Analytical strategies for sensitive and precise determination of 87 Sr/ 86 Sr in olive oil through ion extraction, chromatographic separation, and multicollector inductively-coupled plasma mass-spectrometry.

Autor: Nasr EG; Institut des Sciences Analytiques et de Physicochimie pour l'Environnement et les Matériaux, Université de Pau et des Pays de l'Adour Pau, 64000, France; Laboratoire des matériaux utiles, Institut National de Recherche et d'Analyse Physicochimique Technopole de Sidi Thabet, Ariana, Tunisia., Epova EN; Advanced Isotopic Analysis, Hélioparc, Pau, 64000, France., Larivière D; Département de Chimie, Université Laval, QC, G1V 0A6 Québec, Canada. Electronic address: dominic.lariviere@chm.ulaval.ca., Barre J; Advanced Isotopic Analysis, Hélioparc, Pau, 64000, France., Souissi R; Laboratoire des matériaux utiles, Institut National de Recherche et d'Analyse Physicochimique Technopole de Sidi Thabet, Ariana, Tunisia., Adberrazak H; Laboratoire des matériaux utiles, Institut National de Recherche et d'Analyse Physicochimique Technopole de Sidi Thabet, Ariana, Tunisia., Donard OFX; Institut des Sciences Analytiques et de Physicochimie pour l'Environnement et les Matériaux, Université de Pau et des Pays de l'Adour Pau, 64000, France.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2024 Nov 15; Vol. 458, pp. 140247. Date of Electronic Publication: 2024 Jun 28.
DOI: 10.1016/j.foodchem.2024.140247
Abstrakt: Several food regulatory bodies regard olive oil as highly susceptible to food fraud, largely due to its substantial economic worth. Precise analytical tools are being developed to uncover these types of fraud. This study examines an innovative approach to extract strontium (Sr) from the olive oil matrix (via EDTA complexation and ion-exchange chromatography) and to determine its isotope composition by MC-ICP-MS. This technique was compared to a commonly used technique (i.e. acid extraction and extraction chromatography), and then validated. Three olive oils that are sold in France were prepared and analyzed by two methods: 1) acid extraction prior to Sr purification by Sr-spec resin and 2) complexation by EDTA prior to Sr purification by AG50W-X8. These methods were applied for the determination of the 87 Sr/ 86 Sr isotope ratio of 23 olive oils from various countries. We also demonstrated the feasibility of the method for the detection of olive oil mixtures.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: