高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (5): 693.

• 论文 • 上一篇    下一篇

迭代目标转换因子分析法在吸附伏安法中的应用──混合色素的同时测定

白洁玲, 倪永年   

  1. 南昌大学化学系, 南昌 330047
  • 收稿日期:1995-06-14 出版日期:1996-05-24 发布日期:1996-05-24
  • 通讯作者: 倪永年
  • 作者简介:白洁玲,女,25岁,硕士研究生.
  • 基金资助:

    国家自然科学基金;江西省自然科学基金

Adsorptive Voltammetric Determination of Mixed Pigment by Iterative Target Transformation Factor Analysis

BAI Jie-Ling, NI Yong-Nian   

  1. Department of Chemistry, Nanchang University, Nanchang 330047
  • Received:1995-06-14 Online:1996-05-24 Published:1996-05-24

PDF (PC)

被引次数

3

摘要： 将迭代目标转换因子分析法应用于混合色素溶液吸附伏安波谱的解析,完成了苋菜红、日落黄、柠檬黄和胭脂红混合色素在磷酸氢二钠-柠檬酸缓冲溶液(pH=5.7)中的吸附伏安法同时测定,取得了较满意的结果。

关键词: 吸附伏安法, 色素, 迭代目标转换因子分析

Abstract: Synthetic pigments,such as amaranth,sunset yellow,tartrazine and ponceau 4R,have sensitive adsorptive voltammograms in a phosphate buffer(pH=5.7).The voltammetric waves of these pigments,however,are seriously overlapped and it is difficult to determine them without a preseparation,In this paper,the experimental conditions were investigated.The mixture was accumulated for 240 s at a HMDEwith a accumulate potential,-100 mV.After a 10 s quiet time the potential was then scanned from -100 to -100 mVusing linear sweep voltammetry(LSV) with a scan rate,100 mV/s.The voltammetric data of mixed pigments were processed by a chemometric approach,iterative target transformation factor analysis(ITTFA)and acceptable results with a total prediction error,8.35%,were obtained.

Key words: Adsorpative voltammetry, Pigment, Iterative target transformation factor analysis

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