EXAFS investigation of uranium(VI) complexes formed at Bacillus cereus and Bacillus sphaericus surfaces

被引：72

作者：

Hennig, C

Panak, PJ

Reich, T

Rossberg, A

Raff, J

Selenska-Pobell, S

Matz, W

Bucher, JJ

Bernhard, G

Nitsche, H

机构：

[1] Forschungszentrum Rossendorf EV, Inst Radiochem, D-01314 Dresden, Germany

[2] Forschungszentrum Rossendorf EV, Inst Ion Beam Phys & Mat Res, D-01314 Dresden, Germany

[3] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

来源：

RADIOCHIMICA ACTA | 2001年 / 89卷 / 10期

关键词：

EXAFS; uranium complexation; Bacillus cereus; Bacillus sphaericus;

D O I：

10.1524/ract.2001.89.10.625

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Uranium(VI) complex formation at vegetative cells and spores of Bacillus cereus and Bacillus sphaericus was studied using uranium L-II-edge and LIII-edge extended X-ray absorption fine structure (EXAFS) spectroscopy. A comparison of the measured equatorial U-O distances and other EXAFS structural parameters of uranyl species formed at the Bacillus strains with those of the uranyl structure family indicates that the uranium is predominantly bound as uranyl complexes with phosphoryl residues.

引用

页码：625 / 631

页数：7

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[1] Evaluation of microscopic techniques to observe iron precipitation in a natural microbial biofilm [J].