高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (10): 1225.

• 论文 • 上一篇    下一篇

光化学-荧光分析法研究(Ⅷ)——波长扫描-反应速差分析法

郭祥群, 许金钩, 赵一兵, 陈国珍   

  1. 厦门大学化学系, 厦门, 361005
  • 收稿日期:1991-10-14 修回日期:1992-06-25 出版日期:1992-10-24 发布日期:1992-10-24
  • 通讯作者: 郭祥群
  • 基金资助:

    国家自然科学基金

Studies on Photochemical Fluorimetric Method(Ⅷ)——Wave Scanning-Differential Rate Method

GUO Xiang-Qun, XU Jin-Gou, ZHAO Yi-Bing, CHEN Guo-Zhen   

  1. Department of Chemistry, Xiamen University, Xiamen, 361005
  • Received:1991-10-14 Revised:1992-06-25 Online:1992-10-24 Published:1992-10-24

摘要: 提出了波长扫描-光化学反应速差荧光分析同时测定双组分的方法,以核黄素的光分解反应和甲萘醌的光还原反应为例考察了方法的可行性.结果表明,核黄素、甲萘醌浓度分别在(0~1.20)μg/mL和(0~2.70)μg/mL范围内呈良好的线性关系(γ为0.999和0.998).检出限分别为0.22ng/mL和2.6ng/mL(n=11).平均回收率分别为101%、99%.

关键词: 光化学反应, 荧光分析法, 核黄素, 甲萘醌, 速差分析法

Abstract: The present paper deals with a differential rate kinetic photochemical fluorimetric technique,wave scanning-differential rate method,for simultaneous determination of two compounds.The principle for this method as well as the experimental technique by which the in situ photochemical fluorimetry is able to carry out by use of commercial fluorescence spectropho-tometer is described.A wave scanning-differential rate method for the simultaneous determination of riboflavin and menadione based on their photochemical reaction,used as an example of this technique,is proposed,The calibration graph was rectilinear from 0.0 ng/mLto 1.20μg/mLfor riboflavin (r=0.999) and from 0.0 ng/mL to 2.70 /ng/mL for menadione (r=0.998).The limits of detection were 0.22 ng/mL riboflavin and 2.6 ng/mLmenadione.The average recoveries were 101% and 99%,respectively.The standard deviations were 2.5% for riboflavin and 2.8% for menadione

Key words: Photochemical reaction, Fluorimetry, Riboflavin, Menadione, Differential rate method

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