Multi-elemental determination in meat samples using multi-isotope calibration strategy by ICP-MS

Autor(es)

de Higuera, Julymar Marcano ^{[1, 2]} ; Santos da Silva, Ana Beatriz ^{[1, 2]} ; de Oliveira, Aline Fernandes ^{[1, 2]} ; de Araujo Nogueira, Ana Rita ^[1]

Afiliação do(s) autor(es)

^[1] Embrapa Pecuaria Sudeste, Rodovia Washington Luiz, Km 234, CP 339, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Chem, Grp Appl Instrumental Anal, Rodovia Washington Luiz, Km 235, Caixa Postal 676, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Food Chemistry; v. 303, JAN 15 2020.
• Citações Web of Science: 6

Resumo

The multi-isotope calibration (MICal) is a fast and accurate calibration strategy for multi-elemental determination that uses only two solutions, (1) 50% (v v(-1)) sample plus 50% (v v(-1)) analytical blank solution, and (2) 50% (v v(-1)) sample plus 50% (v v(-1)) standard solution (containing the analyzes). The calibration curves were built as a function of the intensity signals of solution 1 (y-axis) versus solution 2 (x-axis), employing the various isotopes of each monitored mass/charge. The concentration of the analyzes was calculated from the slope and the concentrations of the standards added to solution 2. The validation of the method was evaluated using standard reference materials of bovine liver and bovine muscle. The recoveries varied from 87 to 113% for MICal, which were similar to the conventional standard additions calibration procedure (83 to 120%). (AU)

• Processo FAPESP: 18/26145-9 - Biodisponibilidade, bioacessibilidade e especiação de nutrientes e contaminantes inorgânicos em carnes e pescados
• Beneficiário: Ana Rita de Araujo Nogueira
• Modalidade de apoio: Auxílio à Pesquisa - Regular