Sorption of neptunium onto goethite in the presence of humic acids with different hydroquinone group content

被引：11

作者：

Kalmykov, S. N. ^{[1
]}

Schaefer, T. ^{[2
]}

Claret, F. ^{[3
]}

Perminova, I. V. ^{[1
]}

Petrova , A. B. ^{[1
]}

Shcherbina, N. S. ^{[1
]}

Teterin, Y. A. ^{[4
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia

[2] Forschungszentrum Karlsruhe, INE, D-76021 Karlsruhe, Germany

[3] CEA Saclay, DPC SECR LSRM, F-91191 Gif Sur Yvette, France

[4] Sci Ctr Kurchatov Inst, Moscow, Russia

来源：

RADIOCHIMICA ACTA | 2008年 / 96卷 / 9-11期

关键词：

Humics; Neptunium; Scanning transmission X-ray microscopy; Colloids;

D O I：

10.1524/ract.2008.1554

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Neptunyl sorption in the ternary system of goethite-humic acid (HA)-Np was studied in a series of batch experiments with natural leonardite HA and a hydroquinone enriched derivative. The reduction of Np(V) at low pH has been observed by XPS upon interaction with hydroquinone-enriched leonardite HA-goethite suspension. Under these low pH conditions the formation of humate coatings at the goethite mineral surface has been identified using scanning transmission X-ray microscopy (STXM) at the carbon K-edge.

引用

页码：685 / 690

页数：6

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