Complexation and back extraction of various metals by water-soluble diglycolamide.

Full Abstract

Water-soluble ligands, N,N,N',N'-tetramethyldiglycolamide (TMDGA), N,N,N',N'-tetraethyldiglycolamide (TEDGA), N,N,N',N'-tetrapropyldiglycolamide (TPDGA) and N,N-dipropyldiglycolamic acid (DPDGAc) were prepared and their abilities to complex with and to back-extract the metal cations were investigated. These results indicate that the DGA series and DPDGAc have a stronger complexing ability with Am(III) and Pu(IV) than comparable carboxylic and aminopolycarboxylic acids. Among these ligands, the trend of the strength of their complexing ability is TPDGA approximately TEDGA > TMDGA approximately DPDGAc. TPDGA has significant loss to the extraction solvent due to its high hydrophobicity. It is evident from the present work that TEDGA is the best reagent for the reverse-extraction of not only An(III), (IV) but also Ca(II), Sc(III), Y(III), Zr(IV), La(III), Hf(IV), and Bi(III).

Author information

Author/s: Sasaki, Yuji (Y); Sugo, Yumi (Y); Kitatsuji, Yoshihiro (Y); Kirishima, Akira (A); Kimura, Takaumi (T); Choppin, Gregory R (GR);

Affiliation: Japan Atomic Energy Agency, Japan. sasaki.yuji(-atsign-)jaea.go.jp

Journal and publication information

Publication Type: Journal Article

Journal: Analytical sciences : the international journal of the Japan Society for Analytical Chemistry (Anal Sci), published in Japan. (Language: eng)

Reference: 2007-Jun; vol 23 (issue 6) : pp 727-31

Dates: Created 2007/06/18; Completed 2007/07/31;

PMID: 17575358, status: PubMed-not-MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

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