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Quantitative analysis of powder samples using screen-printing techniques as sample preparation methods for LA-ICP-MS

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Abstract

The combination of laser ablation and inductively coupled plasma mass spectrometry (LA-ICP-MS) offers a powerful tool for directly analyzing solid samples. However, LA-ICP-MS has a limitation in quantitative analyses owing to a requirement for matrix-matched standard materials. In this study, we have developed a sample preparation method that facilitates quantitative analyses by LA-ICP-MS. The sample powder is dispersed in a liquid resin and film-like samples are prepared from the resulting paste by a screen-printing technique. The sample includes the analyte spiked with internal standards and is prepared by mixing standard solutions in the sample paste. Because all reagents except for the sample powder are liquids, homogeneous samples can be easily obtained. The internal standard and concentration of the spiked analyte can be tailored for each sample, which is a requirement for accurate quantitative analyses. The amount of sample and concentration of the spiked analyte are controlled against an internal standard, enabling internal standardization without the need to have an element of known concentration in the sample. The accuracy of this method was evaluated by analyzing impurity elements in TiO2 powder; however, it is expected that other materials could also be analyzed. The versatility and flexibility of this method suggest great potential for quantitative analyses by LA-ICP-MS, for which reliable matrix-matched standard materials are required.

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Acknowledgements

Constructive reviews by two anonymous reviewers are gratefully acknowledged. We thank Edanz (https://jp.edanz.com/ac) for editing an English draft of this manuscript.

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Correspondence to Masahiro Kobayashi.

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Kobayashi, M., Namiki, H. & Hayashi, H. Quantitative analysis of powder samples using screen-printing techniques as sample preparation methods for LA-ICP-MS. ANAL. SCI. 39, 1757–1762 (2023). https://doi.org/10.1007/s44211-023-00390-w

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  • DOI: https://doi.org/10.1007/s44211-023-00390-w

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