{"title":"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","authors":"Asako Shimada, Takehiko Tsukahara, Masao Nomura, Seiji Takeda","doi":"10.1007/s10967-024-09749-3","DOIUrl":null,"url":null,"abstract":"<p>Since the <sup>135</sup>Cs and <sup>137</sup>Cs concentration level of environmental soil in prefectures adjacent to Fukushima is low at about 5.5 × 10<sup>−15</sup> − 6 × 10<sup>−13</sup> g g<sup>−1</sup>, 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 <sup>135</sup>Cs/<sup>137</sup>Cs isotope ratio was obtained.</p>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"106 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Development of Cs separation methods from large amounts of soil samples to determine the 135Cs/137Cs isotope ratio\",\"authors\":\"Asako Shimada, Takehiko Tsukahara, Masao Nomura, Seiji Takeda\",\"doi\":\"10.1007/s10967-024-09749-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Since the <sup>135</sup>Cs and <sup>137</sup>Cs concentration level of environmental soil in prefectures adjacent to Fukushima is low at about 5.5 × 10<sup>−15</sup> − 6 × 10<sup>−13</sup> g g<sup>−1</sup>, 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 <sup>135</sup>Cs/<sup>137</sup>Cs isotope ratio was obtained.</p>\",\"PeriodicalId\":661,\"journal\":{\"name\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"volume\":\"106 1\",\"pages\":\"\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-09-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s10967-024-09749-3\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Radioanalytical and Nuclear Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s10967-024-09749-3","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
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.
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.