Investigation of the Interaction between 1-Hydroxyethane-1,1'-diphosphonic Acid (HEDP) and Uranium(VI)

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• 作者：Christophe Jacopin ; Marcin Sawicki ; Gabriel Plancque ; Denis Doizi ; Fré ; dé ; ric Taran ; Eric Ansoborlo ; Badia Amekraz ; and Christophe Moulin
• 刊名：Inorganic Chemistry
• 出版年：2003
• 出版时间：August 11, 2003
• 年：2003
• 卷：42
• 期：16
• 页码：5015 - 5022
• 全文大小：156K
• 年卷期：v.42,no.16(August 11, 2003)
• ISSN：1520-510X

文摘

A detailed study, using a panel of spectroscopic analytical methods, of the complexation between 1-hydroxyethane-1,1'-diphosphonic acid (HEDP) and uranyl ion (UO₂²⁺) is reported. Results suggest that the metal complex ispresent as only 1:1 (metal/ligand) species at low concentration (<10^-4 M). The conditional constants of this complexwere determined at various pH using time-resolved laser-induced fluorescence (TRLIF) and electrospray ionizationmass spectrometry (ESI-MS). Further investigations indicate the presence of a 1:2 (metal/ligand) complex at higherconcentrations (~10^-2 M). Selectivity studies as well as structural aspects are presented.