RADIOTRACER METHODS FOR STUDYING SPECIATION IN NATURAL-WATERS

被引：18

作者：

BOWEN, HJM

PAGE, E

VALENTE, I

WADE, RJ

机构：

[1] Department of Chemistry, Reading University, Reading, Berks, Whiteknights

来源：

JOURNAL OF RADIOANALYTICAL CHEMISTRY | 1979年 / 48卷 / 1-2期

关键词：

D O I：

10.1007/BF02519769

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Radio-tracer experiments have shown that antimony, mercury and zinc interact to form complexes with humic and/or fulvic acids, whose molar masses can be estimated by gel chromatography. Sb(III) and (V) humates are stable in the pH range 7-11, but are largely dissociated below pH 4; humic acid does not reduce Sb(V) to Sb(III) in solution. Mercury forms a strong complex with humic+fulvic acids. Zinc forms complexes with both humic acids and glycine, and the humic acid complex has similar elution behaviour on dextran gel to a fraction from river water equilibrated with65Zn. At least one other form of zinc, in addition to Zn2+, occurs in this river. © 1979 Akadémiai Kiadó.

引用

页码：9 / 16

页数：8

共 11 条

[1] INTERACTIONS BETWEEN HUMUS AND TRACE-ELEMENTS IN FRESH-WATER [J].