Analytical Capability of High-Time Resolution-Multiple Collector-Inductively Coupled Plasma-Mass Spectrometry for the Elemental and Isotopic Analysis of Metal Nanoparticles
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- Hirata Takafumi
- Geochemical Research Center, The University of Tokyo
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- Yamashita Shuji
- Geochemical Research Center, The University of Tokyo
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- Ishida Mirai
- Technology and Intellectual Property HQ, TDK
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- Suzuki Toshihiro
- Geochemical Research Center, The University of Tokyo
Abstract
<p>We measured the Re/Os (185Re/188Os) and 187Os/188Os ratios from nanoparticles (NPs) using a multiple collector-inductively coupled plasma-mass spectrometer equipped with high-time resolution ion counters (HTR-MC-ICP-MS). Using the HTR-MC-ICP-MS system developed in this study, the simultaneous data acquisition of four isotopes was possible with a time resolution of up to 10 μs. This permits the quantitative analysis of four isotopes to be carried out from transient signals (e.g., <0.6 ms) emanating from the NPs. Iridium–Osmium NPs were produced from a naturally occurring Ir–Os alloy (ruthenosmiridium from Hokkaido, Japan; osmiridium from British Columbia, Canada; iridosmine from the Urals region of Russia) through a laser ablation technique, and the resulting nanoparticles were collected by bubbling water through a suspension. The 187Os/188Os ratios for individual NPs varied significantly, mainly due to the counting statistics of the 187Os and 188Os signals. Despite the large variation in the measured ratios, the resulting 187Os/188Os ratios for three Ir–Os bearing minerals, were 0.121±0.013 for Hokkaido, 0.110±0.012 for British Columbia, and 0.122±0.020 for the Urals, and these values were in agreement with the ratios obtained by the conventional laser ablation-MC-ICP-MS technique. The data obtained here provides a clear demonstration that the HTR-MC-ICP-MS technique can become a powerful tool for monitoring elemental and isotope ratios from NPs of multiple components.</p>
Journal
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- Mass Spectrometry
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Mass Spectrometry 9 (1), A0085-A0085, 2020-06-10
The Mass Spectrometry Society of Japan
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Details 詳細情報について
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- CRID
- 1390566775140107392
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- NII Article ID
- 130007854034
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- ISSN
- 21865116
- 2187137X
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed