SPECTROPHOTOMETRIC RESOLUTION OF TERNARY MIXTURES OF AMARANTH, CARMOISINE AND PONCEAU-4R BY THE DERIVATIVE RATIO SPECTRUM-ZERO CROSSING METHOD

被引：21

作者：

NEVADO, JJB

CABANILLAS, CG

SALCEDO, AMC

机构：

[1] Department of Analytical Chemistry and Food Technology, University of Castilla-La Mancha, Ciudad Real

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1994年 / 350卷 / 10-11期

关键词：

D O I：

10.1007/BF00323511

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for the simultaneous determination of Amaranth, Ponceau 4R and Carmoisine dyes in ternary mixtures is proposed, with no separation step; this is based on the simultaneous use of the first derivative of ratio spectra and measurements at zero-crossing wavelengths. The calibration graphs are linear up to 32 mg/L of Amaranth, Carmoisine and Ponceau 4R. The mean recovery is 102.1, 95.3 and 102.6%, respectively. The method was applied to several food products.

引用

页码：606 / 609

页数：4