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

Author(s)

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]

Affiliation

^[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

• Document type: Journal article
• Source: Food Chemistry; v. 303, JAN 15 2020.
• Web of Science Citations: 6

Abstract

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)

• FAPESP's process: 18/26145-9 - Bioavailability, bioaccessibility, and speciation of nutrients and inorganic contaminants in meat and fish
• Grantee: Ana Rita de Araujo Nogueira
• Support Opportunities: Regular Research Grants