KINETIC-STUDY OF THE ACTION OF HYDROGEN-PEROXIDE ON IODINE IN NEUTRAL OR BASIC-MEDIUM - APPLICATION TO IODINE HYDROLYSIS

被引：4
|
作者：
KESSIRABIA, M
GARDESALBERT, M
JULIEN, R
FERRADINI, C
机构：
[1] UNIV PARIS 05,CHIM PHYS LAB,CNRS,URA 400,45 RUE SAINTS PERES,F-75270 PARIS 06,FRANCE
[2] UNIV SCI & TECHNOL ALGER,INST CHIM,ALGIERS,ALGERIA
来源：
JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE | 1993年 / 90卷 / 04期
关键词：
D O I：
10.1051/jcp/1993900801
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The kinetics of the reduction of iodine by hydrogen peroxide has been studied at pH 7 and 8 using a stopped flow spectrophotometer (millisecond time scale). The influence of the initial concentrations of iodine, hydrogen peroxide and H+ ions, has been determined by measuring the initial rate of iodine decay. A value of the rate constant of the elementary step of iodine hydrolysis in the presence of OH- ions has been deduced ( (7.0 +/- 0.5)x10(7) mol-1.1.s-1). The reaction scheme of the hydrogen peroxide initiated iodine reduction and the role of iodine hydrolysis are discussed.
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页码：801 / 814
页数：14
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