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

被引：27

作者：

Carneiro, Angelica F. ^{[1
]}

Carneiro, Candice N. ^{[1
]}

Pires, Lais de N. ^{[2
]}

Teixeira, Leonardo S. G. ^{[2
,3
]}

Azcarate, Silvana M. ^{[4
,5
,6
]}

Dias, Fabio de S. ^{[2
]}

机构：

[1] Univ Fed Do Reconcavo Bahia, Ctr Ciencias Exatas & Tecnol, Campus Univ Cruz Das Almas, BR-44380000 Cruz Das Almas, Bahia, Brazil

[2] Univ Fed Bahia, Campus Univ Ondina, Inst Quim, Dept Quim Analit, BR-40170115 Salvador, BA, Brazil

[3] Univ Fed Bahia, Campus Univ Ondina, Inst Quim, INCT Energia & Ambiente, BR-40170115 Salvador, BA, Brazil

[4] Univ Nacl La Pampa, Fac Ciencias Exactas & Nat, Av Uruguay 151,L6300CLB, Santa Rosa, La Pampa, Argentina

[5] Inst Ciencias La Tierra & Ambient La Pampa INCITA, Av Uruguay 151,L6300CLB, Santa Rosa, La Pampa, Argentina

[6] Consejo Nacl Invest Cient & Tecn CONICET, Godoy Cruz 2290,C1425FQB, Caba, Argentina

来源：

TALANTA | 2020年 / 219卷

关键词：

Edible oils; Metals; D-optimal mixture design; Extraction; Emulsion breaking; LIQUID-LIQUID MICROEXTRACTION; ULTRASOUND-ASSISTED EXTRACTION; MASS SPECTROMETRY; DOEHLERT MATRIX; TRACE-ELEMENTS; MIP-OES; ICP-AES; SAMPLES; CADMIUM; METALS;

D O I：

10.1016/j.talanta.2020.121218

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

引用

页数：8

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