info:eu-repo/semantics/article
D-optimal mixture design for the optimization of extraction induced by emulsion breaking for multielemental determination in edible vegetable oils by microwave-induced plasma optical emission spectrometry
Fecha
2020-11Registro en:
Carneiro, Angélica Fagundes; Carneiro, Candice Nóbrega; Pires, Laís de N.; Teixeira, Leonardo S. G.; Azcarate, Silvana Mariela; et al.; D-optimal mixture design for the optimization of extraction induced by emulsion breaking for multielemental determination in edible vegetable oils by microwave-induced plasma optical emission spectrometry; Elsevier Science; Talanta; 219; 121218; 11-2020; 1-8
0039-9140
CONICET Digital
CONICET
Autor
Carneiro, Angélica Fagundes
Carneiro, Candice Nóbrega
Pires, Laís de N.
Teixeira, Leonardo S. G.
Azcarate, Silvana Mariela
Dias, Fabio de Sousa
Resumen
A sample pretreatment based on an extraction process by emulsion breaking for multi-element determination in edible oils was developed. The determination of eight trace elements (Al, Ba, Cu, Cr, P, Ni, Ti, and Zn) was carried out by microwave-induced plasma optical emission spectrometry (MIP OES) after the extraction procedure. A D-optimal mixture experimental design was used to obtain the best experimental conditions for the extraction induced by emulsion breaking (EIEB). The proportion of HNO3 solution, Triton X-100 solution and sample was evaluated in a multivariate manner. The best recovery efficiency was obtained with 1.0 mL of 30% (v/v) HNO3, 1.0 mL of 30% (w/v) Triton-X 100 and 3.0 mL of the sample. The precisions, established as the relative standard deviation (RSD, %), were better than 2.5% for all analytes. The developed method was applied to the analysis of commercial vegetable oils with low limits of detection and good precision.