THE FAST FORMATION OF AN INTERMEDIATE IN THE CHROMIUM (VI) REDUCTION BY THIOLACTIC ACID - A KINETIC APPROACH BY MEANS OF THE STOPPED-FLOW TECHNIQUE

被引：0

作者：

Sabou, Dana-Maria ^{[1
]}

机构：

[1] Univ Babes Bolyai, Fac Chem & Chem Engn, RO-400028 Cluj Napoca, Romania

来源：

STUDIA UNIVERSITATIS BABES-BOLYAI CHEMIA | 2014年 / 59卷 / 04期

关键词：

kinetics; thiolactic acid; chromium(VI); redox; stopped-flow; HEXAVALENT CHROMIUM; CARCINOGEN CHROMATE; GENOTOXICITY; COMPLEXES; THIOLS; CELLS;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reaction between thiolactic acid and Cr(VI) in aqueous acidic solution at 295 K is a quite fast multi-step process, beginning with the formation of a condensation species, in an equilibrium that involves both the main reactants and H+ ions. The kinetics of this first step was studied by means of the stopped-flow and spectrophotometrical techniques. Reaction orders of one were found for both the thiolactic acid (RSH) and Cr(VI), showing a 1:1 combination ratio of the two in the intermediate. A fractional order was found in the case of the hydrogen ion, consistent with two parallel pathways: one assisted and one not assisted by H+.

引用

页码：183 / 193

页数：11

共 22 条

[21] FORMATION AND DECAY OF N,N,N',N'-TETRAETHYL-P-PHENYLENEDIAMINE RADICAL-CATION IN AQUEOUS-SOLUTION - A KINETIC-STUDY BY STOPPED-FLOW TECHNIQUE
ARAVINDAN, P
MARUTHAMUTHU, P
DHARMALINGAM, P
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 1995, 27 (02) : 109 - 122
[22] KINETIC-STUDIES OF THE COMPLEX-FORMATION OF IRON(III) WITH 4-ISOPROPYLTROPOLONE BY A HIGH-PRESSURE STOPPED-FLOW TECHNIQUE - MECHANISTIC DIFFERENCE BETWEEN THE HEXAAQUAIRON(III) ION AND THE PENTAAQUAHYDROXOIRON(III) ION IN THEIR COMPLEXATION
ISHIHARA, K
FUNAHASHI, S
TANAKA, M
INORGANIC CHEMISTRY, 1983, 22 (02) : 194 - 198

← 1 2 3 →