An X-ray Photoelectron Study of the Interaction of Uranyl Group with Sulfosuccinyl Chitosan

被引：0

作者：

Veleshko, I. E. ^{[1
]}

Veleshko, A. N. ^{[1
]}

Teterin, A. Yu. ^{[1
]}

Maslakov, K. I. ^{[1
]}

Teterin, Yu. A. ^{[1
]}

Ivanov, K. E. ^{[1
]}

Rumyantseva, E. V. ^{[1
]}

Levov, A. N. ^{[2
]}

Varlamov, V. P. ^{[2
]}

机构：

[1] Natl Res Ctr, Kurchatov Inst, Pl Akad Kurchatova 1, Moscow 123182, Russia

[2] Russian Acad Sci, Bioinzheneriya Ctr, Moscow, Russia

来源：

RADIOCHEMISTRY | 2012年 / 54卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

uranium; sulfosuccinyl chitosan; reduction; complexation; X-ray photoelectron spectra;

D O I：

10.1134/S1066362212020038

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Interaction of uranium with low-molecular-weight sulfosuccinyl chitosan (SSLMWC) from sulfate solutions was studied by X-ray photoelectron spectroscopy. The interaction involves formation of complexes with the uranyl group on the SSLMWC surface. The equatorial plane of these complexes can contain nitrogen atom of the amino group and oxygen atoms of the sulfato and sulfo groups SO42- and -SO3H, carboxy groups, and free hydroxy groups. On keeping the complex in a vacuum, two chemically nonequivalent states of U ions, U4+ and UO22+, are observed. The U4+ formation in solid U-containing samples of chitosan and SSLMWC is attributed to the radical reaction of the UO22+ reduction with the primary hydroxy group of chitosan in a vacuum of the spectrometer under the action of X-ray radiation.

引用

页码：122 / 127

页数：6

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