偏最小二乘法—分光光度法同时测定多种食用合成色素

贾燕; 张克荣; 郑波

doi:10.13406/j.cnki.cyxb.2005.02.027

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偏最小二乘法—分光光度法同时测定多种食用合成色素

更新时间：2024-01-17

- 偏最小二乘法—分光光度法同时测定多种食用合成色素
- Simultaneous determination of synthetic food colors by method of partial least squares
- 重庆医科大学学报 2005年第2期页码：260-262
- 作者机构：
  
  1. 重庆医科大学预防医学系卫生检验教研室
  2. 四川大学华西公共卫生学院卫生检验教研室
  4. ,610041
- 作者简介：
- 基金信息：
- DOI：10.13406/j.cnki.cyxb.2005.02.027
  中图分类号： TS202.3
- 纸质出版日期：2005，
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[1]贾燕,张克荣,郑波.偏最小二乘法—分光光度法同时测定多种食用合成色素[J].重庆医科大学学报,2005(02):260-262.

JIA Yan, et al. Simultaneous determination of synthetic food colors by method of partial least squares[J]. Journal of Chongqing Medical University, 2005,(2):260-262.
[1]贾燕,张克荣,郑波.偏最小二乘法—分光光度法同时测定多种食用合成色素[J].重庆医科大学学报,2005(02):260-262. DOI： 10.13406/j.cnki.cyxb.2005.02.027.

JIA Yan, et al. Simultaneous determination of synthetic food colors by method of partial least squares[J]. Journal of Chongqing Medical University, 2005,(2):260-262. DOI： 10.13406/j.cnki.cyxb.2005.02.027.

摘要

目的:探讨偏最小二乘法（PLS）分光光度法同时测定多种食用合成色素中的应用。方法:柠檬黄、日落黄、胭脂红、苋菜红的λmax分别是4 2 8±2nm、4 82±2nm、5 0 8±2nm、5 2 0±2nm

表明它们的吸收光谱严重重叠

用PLS法辅助分光光度法

不经分离

同时测定上述四组分混合体系中各组分的含量。结果:四组分混合体系中各组分的平均回收率和RSD分别为10 0 .6 %、10 0 .5 %、99.5 %、10 1.1%和1.2 8%、1.11%、1.0 1%、1.96 %。实测两种样品

均获得较好结果。结论:PLS法为不经分离直接测定的多组分体系分光光度分析提供了一种新的途径。

Abstract

Objective:To study the application of partial least squares (PLS) in spectrophotometry

and to simultaneously determine four synthetic food colors with PLS.Methods:λ max for Tartrazine

sunset yellow

ponocean 4R and amaranth were 428±2nm

482±2nm

508±2nm

520±2nm respectively

which revealed significant overlapping of simultaneous determination of mixture of four synthetic food colors by spectrophotometry

whithout any preliminary chemical separation.Results:The mean recoveries and relative standard deviation(RSD) for each sample were 100.6%

100.5%

99.5%

101.1% and 1.28%

1.11%

1.01%

1.96%

respectively.The actual results of two kinds of samples were also satisfactory.Conclusion:The patial least squares may provide a new approach to determination of the content from multi-component spectroscpic data whithout any preliminary chemical separation.

关键词

偏最小二乘法分光光度法食用合成色素

Keywords

Partial least squares(PLS)SpectrophotometrySynthetic food colors

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