Solvent Extraction of Technetium(VII) and Rhenium(VII) Using a Hexaoctylnitrilotriacetamide Extractant
Solvent Extraction of Technetium(VII) and Rhenium(VII) Using a Hexaoctylnitrilotriacetamide Extractant
复制标题
DOI：
10.2116/analsci.20c014
复制
发表时间：
2020-11
影响因子：
1.6
通讯作者：
K. Shimojo;Hideya Suzuki;K. Yokoyama;T. Yaita;A. Ikeda-Ohno
中科院分区：
文献类型：
--
作者：
K. Shimojo;Hideya Suzuki;K. Yokoyama;T. Yaita;A. Ikeda-Ohno
据报道，使用由三个酰胺基团和一个叔胺组成的三足萃取剂 N,NN',N',N“,N”-六正辛基次氮基三乙酰胺 (HONTA) 进行液液萃取去除高锝酸盐 (^99TcO^4–) 和高铼酸盐 (ReO^4–)。萃取行为与使用烷基二酰胺胺（ADAAM(Oct) 和 ADAAM(EH)）以及商业胺型萃取剂三辛胺 (TOA) 的萃取行为进行了比较。 HONTA通过质子共萃取在pH 1.0至2.5范围内定量萃取^99TcO^4^-和ReO^4–。萃取剂萃取性能提高的顺序为HONTA>ADAAM(Oct)>ADAAM(EH)>TOA。使用中性水溶液作为接收相成功地反萃取萃取相中的^99TcO4–和ReO^4–，并且在重复使用五次后仍保持HONTA的萃取能力。
Liquid-liquid extraction for the removal of pertechnetate (^99TcO^4–) and perrhenate (ReO^4–) is reported based on using the tripodal extractant N,NN’,N’,N“,N” -hexa-n-octylnitrilotriacetamide (HONTA) composed of three amide groups and a tertiary amine. The extraction behaviors were compared with those using alkyldiamideamines (ADAAM(Oct) and ADAAM(EH)), and the commercial amine-type extractant, trioctylamine (TOA). HONTA quantitatively extracted ^99TcO^4^- and ReO^4–in the pH range from 1.0 to 2.5 by the co-extraction of protons. The extraction performance of the extractants was improved in the order of HONTA > ADAAM(Oct) > ADAAM(EH) > TOA. ^99TcO4–and ReO^4–in the extracting phase were successfully stripped using neutral aqueous solutions as the receiving phase, and the extraction ability of HONTA was maintained after five repeated uses.