Optimizing Zr-doped MC-ICP-MS sample-standard bracketing to simultaneously determine 87Sr/86Sr and δ88Sr for high sample-throughput

IF 3.2 2区 化学 Q1 SPECTROSCOPY Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2024-05-26 DOI:10.1016/j.sab.2024.106955
Carina T. Gerritzen, Steven Goderis, Hannah F. James, Christophe Snoeck
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Abstract

In recent years, the increasing demand for extensive strontium (Sr) datasets across various scientific fields has prompted the development of fast, precise, and reliable protocols. These protocols aim to achieve high sample-throughput without compromising data quality. A novel method termed the zirconium (Zr) doped sample-standard bracketing (SSB) has been recently introduced for isotope measurements using multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). This method allows for simultaneous acquisition of 87Sr/86Sr and δ88Sr data without the need for sample spiking. However, the reliability of this method in handling large datasets and ensuring long-term reproducibility requires additional documentation. A comprehensive examination of the reliability of Sr isotope data over two years involves the implementation of systematic tests on reference materials from the National Institute of standards and technology (NIST) with the standard reference material (SRM) numbers: 1400, 1515, 987, 2910b, 1486, as well as a Hawaiian volcano observatory basalt (BHVO-1). The results of this study lead to the definition of a set of quality control parameters. The developed protocol applies various controls to ensure precise matching of Sr and Zr concentrations for both the samples and the bracketing standard (NIST SRM 987), along with the identification of instrumental biases. The outlined quality control ensures the reproducibility of the results (87Sr/86Sr = 0.710247 ± 0.000026, 2SD, n = 557; and δ88Sr = 0.001 ± 0.053 ‰, 2SD, n = 537 for NIST SRM 987), proving invaluable for archaeological, geological, and ecological studies requiring the fast acquisition of extensive datasets (n > 100) to create isotopic baselines.

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优化掺锆 MC-ICP-MS 样品标准括弧,同时测定 87Sr/86Sr 和 δ88Sr 以实现高样品通量
近年来,各科学领域对大量锶(Sr)数据集的需求不断增加,促使人们开发出快速、精确、可靠的方案。这些方案的目标是在不影响数据质量的前提下实现高样品通量。最近推出了一种新方法,称为掺锆样品标准括弧(SSB),用于使用多收集器电感耦合等离子体质谱法(MC-ICP-MS)进行同位素测量。这种方法可同时获取 Sr/Sr 和 δSr 数据,而无需添加样品。然而,这种方法在处理大型数据集和确保长期可重复性方面的可靠性还需要更多的文献资料。对锶同位素数据的可靠性进行为期两年的全面检查,包括对美国国家标准与技术研究院(NIST)提供的标准参考材料(SRM)编号进行系统测试:1400、1515、987、2910b、1486 以及夏威夷火山观测站玄武岩 (BHVO-1)。根据研究结果,确定了一套质量控制参数。所制定的规程采用了各种控制措施,以确保样品和括号标准(NIST SRM 987)的 Sr 和 Zr 浓度精确匹配,并识别仪器偏差。概述的质量控制确保了结果的可重复性(Sr/Sr = 0.710247 ± 0.000026, 2SD, = 557;NIST SRM 987 的 δSr = 0.001 ± 0.053 ‰, 2SD, = 537),这对于需要快速获取大量数据集(> 100)以创建同位素基线的考古、地质和生态研究来说是非常有价值的。
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来源期刊
CiteScore
6.10
自引率
12.10%
发文量
173
审稿时长
81 days
期刊介绍: Spectrochimica Acta Part B: Atomic Spectroscopy, is intended for the rapid publication of both original work and reviews in the following fields: Atomic Emission (AES), Atomic Absorption (AAS) and Atomic Fluorescence (AFS) spectroscopy; Mass Spectrometry (MS) for inorganic analysis covering Spark Source (SS-MS), Inductively Coupled Plasma (ICP-MS), Glow Discharge (GD-MS), and Secondary Ion Mass Spectrometry (SIMS). Laser induced atomic spectroscopy for inorganic analysis, including non-linear optical laser spectroscopy, covering Laser Enhanced Ionization (LEI), Laser Induced Fluorescence (LIF), Resonance Ionization Spectroscopy (RIS) and Resonance Ionization Mass Spectrometry (RIMS); Laser Induced Breakdown Spectroscopy (LIBS); Cavity Ringdown Spectroscopy (CRDS), Laser Ablation Inductively Coupled Plasma Atomic Emission Spectroscopy (LA-ICP-AES) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). X-ray spectrometry, X-ray Optics and Microanalysis, including X-ray fluorescence spectrometry (XRF) and related techniques, in particular Total-reflection X-ray Fluorescence Spectrometry (TXRF), and Synchrotron Radiation-excited Total reflection XRF (SR-TXRF). Manuscripts dealing with (i) fundamentals, (ii) methodology development, (iii)instrumentation, and (iv) applications, can be submitted for publication.
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