Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MS

This study performed a series of comparable experiments (with or without column chromatography) to evaluate whether non-deviated Cu isotope ratios can be obtained directly by Nu Plasma II multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS) using standard-sample bracketing with G...

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Main Authors: Yan Zhang, Zhian Bao, Nan Lv, Kaiyun Chen, Chunlei Zong, Honglin Yuan
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-07-01
Series:Frontiers in Chemistry
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fchem.2020.00609/full
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author Yan Zhang
Zhian Bao
Nan Lv
Kaiyun Chen
Chunlei Zong
Honglin Yuan
author_facet Yan Zhang
Zhian Bao
Nan Lv
Kaiyun Chen
Chunlei Zong
Honglin Yuan
author_sort Yan Zhang
collection DOAJ
description This study performed a series of comparable experiments (with or without column chromatography) to evaluate whether non-deviated Cu isotope ratios can be obtained directly by Nu Plasma II multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS) using standard-sample bracketing with Ga as internal mass bias correction model (C-SSBIN) without column chromatography. Twelve Cu-dominated minerals (copper plate, native copper, chalcopyrite, bornite, chalcocite, digenite, covellite, tetrahedrite, azurite, malachite, atacamite, and cyanotrichite) displayed little drift in δ65Cu values compared with those of minerals with column chromatography, with Δδ65Cuwithout−with ranging from −0.04 to +0.02‰. This means that Cu isotope ratios in Cu-dominated minerals can be achieved without column chromatography, due to the simple matrix and the stability of the machine by using C-SSBIN mode. The acidity and internal standard concentration mismatch effects, as well as the matrix effect, were strictly assessed by Nu Plasma II MC-ICP-MS in a wet-plasma mode in the State Key Laboratory of Continental Dynamics (SKLCD). Finally, a long-term reproducibility of better than ±0.03‰ [n = 38, 2 standard deviations (2s)] were achieved by repeatedly measuring chalcopyrite without column chromatography over 4 months.
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spelling doaj.art-b3f84ce075cf4857a6cfc6963359ae702022-12-22T01:07:41ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462020-07-01810.3389/fchem.2020.00609547052Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MSYan ZhangZhian BaoNan LvKaiyun ChenChunlei ZongHonglin YuanThis study performed a series of comparable experiments (with or without column chromatography) to evaluate whether non-deviated Cu isotope ratios can be obtained directly by Nu Plasma II multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS) using standard-sample bracketing with Ga as internal mass bias correction model (C-SSBIN) without column chromatography. Twelve Cu-dominated minerals (copper plate, native copper, chalcopyrite, bornite, chalcocite, digenite, covellite, tetrahedrite, azurite, malachite, atacamite, and cyanotrichite) displayed little drift in δ65Cu values compared with those of minerals with column chromatography, with Δδ65Cuwithout−with ranging from −0.04 to +0.02‰. This means that Cu isotope ratios in Cu-dominated minerals can be achieved without column chromatography, due to the simple matrix and the stability of the machine by using C-SSBIN mode. The acidity and internal standard concentration mismatch effects, as well as the matrix effect, were strictly assessed by Nu Plasma II MC-ICP-MS in a wet-plasma mode in the State Key Laboratory of Continental Dynamics (SKLCD). Finally, a long-term reproducibility of better than ±0.03‰ [n = 38, 2 standard deviations (2s)] were achieved by repeatedly measuring chalcopyrite without column chromatography over 4 months.https://www.frontiersin.org/article/10.3389/fchem.2020.00609/fullCu isotopeCu-dominated mineralscolumn chromatographyMC-ICP-MSC-SSBIN
spellingShingle Yan Zhang
Zhian Bao
Nan Lv
Kaiyun Chen
Chunlei Zong
Honglin Yuan
Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MS
Frontiers in Chemistry
Cu isotope
Cu-dominated minerals
column chromatography
MC-ICP-MS
C-SSBIN
title Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MS
title_full Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MS
title_fullStr Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MS
title_full_unstemmed Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MS
title_short Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MS
title_sort copper isotope ratio measurements of cu dominated minerals without column chromatography using mc icp ms
topic Cu isotope
Cu-dominated minerals
column chromatography
MC-ICP-MS
C-SSBIN
url https://www.frontiersin.org/article/10.3389/fchem.2020.00609/full
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AT nanlv copperisotoperatiomeasurementsofcudominatedmineralswithoutcolumnchromatographyusingmcicpms
AT kaiyunchen copperisotoperatiomeasurementsofcudominatedmineralswithoutcolumnchromatographyusingmcicpms
AT chunleizong copperisotoperatiomeasurementsofcudominatedmineralswithoutcolumnchromatographyusingmcicpms
AT honglinyuan copperisotoperatiomeasurementsofcudominatedmineralswithoutcolumnchromatographyusingmcicpms