Simultaneous spectrophotometric determination of three food dyes by using the first derivative of ratio spectra

被引：101

作者：

Nevado, JJB

Cabanillas, CG

Salcedo, AMC

机构：

[1] Department of Analytical Chemistry and Foods Technology, University of Castilla-La Mancha

来源：

TALANTA | 1995年 / 42卷 / 12期

关键词：

food dyes; first derivative spectrophotometry;

D O I：

10.1016/0039-9140(95)01695-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Ternary mixtures of colorants E-123 (Amaranth), E-124 (Ponceau 4R) and E-120 (Carminic acid) are resolved by using the first derivative ratio spectrum-zero crossing method without the need for any separation step. Calibration graphs were linear up to 64 mg l(-1) of carminic acid, 32 mg l(-1) of Amaranth and 32 mg l(-1) of Ponceau 4R. The method was applied to different commercial food products and results concordant with high performance liquid chromatography were obtained.

引用

页码：2043 / 2051

页数：9

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