Study on the Catalytical Spectrophotometric Determination of Trace Cobalt（Ⅱ） with Co（Ⅱ）-H2O2-Arsenazo M

HUANG Dian-wen; HE Xuan

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Study on the Catalytical Spectrophotometric Determination of Trace Cobalt（Ⅱ） with Co（Ⅱ）-H2O2-Arsenazo M

更新时间：2026-05-27

- Study on the Catalytical Spectrophotometric Determination of Trace Cobalt（Ⅱ） with Co（Ⅱ）-H2O2-Arsenazo M
- Vol. 23, Issue 1, Pages: 64-66(2006)
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- Published：2006
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黄典文, 何璇. Co（Ⅱ）—H2O2—偶氮胂M体系催化光度法测定痕量钴[J]. 广东工业大学学报, 2006, 23(1): 64-66.

HUANG Dian-wen, HE Xuan. Study on the Catalytical Spectrophotometric Determination of Trace Cobalt（Ⅱ） with Co（Ⅱ）-H2O2-Arsenazo M[J]. 2006, 23(1): 64-66.
黄典文, 何璇. Co（Ⅱ）—H2O2—偶氮胂M体系催化光度法测定痕量钴[J]. 广东工业大学学报, 2006, 23(1): 64-66. DOI：

HUANG Dian-wen, HE Xuan. Study on the Catalytical Spectrophotometric Determination of Trace Cobalt（Ⅱ） with Co（Ⅱ）-H2O2-Arsenazo M[J]. 2006, 23(1): 64-66. DOI：

摘要

研究了在稀H2SO4介质中

痕量钴催化过氧化氢氧化偶氮胂M褪色反应的动力学条件

建立了催化动力学光度法测定钴的新方法.方法的线性范围为0~0.08 mg/L

检测限为1.73×10-9g/L.在用于测定维生素B12中痕量钴时

结果满意.

Abstract

In the medium of dilute H2SO4

the fading reaction of Arsenazo M oxidized by H2O2

which can be catalyzed by Co（Ⅱ）

has been studied.A new method for the catalytic spectrophotometric determination of trace cobalt has been developed.The lineer range is 0～0.08 mg/L and the detection limit is 1.73×10-9 g/L.The proposed method has been used to determine trace cobalt in vilamin B12 with satisfactory results.

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references

刘利平,张强,高建萍. 2,4-二氯苯基荧光酮催化分光光度法测定痕量钴[J]. 广东微量元素科学. 2001(08)

何纯莲,任凤莲,陈蓉. 过氧化氢氧化溴邻苯三酚红催化光度法测定痕量钴[J]. 光谱实验室. 2002(05)

李晓湘,唐冬秀,宋和付. 催化光度法测定煤矸石中微量钴[J]. 理化检验(化学分册). 2002(08)

鄢国强编.工厂实用化学分析手册[M]. 机械工业出版社, 1995

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