqi.,Wang, Jing.,Gao, Bingyu.,...&Han, Guilin.(2022).High-precision potassium isotope analysis using the Nu Sapphire collision cell (CC)-MC-ICP-MS.SCIENCE CHINA-EARTH SCIENCES,12.
MLA Li, Wenjun,et al."High-precision potassium isotope analysis using the Nu Sapphire collision cell (CC)-MC-ICP-MS".SCIENCE CHINA-EARTH SCIENCES (2022):12.
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