ANALYTICAL STUDY OF THE REDUCTION OF CHROMIUM(VI) BY D-GALACTURONIC ACID

被引：13

作者：

DEIANA, S ^{[1
]}

GESSA, C ^{[1
]}

USAI, M ^{[1
]}

PIU, P ^{[1
]}

SEEBER, R ^{[1
]}

机构：

[1] UNIV SASSARI, DIPARTMENTO CHIM, I-07100 SASSARI, ITALY

来源：

ANALYTICA CHIMICA ACTA | 1991年 / 248卷 / 01期

关键词：

SPECTROPHOTOMETRY; CHROMIUM; GALACTURONIC ACID;

D O I：

10.1016/S0003-2670(00)80899-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The reduction of chromium (VI) to chromium(III) by D-galacturonic acid takes place to a significant extent only in the presence of metal ions such as copper(II) or chromium(III) itself. These metals can form stable complexes in which the opening of the sugar ring leads to a reducing free aldehydic group. The stoichiometry of the reaction, the dependence of the yield on the nature of the metal ion and the pH of the solution and the products formed, were studied. Stoichiometries and stability constants of the complexes present in the system chromium(III)-D-galacturonic acid were evaluated.

引用

页码：301 / 305

页数：5

共 18 条

[1] BEHAVIOR OF CHROMIUM IN SOILS .2. HEXAVALENT FORMS [J].