Thermo-responsive metal-chelating surfactants permit the solvent-free, cloud point extraction of uranyl nitrate and afford a real molecular economy compared to conventional separation techniques.
热响应金属螯合表面活性剂可实现硝酸铀的无溶剂浊点萃取,与传统分离技术相比,具有真正的分子经济性。
Strzelbicki, Jerzy; Charewicz, Witold; Beger, Jorg, Canadian Journal of Chemistry, 1988, vol. 66, p. 1695 - 1700
Chromium(VI) oxide oxidation of non-ethoxylated and ethoxylated alcohols for determination by electrospray ionization mass spectrometry
作者:Miriam Beneito-Cambra、Virginia Bernabé-Zafón、Ernesto F. Simó-Alfonso、Guillermo Ramis-Ramos
DOI:10.1002/rcm.4624
日期:2010.7.30
ethoxylated alcohols was investigated. The analytes were oxidized with chromium(VI) oxide and the resulting carboxylic and ethoxy‐carboxylic acids were isolated by extraction with ethyl acetate; the extracts were alkalinized and infused into the ESI‐MS system working in the negative‐ion mode. The yields of the combined oxidation‐extraction were ca. 100% for non‐ethoxylated fatty alcohols dissolved in
Heat-sensitive compounds exhibitng a cloud point which can be used as extractants for the separation of metals in aqueous solution
申请人:Commissariat a L'Energie Atomique
公开号:US07015340B2
公开(公告)日:2006-03-21
The invention relates to a heat-sensitive compound having the property of being soluble in water below a critical temperature Tc and insoluble in water above this temperature Tc, this property being thermally reversible, characterized in that it comprises a first amphiphilic and thermally reversible part corresponding to one of the following formulae (I) and (II):
in which i is an integer ranging from 1 to 20 and j is an integer ranging from 3 to 30.
This compound can be used to extract a chemical entity, such as uranium.