scholarly journals A Rapid and Simple Method for Lithium Purification and Isotopic Analysis of Geological Reference Materials by MC-ICP-MS

2020 ◽  
Vol 8 ◽  
Author(s):  
Guanhong Zhu ◽  
Jinlong Ma ◽  
Gangjian Wei ◽  
Le Zhang
Keyword(s):  
Reference Materials ◽  
Isotopic Analysis ◽  
Matrix Elements ◽  
Simple Method ◽  
Isotopic Compositions ◽  
Icp Ms ◽  
Single Column ◽  
Li Isotope ◽  
Column Procedure ◽  
Isotope Measurements

A simple method has been developed to purify lithium (Li) from matrix elements in geological reference materials, using a single-column packed with AGMP-50 cation exchange resin, followed by high-precision Li isotope measurements by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). A series of tests, such as different types of resin, loading amount of Li, loading volumes, and various eluents, were conducted to ascertain the optimal conditions for Li purification and the effects of intensity, acidity, and presence of potential matrix elements on Li isotope measurements were also evaluated. In our experiment, Al and high-field-strength elements (HFSEs), such as Ti, Zr, and Hf, were eluted by 0.2 M HCl + 0.3 M HF, and 0.73 M HCl was used to separate Li from other matrix elements, such as Na. This method is suitable for processing large amount of Li (60–270 ng) and enabling a Li recovery of close to 100%, with effective removal of matrix elements such as Na and Ca. Besides, our method achieves low matrix interferences (e.g., Na/Li << 1 and Ca/Li << 1 for rock and seawater via a single-column procedure; Ca/Li < 2 for carbonate via a two-column procedure) and also uses small volume of eluents and is rapid (~5 h), enabling a total separation to be completed in ~0.5 d. Using this method, we report Li isotopic compositions of various geological reference materials, including igneous rocks, seawater, and carbonate. The Li isotopic compositions are consistent with the data published previously for the analyzed reference materials. As such, the reported method is ideally suited for Li separation from multiple types of geological samples prior to isotopic analysis.

A novel procedure for separating iron from geological materials for isotopic analysis using MC-ICP-MS

2020 ◽  
Vol 35 (5) ◽  
pp. 873-877
Author(s):  
Guanhong Zhu ◽  
Jinlong Ma ◽  
Gangjian Wei ◽  
Yajun An
Keyword(s):  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Isotopic Analysis ◽  
Simple Method ◽  
Geological Materials ◽  
Icp Ms ◽  
Single Column

A simple method was developed for achieving Fe separation and involved the use of a single column packed with AGMP-50 cation-exchange resin.

Capabilities of laser ablation – ICP-TOF-MS coupling for isotopic analysis of individual uranium micrometric particles

2018 ◽  
Vol 33 (11) ◽  
pp. 1892-1902 ◽  
Author(s):  
Anne-Laure Ronzani ◽  
Fabien Pointurier ◽  
Martin Rittner ◽  
Olga Borovinskaya ◽  
Martin Tanner ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Time Of Flight ◽  
Isotopic Analysis ◽  
Ablation Time ◽  
Isotopic Compositions ◽  
Icp Ms ◽  
Tof Ms

Isotopic compositions of individual uranium micrometric particles are measured precisely by means of laser ablation – time of flight ICP-MS coupling.

Use of a Cu-selective resin for Cu preconcentration from seawater prior to its isotopic analysis by MC-ICP-MS

2020 ◽  
Vol 35 (11) ◽  
pp. 2732-2739
Author(s):  
Qian Wang ◽  
Lian Zhou ◽  
Lanping Feng ◽  
Jincun Liu ◽  
Jinhua Liu ◽  
...  
Keyword(s):  
Isotopic Analysis ◽  
Resin Column ◽  
Isotopic Compositions ◽  
Icp Ms

A combination of a Cu-selective resin column and an AG MP-1M resin column was employed for the determination of seawater Cu isotopic compositions.

