{"title":"High-Precision Sn Isotopic Measurement in Geological Materials by Double-Spike MC-ICP-MS","authors":"Wenrui Song, Chuanwei Zhu, Hanjie Wen, Yuxu Zhang, Zerui Liu, Meifu Zhou","doi":"10.1111/ggr.12590","DOIUrl":null,"url":null,"abstract":"<p>Tin isotope ratios of eight different geological reference materials were determined using Neptune and Neoma (Thermo Fisher, USA) multi-collector-inductively coupled plasma-mass spectrometry (MC-ICP-MS) systems using the <sup>117</sup>Sn-<sup>122</sup>Sn double-spike technique. Tin was purified by two-stage ion-exchange chromatography with a recovery of 85% ± 5%, with isobarically interfering matrix elements being reduced to negligible levels. Doping experiments indicated that the Neoma instrument was less affected by isobaric interferences than the Neptune instrument. The determined δ<sup>124/116</sup>Sn<sub>SRM3161a</sub> values are consistent with published values, and the long-term (> 6 months) intermediate precision was better than ±0.01‰ amu<sup>−1</sup> for both instruments. The method allows the Sn isotope ratios of samples containing ~ 2 ng of Sn to be precisely determined with an Sn solution concentration of 1 ng g<sup>−1</sup>.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"49 1","pages":"245-258"},"PeriodicalIF":2.7000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geostandards and Geoanalytical Research","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ggr.12590","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
Tin isotope ratios of eight different geological reference materials were determined using Neptune and Neoma (Thermo Fisher, USA) multi-collector-inductively coupled plasma-mass spectrometry (MC-ICP-MS) systems using the 117Sn-122Sn double-spike technique. Tin was purified by two-stage ion-exchange chromatography with a recovery of 85% ± 5%, with isobarically interfering matrix elements being reduced to negligible levels. Doping experiments indicated that the Neoma instrument was less affected by isobaric interferences than the Neptune instrument. The determined δ124/116SnSRM3161a values are consistent with published values, and the long-term (> 6 months) intermediate precision was better than ±0.01‰ amu−1 for both instruments. The method allows the Sn isotope ratios of samples containing ~ 2 ng of Sn to be precisely determined with an Sn solution concentration of 1 ng g−1.
采用海王星和Neoma （Thermo Fisher， USA）多收集器-电感耦合等离子体质谱（MC-ICP-MS）系统，采用117Sn-122Sn双峰技术，测定了8种不同地质标准物质的锡同位素比率。采用两级离子交换色谱法纯化锡，回收率为85%±5%，等压干扰基质元素降低到可忽略不计的水平。掺杂实验表明Neoma仪器受等压干扰的影响比Neptune仪器小。测定的δ124/116SnSRM3161a值与已发表的值一致，两种仪器的长期（>； 6个月）中间精度均优于±0.01‰amu−1。该方法可以在Sn溶液浓度为1 ng g−1的情况下，精确测定含~ 2 ng Sn样品的Sn同位素比值。
期刊介绍：
Geostandards & Geoanalytical Research is an international journal dedicated to advancing the science of reference materials, analytical techniques and data quality relevant to the chemical analysis of geological and environmental samples. Papers are accepted for publication following peer review.
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