Simultaneous determination of synthetic food colors by method of partial least squares / 重庆医科大学学报
Journal of Chongqing Medical University
; (12)1986.
Article
em Zh
| WPRIM
| ID: wpr-573547
Biblioteca responsável:
WPRO
ABSTRACT
Objective:To study the application of partial least squares (PLS) in spectrophotometry,and to simultaneously determine four synthetic food colors with PLS.Methods:? 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.
Texto completo:
1
Índice:
WPRIM
Idioma:
Zh
Revista:
Journal of Chongqing Medical University
Ano de publicação:
1986
Tipo de documento:
Article