Lithium isotopic composition of reference materials of biological origin TORT-2, DORM-2, TORT-3, DORM-4, SRM-1400 and ERM-CE278k

2021 ◽  
Author(s):  
Fanny Thibon ◽  
Lucas Weppe ◽  
Maryline Montanes ◽  
Philippe Telouk ◽  
Nathalie Vigier
Keyword(s):  
Isotopic Composition ◽  
Reference Materials ◽  
Soft Tissues ◽  
Biological Origin ◽  
International Reference ◽  
Icp Ms ◽  
Li Isotope

Li isotope compositions of soft tissues and bones from six international reference materials of biological origin has been characterized with MC-ICP-MS.

Precise and Accurate Determination of Lu and Hf Contents, and Hf Isotopic Compositions in Chinese Rock Reference Materials by MC‐ICP‐MS

2020 ◽  
Vol 44 (3) ◽  
pp. 553-565 ◽  
Author(s):  
Ming Yang ◽  
Yue‐Heng Yang ◽  
Noreen J. Evans ◽  
Lie‐Wen Xie ◽  
Chao Huang ◽  
...  
Keyword(s):  
Reference Materials ◽  
Accurate Determination ◽  
Isotopic Compositions ◽  
Icp Ms

scholarly journals Natural Clinopyroxene Reference Materials for in situ Sr Isotopic Analysis via LA-MC-ICP-MS

2020 ◽  
Vol 8 ◽  
Author(s):  
Han Zhao ◽  
Xin-Miao Zhao ◽  
P. J. Le Roux ◽  
Wen Zhang ◽  
Hao Wang ◽  
...  
Keyword(s):  
Reference Materials ◽  
Inductively Coupled Plasma ◽  
Isotopic Analysis ◽  
Ionization Mass ◽  
Sr Isotope ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Laser Systems ◽  
Increasing Demand

Clinopyroxene is a major host mineral for lithophile elements in the mantle lithosphere, and therefore, its origin is vital for constraints on mantle evolution and melt generation. In situ Sr isotopic measurement of clinopyroxene has been available since the recent development of laser ablation multicollector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) in the 2000s. Therefore, there is an increasing demand for natural clinopyroxene reference materials for Sr isotope microanalysis. In this contribution, we present six natural clinopyroxene reference materials from South Africa (JJG1424) and China (YY09-47, YY09-04, YY09-24, YY12-01, and YY12-02) for Sr isotope microanalysis. The Sr content of these clinopyroxenes ranges from 50 to 340 μg g−1, which covers most natural clinopyroxene compositions. Homogeneity of these potential reference materials were investigated and evaluated in detail over a 2-year period using 193-nm nanosecond and 257-nm femtosecond laser systems coupled to either a Neptune or Neptune Plus MC-ICP-MS. Additionally, the major and trace element of these clinopyroxenes were examined by electron probe microanalyzer (EPMA) as well as solution and laser ICP-MS. The in situ87Sr/86Sr values obtained for the six natural clinopyroxene reference materials agree well with data obtained using the thermal ionization mass spectrometer (TIMS) method. The Sr isotopic stability and homogeneity of these clinopyroxenes make them potential reference materials for in situ Sr microanalysis to correct instrumental fractionation or as quality control materials for analytical sessions. The new Sr isotope data provided here might be beneficial for microbeam analysis in the geochemical community.

scholarly journals Characterization of Four Copper Materials for Application as Reference Materials for High Precision Copper Isotope Analysis by Laser Ablation Inductively Coupled Plasma Multi-Collector Mass Spectrometry

2021 ◽  
Vol 9 ◽  
Author(s):  
Zhaoping Yang ◽  
Simon Edward Jackson ◽  
Thomas Skulski
Keyword(s):  
Normal Distribution ◽  
Reference Materials ◽  
Inductively Coupled Plasma ◽  
Inductively Coupled ◽  
Ms Analysis ◽  
Icp Ms ◽  
The Mean ◽  
Isotope Measurements ◽  
Cu Isotope

