Zinc isotope fractionation analyses by thermal ionization mass spectrometry and a double spiking technique

Ghidan, Osama Y.; Loss, Robert D.

doi:10.1016/j.ijms.2011.09.001

Cited by 11 publications

(5 citation statements)

References 48 publications

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“…Substantial progress was achieved after the introduction of the double spike technique for the correction of mass bias, which further reduced the external precision down to 0.04& (Bermin et al, 2006). Moreover, the same reproducibility of 0.04& was achieved using TIMS and the double spike method to determine Zn stable isotopes in natural samples (Ghidan & Loss, 2012).…”

Section: Determination Of Zn Stable Isotopesmentioning

confidence: 99%

Metal isotope complexation with environmentally relevant surfaces: Opening the isotope fractionation black box

Komárek

Ratié

Vaňková

et al. 2021

Critical Reviews in Environmental Science and Technology

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The number of studies using various stable isotope systems for tracing contamination sources and various biogeochemical processes is rapidly rising due to the increased availability of the techniques used for isotope analyses. However, in most cases, the resulting isotope data are influenced by many processes occurring within reactive environmental compartments, e.g., soils and sediments, such as sorption, precipitation, redox changes, interactions with plants and microorganisms, etc. Therefore, isotope tracing becomes challenging as it is crucial to identify and quantify the isotope fractionation extent during separate processes in this so-called "isotope fractionation black box". The main aim of this review is to (i) summarize literature data on fractionation of selected metal isotopes (Cd, Cu, Hg, Ni, Zn) after complexation with relevant environmental surfaces, e.g., oxyhydroxides, clay minerals, natural organic matter etc., (ii) briefly describe the analytical techniques and key procedures used for the determination of such data and (iii) provide suggestions and perspectives for future research, including a critical evaluation of specific issues related to isotope analyses and especially the interpretation of results. For example, concentration equilibrium usually differs from isotope fractionation equilibrium, metal coordination chemistry in solution is crucial to decipher metal isotopic fractionation, spectroscopic data are missing, different experimental conditions are often and potential precipitation and desorption reactions are not always considered, etc. Consistent presentation of adsorption/complexation data would also be highly beneficial in future studies.

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Section: Determination Of Zn Stable Isotopesmentioning

confidence: 99%

Metal isotope complexation with environmentally relevant surfaces: Opening the isotope fractionation black box

Komárek

Ratié

Vaňková

et al. 2021

Critical Reviews in Environmental Science and Technology

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“…The measured isotopic ratios of the Ti standard were normalized to 49 Ti/ 47 Ti = 0.749824, which was calculated by the measured Ti isotope composition of SPEX Ti standard (δ 49/47 Ti = −0.92 ± 0.13‰) relative to SRM 3162a, which has a traceable absolute Ti isotope composition being reported in the literature ( 49 Ti/ 47 Ti = 0.750517 , ). Similarly, isotope ratios of the Zn standard was normalized to 68 Zn/ 66 Zn = 0.66516 (calculated from δ 66/64 Zn = −0.36‰ of the HPS Zn and the reference ratio 68 Zn/ 66 Zn = 0.66540 for IRMM-3702), and the Sn isotope ratios of the Sn standard were normalized to 118 Sn/ 120 Sn = 0.74295 . Then, the normalized ratios were used for the isobaric spike calculation.…”

Section: Methodsmentioning

confidence: 99%

Isobaric Spike Method for Absolute Isotopic Ratio Determination by MC-ICP-MS

Shuai

Hui

2020

Anal. Chem.

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Absolute isotopic ratios are required for isobaric interference corrections, spike calibrations, and isotopic analysis by external normalization methods. However, high-precision natural isotopic abundance data are lacking for many elements, particularly those with less than four isotopes or having isobaric isotopes with other elements. In this study, we developed a method for absolute isotope ratio analysis, which integrates the concept of the double-spike method with isotopic analysis of element pairs that have isobaric isotopes. Using multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS), the isotopic composition of a sample can be derived by measuring a series of mixtures of the sample and a spike element that has an isobaric isotope with the element being analyzed. We applied this method to five pairs of elements (Ca–Ti, V–Ti, Cr–Ti, Ni–Zn, and In–Sn) and obtained the absolute isotopic ratios for Ca, V, Cr, Ni, and In, as well as the relative Ca isotopic composition. By simultaneous measurement of Ti and Ca isotopes, a quantitative relationship between the instrumental mass fractionation factors and element masses was developed. After correcting for the difference in instrumental mass fractionation factors, the obtained absolute ratios agree well with the literature data and have per mil level accuracy. This method has considerable potential in measuring the absolute isotopic ratios of elements that have isobaric isotope with other elements. Such precisely determined absolute isotopic ratios and the relationship between the instrumental mass fractionation factors and elemental masses will improve isobaric interference corrections, particularly when chemical purification is imperfect or during laser ablation analysis.

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“…These were hypothesised to exhibit up to a maximum of 0.037& deviation in the 26 Mg/ 24 Mg ratio (expressed as d 26 *Mg) as a result of the absence of the short-lived 26 Al isotope which would otherwise have decayed to 26 Mg over the rst 2 Ma aer solar system formation. The same group 189 investigated the 176 Lu-176 Hf decay system using the same instrumentation in order to highlight excess 176 Hf anomalies in chondrite meteorites, equating to a ca. 300 Ma excess in apparent age.…”

Section: Sample Preparationmentioning

confidence: 99%

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

Evans

Pisonero

Smith

et al. 2013

J. Anal. At. Spectrom.

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SUMMARY OF CONTENTS This review covers developments in 'Atomic Spectrometry'. It covers atomic emission, absorption, fluorescence and mass spectrometry, but excludes material on speciation and coupled techniques which is included in a separate review. It should be read in conjunctionwith the other related reviews in the series. [1][2][3][4][5][6] Sample introductionThis section covers developments in sample introduction for all instrumental methods. LiquidsLiquid sample introduction relates to methods wherein the sample is introduced into the instrument in the form of a liquid, such as through nebulization or into a thermal vaporizer; whereas in vapour generation the sample is initially in the form of a liquid but is converted to a vapour prior to introduction into the instrument. Sample pre-treatment.A general review of on-line preconcentration for ICP-MS has been published by Das et al. 7 , covering solid phase methods and including 63 references. Several reviews of sample pretreatment methods used for atomic spectrometry are worth noting because they focus on specific areas: Kocurova et al. 8and Jain and Verma 9 have reviewed advances in DLLME (53 references) and SDME (407 references) respectively; Zhao et al. the same authors studied the stability of the labelled complexes at different pH and temperature, and when subject to separation using LC. They reported a significant decrease in stability when LC separation was used, and some degradation at 37 °C compared to 2 °C.Li et al. An immunoassay-linked method using gold nano-particles has been developed by Jarujamrus et al. 33 . In this approach the monoclonal antibody-chloramphenicol was attached to a solid support. Antigen-chloramphenicol was labelled with gold nano-particles (10 nm) at pH 9.5, attached to a bovine serum albumin protein and mixed with unlabelled antigenchloramphenicol, which was then added to the antibody-chloramphenicol. for U and Th respectively in water samples.

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Zinc isotope fractionation analyses by thermal ionization mass spectrometry and a double spiking technique

Cited by 11 publications

References 48 publications

Metal isotope complexation with environmentally relevant surfaces: Opening the isotope fractionation black box

Metal isotope complexation with environmentally relevant surfaces: Opening the isotope fractionation black box

Isobaric Spike Method for Absolute Isotopic Ratio Determination by MC-ICP-MS

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

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