高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (4): 450.

• 论文 • 上一篇    下一篇

光化学荧光分析法研究(Ⅵ)——混合色素的光化学速差动力学荧光分析法测定

郭祥群, 许金钩, 陈国珍   

  1. 厦门大学化学系, 厦门, 361005
  • 收稿日期:1991-03-15 出版日期:1992-04-24 发布日期:1992-04-24
  • 通讯作者: 郭祥群
  • 基金资助:

    国家自然科学基金

Studies on the Photochemical Fluorimetry(Ⅵ)——Determination of Dye-Mixtures by Using Differential Rate Kinetic Photochemical Fluorimetry

GUO Xiang-qun, XU Jin-gou, CHEN Guo-zhen   

  1. Department of Chemistry, Xiamen University, Xiamen, 361005
  • Received:1991-03-15 Online:1992-04-24 Published:1992-04-24

摘要: 以光化学荧光衍生化法测定苋菜红(AM)和直接耐晒嫩黄5GL(DY)2种偶氮色素,研究了同时测定这2种色素混合物的光化学速差动力学荧光分析的原理和方法。AM和DY的浓度分别在0~220ng/mL和0~120ng/mL范围内呈良好的线性关系,相关系数皆为0.999,检出限为0.64ng/mLAM和0.045ng/mLDY。相对标准偏差分别为1.6%(n=8)和1.8%(n=7)。该法用于人工合成混合样品的测定效果良好。

关键词: 荧光分析法, 光化学反应, 速差动力学, 偶氮色素

Abstract: Photochemical fluorimetric methods for the determination of Azo-dyes, Amaranth (AM) and Direct Sun-resisting Light Yellow(DY) are described.Adifferential rate method is uesd for resolution of mixtures of these dyes.The principle of these methods are discussed.Linear calibration curves are obtained over the ranges of 0~220 ng/mLand 0~120 ng/mLfor AMand DY, respectively (r= 0.999 for both), the limits of determination are 0.64 ng/mL AMand 0.045 ng/mL DY.The relative standard deviation is 1.6%(n=8) and 1.8%(n = 7) for AMand DY, respectively, these methods have been applied to the determination of dye-mixtures with satisfactory results.

Key words: Fluorimetry, Photochemical reaction, Differential rate method, Azo-dyes

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