食品科学 ›› 2004, Vol. 25 ›› Issue (4): 134-136.

• 分析检测 • 上一篇    下一篇

紫苏叶中痕量锰的催化动力学光度法测定

 刘洪, 段友构   

  1. 湖南吉首大学化学化工学院
  • 出版日期:2004-04-15 发布日期:2011-10-24

Determination of Trace MnⅡ in the Perilla Frutescensc(L.) Britt by Catalytic Kinetic Spectrophotometry

 LIU  Hong, DUAN  You-Gou   

  1. College of Chemistry and Chemical Engineering, Jishou University
  • Online:2004-04-15 Published:2011-10-24

摘要: 本文采用催化动力学光度法对紫苏叶中的痕量锰进行测定。该方法检测极限为5.4×10-5μg/ml,线性范围为1.0~10.0μgMn(Ⅱ)/ml,其回收率在97.8%~104.5%之间,相对标准偏差小于2.6%。平行测定结果表明,该法具有较好的准确度和精密度,样品分析结果满意。

关键词: 催化动力学光度法, 锰, 紫苏

Abstract: In the paper the catalytic kinetic spectrophotometry was used to determining trace Mn(Ⅱ) in the Perilla Frutescens(L.) Britt. The limit of detection for Mn(Ⅱ) was 5.4×10-5μg/ml and the linear range of determination was 1.0 to 10.0μg Mn(Ⅱ)/ml. The recoveries tested by the standard addition method were in the range of 97.8% to 104.5%, RSD, smaller than 2.6%(n=9).Satisfactory results were obtained in its application to the determination of Mn(Ⅱ) in the Perilla Frutescens(L.) Britt.

Key words: catalytic kinetic spectrophotometry, manganese, Perilla frutescens(L.) Britt