OXIDATION OF THIOSULFATE TO SULFATE AT GLASSY-CARBON ELECTRODES

被引：24
|
作者：
FENG, JR
JOHNSON, DC
LOWERY, SN
机构：
[1] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011
[2] EASTMAN KODAK CO,CORP HLTH & ENVIRONM LABS,ENVIRONM SCI SECT,ROCHESTER,NY 14650
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1995年 / 142卷 / 08期
关键词：
D O I：
10.1149/1.2050063
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Thiosulfate (S2O32-) can be quantitatively oxidized to sulfate (SO42-) without production of elemental sulfur (S-o) by a two-step anodic process at glassy carbon electrodes in 1.0M NaOAc/1.0M HOAc buffer (pH 5). The first step, at 1.0 V vs. SCE, converts S2O32- to tetrathionate (S4O62-). The second step, at 1.6 V vs. SCE, converts S4O62- to S4O2-. Addition of bromide (Br-) to S2O32- solutions expedites the desired conversion, presumably because of homogeneous oxidations by bromine (Br-2) generated by anodic oxidation of Br-.
引用
收藏
页码：2618 / 2620
页数：3
相关论文
共 50 条
12345