钾同位素的高效分离及 MC-ICP-MS 高精确测定

Yuan Yuan Cheng; Guo Nai Li; Yang Zi Li; Li Deng; Mao Yong He; Lu Bai Yang Liu; Jia Xin Luo; Zhang Dong Jin

doi:10.19658/j.issn.1007-2802.2023.42.002

钾同位素的高效分离及 MC-ICP-MS 高精确测定

Translated title of the contribution: High-efficient purification and accurate determination of K isotope using MC-ICP-MS

Yuan Yuan Cheng
, Guo Nai Li
, Yang Zi Li
, Li Deng
, Mao Yong He
, Lu Bai Yang Liu
, Jia Xin Luo
, Zhang Dong Jin

CAS - Institute of Earth Environment
University of Chinese Academy of Sciences
Chinese Flight Test Establishment
Qinghai Normal University
Xi'an Institute for Innovative Earth Environment Research

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Potassium (K) is widely applied in earth sciences, biological sciences, environmental sciences and other fields. This study presents a method for high-efficient purification for a variety of samples and high-precision determination for K isotopes by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). Potassium in digested samples was separated by cation-exchange chromatography with AG 50W-X8 resin, and was eluted by 0. 5 mol / L HNO₃. It’s achieved a high recovery of K with the yield of >99. 9% and negligible blank (~ 10 ng K). Nevertheless, for samples with high contents of matrix elements (Li、 Na、 Mg、 Al、 V、 Cr、 Ca), two-step purification procedure is suggested. The purified samples were analysed by MC-ICP-MS using " cold plasma-low resolution" . The values of δ⁴¹K of international standards (rock、coal and biology) are consistent with literature, and the long-term precision is better than 0. 06‰ with good reproducibility.

Translated title of the contribution	High-efficient purification and accurate determination of K isotope using MC-ICP-MS
Original language	Chinese (Traditional)
Pages (from-to)	369-379
Number of pages	11
Journal	Bulletin of Mineralogy Petrology and Geochemistry
Volume	42
Issue number	2
DOIs	https://doi.org/10.19658/j.issn.1007-2802.2023.42.002
State	Published - 1 Mar 2023
Externally published	Yes

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@article{df188ea7aecd4c7d8925407847562e8f,

title = "钾同位素的高效分离及 MC-ICP-MS 高精确测定",

abstract = "Potassium (K) is widely applied in earth sciences, biological sciences, environmental sciences and other fields. This study presents a method for high-efficient purification for a variety of samples and high-precision determination for K isotopes by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). Potassium in digested samples was separated by cation-exchange chromatography with AG 50W-X8 resin, and was eluted by 0. 5 mol / L HNO3. It{\textquoteright}s achieved a high recovery of K with the yield of >99. 9\% and negligible blank (\textasciitilde{} 10 ng K). Nevertheless, for samples with high contents of matrix elements (Li、 Na、 Mg、 Al、 V、 Cr、 Ca), two-step purification procedure is suggested. The purified samples were analysed by MC-ICP-MS using {"} cold plasma-low resolution{"} . The values of δ41K of international standards (rock、coal and biology) are consistent with literature, and the long-term precision is better than 0. 06‰ with good reproducibility.",

keywords = "K isotope, K purification, MC-ICP-MS, determination",

author = "Cheng, \{Yuan Yuan\} and Li, \{Guo Nai\} and Li, \{Yang Zi\} and Li Deng and He, \{Mao Yong\} and Liu, \{Lu Bai Yang\} and Luo, \{Jia Xin\} and Jin, \{Zhang Dong\}",

year = "2023",

month = mar,

day = "1",

doi = "10.19658/j.issn.1007-2802.2023.42.002",

language = "繁体中文",

volume = "42",

pages = "369--379",

journal = "Bulletin of Mineralogy Petrology and Geochemistry",

issn = "1007-2802",

publisher = "Science Press ",

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TY - JOUR

T1 - 钾同位素的高效分离及 MC-ICP-MS 高精确测定

AU - Cheng, Yuan Yuan

AU - Li, Guo Nai

AU - Li, Yang Zi

AU - Deng, Li

AU - He, Mao Yong

AU - Liu, Lu Bai Yang

AU - Luo, Jia Xin

AU - Jin, Zhang Dong

PY - 2023/3/1

Y1 - 2023/3/1

N2 - Potassium (K) is widely applied in earth sciences, biological sciences, environmental sciences and other fields. This study presents a method for high-efficient purification for a variety of samples and high-precision determination for K isotopes by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). Potassium in digested samples was separated by cation-exchange chromatography with AG 50W-X8 resin, and was eluted by 0. 5 mol / L HNO3. It’s achieved a high recovery of K with the yield of >99. 9% and negligible blank (~ 10 ng K). Nevertheless, for samples with high contents of matrix elements (Li、 Na、 Mg、 Al、 V、 Cr、 Ca), two-step purification procedure is suggested. The purified samples were analysed by MC-ICP-MS using " cold plasma-low resolution" . The values of δ41K of international standards (rock、coal and biology) are consistent with literature, and the long-term precision is better than 0. 06‰ with good reproducibility.

AB - Potassium (K) is widely applied in earth sciences, biological sciences, environmental sciences and other fields. This study presents a method for high-efficient purification for a variety of samples and high-precision determination for K isotopes by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). Potassium in digested samples was separated by cation-exchange chromatography with AG 50W-X8 resin, and was eluted by 0. 5 mol / L HNO3. It’s achieved a high recovery of K with the yield of >99. 9% and negligible blank (~ 10 ng K). Nevertheless, for samples with high contents of matrix elements (Li、 Na、 Mg、 Al、 V、 Cr、 Ca), two-step purification procedure is suggested. The purified samples were analysed by MC-ICP-MS using " cold plasma-low resolution" . The values of δ41K of international standards (rock、coal and biology) are consistent with literature, and the long-term precision is better than 0. 06‰ with good reproducibility.

KW - K isotope

KW - K purification

KW - MC-ICP-MS

KW - determination

UR - https://www.scopus.com/pages/publications/85170637483

U2 - 10.19658/j.issn.1007-2802.2023.42.002

DO - 10.19658/j.issn.1007-2802.2023.42.002

M3 - 文章

AN - SCOPUS:85170637483

SN - 1007-2802

VL - 42

SP - 369

EP - 379

JO - Bulletin of Mineralogy Petrology and Geochemistry

JF - Bulletin of Mineralogy Petrology and Geochemistry

IS - 2

ER -

钾同位素的高效分离及 MC-ICP-MS 高精确测定

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