{"title":"液体闪烁计数法快速测定海水中Y-90的改进方法","authors":"Mihriban Şahin, Nihal Kaya","doi":"10.1007/s10967-025-10275-z","DOIUrl":null,"url":null,"abstract":"<div><p>An improved method is described to determine the activity of <sup>90</sup>Sr in seawater samples, through the separation of the daughter <sup>90</sup>Y at equilibrium. The procedures are based on a modified HDEHP solvent extraction in combination with liquid scintillation counting. The validation of the method has been performed by using the samples from the IAEA-RML-2019, IAEA-RML-2023 and IAEA-RML-2024 proficiency tests organized by International Atomic Energy Agency (IAEA). In this proposed method, a fast and efficient two-step radiochemical separation technique was used for the separation of Sr/Y by using an extraction technique with 10% HDEHP after both Sr<sup>2+</sup> and Y<sup>3+</sup> were co-precipitated in seawater in the form of oxalate. This method provided good enough separation of seawater from over-dominant salts and an effective radiochemical separation process with 61–81% chemical recovery of <sup>90</sup>Y. The activity of <sup>90</sup>Y was measured by Cerenkov counting using a Quantulus 1220 model liquid scintillation counter (LSC).</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 8","pages":"5389 - 5396"},"PeriodicalIF":1.6000,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A modified method for rapid determination of Y-90 in seawater by liquid scintillation counting\",\"authors\":\"Mihriban Şahin, Nihal Kaya\",\"doi\":\"10.1007/s10967-025-10275-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>An improved method is described to determine the activity of <sup>90</sup>Sr in seawater samples, through the separation of the daughter <sup>90</sup>Y at equilibrium. The procedures are based on a modified HDEHP solvent extraction in combination with liquid scintillation counting. The validation of the method has been performed by using the samples from the IAEA-RML-2019, IAEA-RML-2023 and IAEA-RML-2024 proficiency tests organized by International Atomic Energy Agency (IAEA). In this proposed method, a fast and efficient two-step radiochemical separation technique was used for the separation of Sr/Y by using an extraction technique with 10% HDEHP after both Sr<sup>2+</sup> and Y<sup>3+</sup> were co-precipitated in seawater in the form of oxalate. This method provided good enough separation of seawater from over-dominant salts and an effective radiochemical separation process with 61–81% chemical recovery of <sup>90</sup>Y. The activity of <sup>90</sup>Y was measured by Cerenkov counting using a Quantulus 1220 model liquid scintillation counter (LSC).</p></div>\",\"PeriodicalId\":661,\"journal\":{\"name\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"volume\":\"334 8\",\"pages\":\"5389 - 5396\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2025-09-03\",\"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://link.springer.com/article/10.1007/s10967-025-10275-z\",\"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://link.springer.com/article/10.1007/s10967-025-10275-z","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
A modified method for rapid determination of Y-90 in seawater by liquid scintillation counting
An improved method is described to determine the activity of 90Sr in seawater samples, through the separation of the daughter 90Y at equilibrium. The procedures are based on a modified HDEHP solvent extraction in combination with liquid scintillation counting. The validation of the method has been performed by using the samples from the IAEA-RML-2019, IAEA-RML-2023 and IAEA-RML-2024 proficiency tests organized by International Atomic Energy Agency (IAEA). In this proposed method, a fast and efficient two-step radiochemical separation technique was used for the separation of Sr/Y by using an extraction technique with 10% HDEHP after both Sr2+ and Y3+ were co-precipitated in seawater in the form of oxalate. This method provided good enough separation of seawater from over-dominant salts and an effective radiochemical separation process with 61–81% chemical recovery of 90Y. The activity of 90Y was measured by Cerenkov counting using a Quantulus 1220 model liquid scintillation counter (LSC).
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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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