In order to carry out strontium (Sr) isotope analysis, glass artefacts from South Asia were sampled with portable laser ablation (pLA), a relatively novel sampling technique that leaves damage invisible to the naked eye. Subsequently, thermal ionization mass spectrometry (TIMS) was used to obtain Sr isotope ratios after sample dissolution and separation. In this study, the goal was twofold: to determine whether the measurements of Sr isotope ratios were impacted by using a portable laser as a sample tool; and to assess the pertinence of using Sr isotope ratios to provenance Indian glass. Despite a deterioration in the precision of the measurement of the Sr isotope ratios for artefacts sampled with pLA compared with the traditional sampling method, the Sr isotope ratios of certain Indian glass are so different that this does not affect their separation but a comparison of data sets obtained using standard methods and pLA might be challenging.

中文翻译：

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使用便携式激光烧蚀采样分析南亚古玻璃中的锶同位素

为了进行锶（Sr）同位素分析，使用便携式激光烧蚀（pLA）对来自南亚的玻璃制品进行了采样，这是一种相对新颖的采样技术，可以使肉眼看不见损坏。随后，在样品溶解和分离后，使用热电离质谱（TIMS）来获得Sr同位素比。在这项研究中，目标是双重的：确定是否使用便携式激光作为采样工具来影响Sr同位素比的测量；并评估使用Sr同位素比率与起源印度玻璃的相关性。尽管与传统的采样方法相比，用pLA采样的伪像的Sr同位素比的测量精度有所下降，