Kinetics of americium and europium extraction by tert-butylthiacalix[4]arene from alkaline media期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Kinetics of americium and europium extraction by tert-butylthiacalix[4]arene from alkaline media

Authors:	Kuzovkina Elena V Lavrinovich Elena A Novikov Alexander P Stepanova Ekaterina S Karavan Maria D Smirnov Igor V

Institution:	1.Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences, Kosygina pr., 19, Moscow, Russia, 119991 ;2.Khlopin Radium Institute, 2nd Murinsky pr., 28, Saint-Petersburg, Russia, 194021 ;3.Ozersk Institute of Technology, Pr. of Victory, 48, Ozersk, Russia, 456783 ;4.Saint-Petersburg State University, Universitetskaya emb., Saint-Petersburg, Russia, 199034 ;

Abstract:	Kinetics of ¹⁵²Eu and ²⁴¹Am extraction by nitrogen-bearing alkyl amino phenol oligomer YaRB and tert-butylthiacalix4]arene TCA from carbonate-alkaline media was studied. Both extractants efficiently extract americium and europium in pH interval 12–14. The maximum of americium extraction is located at the lower values of pH, compared with europium. YaRB extracts americium and europium faster than TCA, and at the same time, americium is extracted faster than europium by both extractants. In general, thiacalixarene TCA is regarded as more efficient extractant than alkyl amino phenol oligomer YaRB.

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