开发从大量土壤样本中分离铯的方法,以确定 135Cs/137Cs 同位素比率

IF 1.5 3区 化学 Q3 CHEMISTRY, ANALYTICAL
Asako Shimada, Takehiko Tsukahara, Masao Nomura, Seiji Takeda
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引用次数: 0

摘要

由于福岛县附近环境土壤中 135Cs 和 137Cs 的浓度水平较低,约为 5.5 × 10-15 - 6 × 10-13 g-1,因此需要大量土壤才能获得足够的量来精确测量。我们开发了两种可处理大量沥滤土壤溶液的铯分离方法:1) 使用钙[4]炔-双(t-辛基苯并冠醚-6)的连续丁基萃取法;2) 使用磷塘沽酸铵和阴阳离子交换树脂的选择性铯吸附组合法。这些方法适用于低 Cs 浓度样品,在测量 135Cs/137Cs 同位素比值方面获得了 0.8-2.1% 的良好精度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Development of Cs separation methods from large amounts of soil samples to determine the 135Cs/137Cs isotope ratio

Development of Cs separation methods from large amounts of soil samples to determine the 135Cs/137Cs isotope ratio

Since the 135Cs and 137Cs concentration level of environmental soil in prefectures adjacent to Fukushima is low at about 5.5 × 10−15 − 6 × 10−13 g g−1, a large amount of soil is required to obtain sufficient amount to measure them precisely. Two Cs separation methods which allow to treat large amounts of leached soil solution were developed: 1) A continuous butch extraction method using calix[4]arene-bis(t-octylbenzo-crown-6) and 2) A combination method of selective Cs adsorption using ammonium phosphotangstate and anion-cation exchange resins. These methods were applied to low Cs concentration samples, and good precision of 0.8–2.1% in the measurement of 135Cs/137Cs isotope ratio was obtained.

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来源期刊
CiteScore
2.80
自引率
18.80%
发文量
504
审稿时长
2.2 months
期刊介绍: An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.
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