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A New analytical technique utilizing the PdI$$_{2}$$ target for measurement of $$^{129}$$I in environmental samples by accelerator mass spectrometry

Honda, Maki   ; Takaku, Yuichi*; Sakaguchi, Aya*; Matsuzaki, Hiroyuki*; Sueki, Keisuke*

A series of in-house PdI$$_{2}$$ standards appropriate for AMS was prepared by quantitatively mixing the $$^{129}$$I/$$^{127}$$I isotope standard solution and $$^{127}$$I solution. The dominant interferences from $$^{104, 105}$$Pd $$^{4+}$$ were successfully suppressed by adjusting the electrostatic cylindrical analyser, etc., to select the ion beams finely. As a result, the $$^{129}$$I/$$^{127}$$I atom ratios of PdI$$_{2}$$ prepared from the seawater and dolomite samples agreed with those prepared as AgI, respectively. The pretreatment time for the new method was shortened by 33% compared to the conventional method. This study demonstrated a new approach to $$^{129}$$I analysis in AMS that departs from conventional methods.

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English

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Journal of Radioanalytical and Nuclear Chemistry

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Pages

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12 Pages

Publication Year/Month

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2025/08

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Paper URL

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https://doi.org/10.1007/s10967-025-10324-7

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Keywords

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Accelerator mass spectrometry; Iodine-129; Palladium(II) iodine

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