Extraction induced by emulsion breaking for As, Se and Hg determination in crude palm oil by vapor generation-AFS

被引:22
作者
Valasques, Gisseli Souza [1 ]
Pinto dos Santos, Ana Maria [1 ]
FranCa da Silva, Daniel Levi [1 ]
da Mata Cerqueira, Uillian Mozart Ferreira [1 ,2 ]
Costa Ferreira, Sergio Luis [1 ]
Lopes dos Santos, Walter Nei [3 ]
Bezerra, Marcos Almeida [2 ]
机构
[1] Univ Fed Bahia, Inst Quim, Campus Federacao Ondina, BR-40170115 Salvador, BA, Brazil
[2] Univ Estadual Sudoeste Bahia, Dept Ciencias & Tecnol, Campus Jequie,Rua Jose Moreira Sobrinho S-N, BR-45206190 Jequie, BA, Brazil
[3] Univ Estado Bahia, Dept Ciencias Exatas & Terra, Rua Silveira Martins 2555, BR-40170290 Salvador, BA, Brazil
关键词
Crude palm oil; Extraction induced by emulsion breaking; Arsenic; Selenium; Mercury; Atomic fluorescence spectrometry; ATOMIC-ABSORPTION-SPECTROMETRY; ULTRASOUND-ASSISTED EXTRACTION; RESPONSE-SURFACE METHODOLOGY; SOLID-PHASE EXTRACTION; EDIBLE OILS; FLUORESCENCE SPECTROMETRY; VEGETABLE-OILS; LEAD; COPPER; CADMIUM;
D O I
10.1016/j.foodchem.2020.126473
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In this work is presented the development of a method for As and Se determination in crude palm oil samples by hydride generation atomic fluorescence spectrometry and Hg by cold vapor atomic fluorescence spectrometry after ultrasound-assisted emulsification and extraction induced by emulsion breaking (EIEB). The optimization of the method was carried out by multivariate designs. The developed method has presented limits of quantification (LOQ) of 0.72, 0.12, and 1.5 mu g L-1 for As, Hg, and Se, respectively. The precisions of the proposed method expressed as repeatability were 0.92, 2.2, and 3.7% RSD for 2 mu g L-1 (n = 10) of As, Hg and Se, respectively. The developed methodology was applied in palm oil samples collected in the Bahia State. Concentrations (mu g L-1) found in the samples were between < LOQ - 1.3 for As and 3.0-15 for Se. For Hg, all analyzed samples were below the limit of quantification.
引用
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页数:6
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