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<p>A series of in-house PdI<sub>2</sub> standards appropriate for AMS was prepared by quantitatively mixing the <sup>129</sup>I/<sup>127</sup>I isotope standard solution and <sup>127</sup>I solution. The dominant interferences from <sup>104,105</sup>Pd<sup>4+</sup> were successfully suppressed by adjusting the electrostatic cylindrical analyser, etc., to select the ion beams finely. As a result, the <sup>129</sup>I/<sup>127</sup>I atom ratios of PdI<sub>2</sub> 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 <sup>129</sup>I analysis in AMS that departs from conventional methods.</p>

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A new analytical technique utilizing the PdI2 target for measurement of 129I in environmental samples by accelerator mass spectrometry

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • Maki Honda,
  • Yuichi Takaku,
  • Aya Sakaguchi,
  • Hiroyuki Matsuzaki,
  • Keisuke Sueki

摘要

A series of in-house PdI2 standards appropriate for AMS was prepared by quantitatively mixing the 129I/127I isotope standard solution and 127I solution. The dominant interferences from 104,105Pd4+ were successfully suppressed by adjusting the electrostatic cylindrical analyser, etc., to select the ion beams finely. As a result, the 129I/127I atom ratios of PdI2 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 129I analysis in AMS that departs from conventional methods.