{"title":"2-乙基己基膦酸2-乙基己基氢在己烷溶液中从含镱硝酸溶液中萃取镥","authors":"K. S. Bobrovskaya, R. A. Kuznetsov, M. N. Lisova","doi":"10.1134/S106636222503004X","DOIUrl":null,"url":null,"abstract":"<p>The extraction of lutetium with 0.5–2 M solutions of 2-ethylhexyl hydrogen 2-ethylhexylphosphonate (HEH[EHP]) in hexane from 0.5–2 M solutions of nitric acid containing ytterbium at a lutetium concentration of 0.57 mM (0.1 g/L) and lutetium to ytterbium concentration ratios from 1 : 1 to 1 : 50 was studied. The extraction mechanisms of both lanthanides are identical under the conditions studied. The effect of excess ytterbium on the distribution of lutetium during extraction is due to a decrease in the concentration of the free extractant. A model describing the dependence of the lutetium distribution ratio on the ytterbium concentration in the aqueous phase at various concentrations of the extractant and nitric acid is proposed; it satisfactorily agrees with the experimental data.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"67 3","pages":"259 - 267"},"PeriodicalIF":1.0000,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Extraction of Lutetium with Solutions of 2-Ethylhexyl Hydrogen 2-Ethylhexylphosphonate in Hexane from Nitric Acid Solutions Containing Ytterbium\",\"authors\":\"K. S. Bobrovskaya, R. A. Kuznetsov, M. N. Lisova\",\"doi\":\"10.1134/S106636222503004X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The extraction of lutetium with 0.5–2 M solutions of 2-ethylhexyl hydrogen 2-ethylhexylphosphonate (HEH[EHP]) in hexane from 0.5–2 M solutions of nitric acid containing ytterbium at a lutetium concentration of 0.57 mM (0.1 g/L) and lutetium to ytterbium concentration ratios from 1 : 1 to 1 : 50 was studied. The extraction mechanisms of both lanthanides are identical under the conditions studied. The effect of excess ytterbium on the distribution of lutetium during extraction is due to a decrease in the concentration of the free extractant. A model describing the dependence of the lutetium distribution ratio on the ytterbium concentration in the aqueous phase at various concentrations of the extractant and nitric acid is proposed; it satisfactorily agrees with the experimental data.</p>\",\"PeriodicalId\":747,\"journal\":{\"name\":\"Radiochemistry\",\"volume\":\"67 3\",\"pages\":\"259 - 267\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2025-08-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiochemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S106636222503004X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiochemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S106636222503004X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
摘要
研究了在含镱的0.5-2 M硝酸溶液中，在镥浓度为0.57 mM (0.1 g/L)，镥与镱的浓度比为1:1 ~ 1:50的条件下，用0.5-2 M的2-乙基己基磷酸氢（HEH[EHP]）溶液在己烷中萃取镥。在实验条件下，两种镧系元素的萃取机理相同。过量的镱对萃取过程中镥分布的影响是由于游离萃取剂浓度的降低。提出了在不同浓度的萃取剂和硝酸条件下，镥分布比与水相中镱浓度的关系模型；与实验数据吻合较好。
Extraction of Lutetium with Solutions of 2-Ethylhexyl Hydrogen 2-Ethylhexylphosphonate in Hexane from Nitric Acid Solutions Containing Ytterbium
The extraction of lutetium with 0.5–2 M solutions of 2-ethylhexyl hydrogen 2-ethylhexylphosphonate (HEH[EHP]) in hexane from 0.5–2 M solutions of nitric acid containing ytterbium at a lutetium concentration of 0.57 mM (0.1 g/L) and lutetium to ytterbium concentration ratios from 1 : 1 to 1 : 50 was studied. The extraction mechanisms of both lanthanides are identical under the conditions studied. The effect of excess ytterbium on the distribution of lutetium during extraction is due to a decrease in the concentration of the free extractant. A model describing the dependence of the lutetium distribution ratio on the ytterbium concentration in the aqueous phase at various concentrations of the extractant and nitric acid is proposed; it satisfactorily agrees with the experimental data.
期刊介绍：
Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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