SPECIATION OF THE REACTION-PRODUCTS OF CR-51/VI/ WITH FORMIC-ACID

被引：7

作者：

ARCHUNDIA, C

COLLINS, CH

COLLINS, KE

机构：

[1] UNIV ESTADUAL CAMPINAS,INST QUIM,CAIXA POSTAL 6154,BR-13081 CAMPINAS,SP,BRAZIL

[2] NATL AUTONOMOUS UNIV MEXICO,INST CIENCIAS NUCL,MEXICO CITY 04510,DF,MEXICO

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS | 1990年 / 146卷 / 01期

关键词：

D O I：

10.1007/BF02199271

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The chemical behaviour of Cr/VI/ at low concentrations /10-6-10-7 mol.1-1/ in several aqueous formic acid solutions was studied using high specific activity51Cr/VI/. A simple and efficient radiochromatographic method using paired cation and anion exchange analyses was used to quantify the51Cr/VI/ remaining in solution after different time periods as well as the several51Cr/III/ species formed. The product distribution of monomeric51Cr/III/ species includes those with 0, +1, +2 and +3 charges. Very little dimeric or higher polymeric species are formed. The rate of reaction of51Cr/VI/ with formic acid depends on the acid concentration, the presence or absence of sodium chloride and wheter, or not, the samples are exposed to light. © 1990 Akadémiai Kiadó.

引用

页码：49 / 56

页数：8

共 5 条

[1]

ARCHUNDIA C, 1988, 2ND P GEN C NUCL EN, V2, P433

[2] COLUMN CHROMATOGRAPHIC SPECIATION OF CHROMIUM FOR CR(VI) AND SEVERAL SPECIES OF CR(III) [J].