高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (1): 82.

• 研究简报 • 上一篇    下一篇

催化分光光度法测定食品中痕量锰

杨志斌, 黄岚, 郜野牧   

  1. 江西大学化学系
  • 收稿日期:1986-07-10 出版日期:1988-01-24 发布日期:1988-01-24

Catalytic Spectrophotometric Determination of Trace Manganese in Food

Yang Zhibin, Huang Lan, Gao Yemu   

  1. Department of Chemistry, Jiangxi University, Nanchang
  • Received:1986-07-10 Online:1988-01-24 Published:1988-01-24

摘要: 文献报道了锰的催化动力学分析法[1-5],但使用高碘酸钾-二甲苯兰FF体系,尚未见报道,本文的研究表明:高碘酸钾氧化二甲苯兰FF(Xylene Cyanole FF,简称XCIFF)使之褪色,有较佳的催化效应,溶液颜色由亮兰变为棕黄,同时使用邻菲罗啉作活化剂,反应灵敏度能进一步提高,方法的线性范围为1.85~11ngMn·mL-1,利用此方法测定了某些食品中的痕量锰。

Abstract: In this paper a new catalytic-spectrophotomelric method is proposed for the determination of trace amounts of manganese(Ⅱ) in food. The method is based on the manganese-catalysed oxidation of xylene cyanole FFby potassium periodate with the use of 1,10-phenanthroline as an activator. If the sample solution is warmed in a thermostat at 60℃ and pHranging from 3.8 to 4.2, the method is of the best determinable sansilivity. The working curve is linear in the range 1.85~11ng·ml-1 of manganese.

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