INQUISAL 20936
INSTITUTO DE QUIMICA DE SAN LUIS "DR. ROBERTO ANTONIO OLSINA"
Unidad Ejecutora - UE
artículos
Título:
ON-LINE MICELLAR ENHANCED SPECTROFLUORIMETRIC DETERMINATION OF RHODAMINE DYE IN COSMETICS
Autor/es:
WANG, CHIEN CHUN; MASI, ADRIANA NOEMÍ; FERNÁNDEZ, LILIANA PATRICIA
Revista:
TALANTA
Editorial:
Elsevier
Referencias:
Año: 2008 vol. 75 p. 135 - 140
ISSN:
0039-9140
Resumen:
A simple FI-fluorimetric analytical methodology for the continuous and sequential determination of rhodamine B (RhB) in cosmetic products has been developed and evaluated in terms of sensibility and selectivity. The influence of several surfactant solutions on RhB fluorescence signal has been studied; particular attention was paid in the aggregation behavior of RhB-SDS system. Linear response has been obtained in the range of 1.6 10-9 and 1 10-6 mol L-1, with a detection limit of 5 10-10 mol L-1. The novel technique provides a simple dissolution of sample, on line filtration with sampling rate higher than 100 samples/hour and has been satisfactory applied to the RhB determination in commercial lipsticks.
