Co（Ⅱ）—H2O2—偶氮胂M体系催化光度法测定痕量钴

广东工业大学学报 ›› 2006, Vol. 23 ›› Issue (1): 64-66.

Co（Ⅱ）—H2O2—偶氮胂M体系催化光度法测定痕量钴

广东工业大学轻工化工学院；广东工业大学轻工化工学院广东广州510090；广东广州510090；

出版日期:2006-02-02 发布日期:2006-02-02

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

(Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510090,China)

Online:2006-02-02 Published:2006-02-02

摘要/Abstract

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.

关键词: 钴；过氧化氢；偶氮胂M；催化光度法；

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.

Key words: cobalt； hydrogen peroxide； Arsenazo M； catalytic spectrophotomerty；

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]. Journal of Guangdong University of Technology, 2006, 23(1): 64-66.

参考文献

[1] 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)

[2] 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)

[3] 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)

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