Laser ablation inductively coupled plasma multi-collector mass spectrometry (LA-MC-ICP-MS) allows rapid, in situ, highly precise measurements of Cu isotope ratios of native Cu and Cu-bearing minerals. However, the National Institute of Standards and Technology Cu-metal isotope standard NIST SRM976 that is commonly used to calibrate LA-MC-ICP-MS Cu isotope measurements of native Cu is no longer available. We have investigated the suitability of four Cu metal materials, SSC-1, SSC-3 and SSC-4 (cathode Cu metal rods) and CUPD-1 (Cu anode sawings), originally developed by the Canada Centre for Mineral and Energy Technology (CANMET) as certified reference materials for trace element analysis, as Cu isotope reference materials for LA-MC-ICP-MS analysis and solution nebulization (SN) of Cu. The Cu isotopic composition and homogeneity of these four materials were characterised by SN- and LA-MC-ICP-MS, and are reported for the first time. The bulk Cu isotopic compositions, expressed as δ65CuSRM976 in per mil (‰) relative to NIST SRM976 with combined uncertainties (U, k = 2), of SSC-1, SSC-3 and SSC-4, determined utilizing SN-MC-ICP-MS, are identical within analytical uncertainty at 0.03 ± 0.07‰ (n = 29), 0.04 ± 0.04‰ (n = 28), and 0.05 ± 0.08‰ (n = 29), respectively; the composition of CUPD-1 is 2.14 ± 0.08‰ (n = 28). The compositions are 0.01 ± 0.07‰ (n = 29), 0.04 ± 0.06‰ (n = 29), 0.03 ± 0.06‰ (n = 28) and 2.15 ± 0.06‰ (n = 28), respectively, relative to the European Reference Material ERM®-AE633 Cu isotope standard. The Cu isotope homogeneity of the four new reference materials was assessed by determining whether multiple individual in situ Cu isotope measurements made by LA-MC-ICP-MS analysis (43 µm spot size), using each of the other three reference materials as a calibrator, approximate a single normal distribution. We also investigate whether there are statistically significant differences between the mean δ65Cu values of three independent data sets for each of the Cu isotope reference materials using one-way analysis of variance (ANOVA). Normality tests (graphical assessment of normal distribution quantile-quantile plots, and the Shapiro-Wilk, Jarque-Bera and reduced chi-squared statistic tests) show that: 1) the Cu isotope data acquired on SSC-1, SSC-3, SSC-4 and CUPD-1 do not depart significantly from a normal distribution, 2) the scatter of the Cu isotope data is due to analytical uncertainty with 95% confidence, and 3) there are no other significant sources of scatter; e.g. heterogeneity of the reference materials. The results of one-way ANOVA reveal that the mean difference of the δ65Cu value for each of the reference materials SSC-1, SSC-3, SSC-4 and CUPD-1 is statistically not significant at the 0.05 level. The mean δ65CuSRM976 values with combined uncertainties (U, k = 2) of SSC-1, SSC-3, SSC-4 and CUPD-1, determined by LA-MC-ICP-MS using each of the other three reference materials as a calibration standard, are 0.03 ± 0.09‰ (n = 132), 0.05 ± 0.09‰ (n = 154), 0.03 ± 0.09‰ (n = 144) and 2.14 ± 0.10‰ (n = 106), respectively. These values are in agreement with those determined by SN-MC-ICP-MS analysis at the 95% confidence level and have excellent precision (2 s.d. ≤ 0.10‰). These results suggest that SSC-1, SSC-3, SSC-4 and CUPD-1 can be considered isotopically homogeneous at a spatial resolution of 43 μm, and they are suitable reference materials for calibration and quality control of in situ and solution nebulization Cu isotope analyses of Cu.

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