Publication detail

Authentication of geographic origin of marine samples using mercury speciation and PCA-SVM

Authors: Piroutková Martina | Husáková Lenka | Varrà Maria Olga | Bachtíková Tereza | Zanardi Emanuela

Year: 2025

Type of publication: ostatní - článek ve sborníku

Name of source: 14th Barrande-Vltava French-Czech Chemistry Meeting : Program & Book of Abstracts

Publisher name: Univerzita Pardubice

Place: Pardubice

Page from-to: 75

Titles:

Language	Name	Abstract	Keywords
eng	Authentication of geographic origin of marine samples using mercury speciation and PCA-SVM	Understanding regional variations in mercury species, particularly methylmercury (MeHg), is essential for ensuring seafood safety and supporting environmental monitoring. In this study, a simplified MeHg extraction protocol was combined with advanced chemometric techniques to classify marine samples by geographic origin. An optimized thermo-oxidative quantification method, refined using fractional factorial design to minimize resource consumption, was applied to determine MeHg concentrations in 50 squid specimens collected from the Mediterranean Sea and the Atlantic Ocean. Principal component analysis (PCA) revealed clear regional differences in mercury speciation profiles. A support vector machine (SVM) classifier trained on the PCA-reduced dataset successfully distinguished between Mediterranean and Atlantic samples. The classification performance demonstrates the potential of integrating trace-level mercury speciation with machine learning for origin authentication and marine pollution studies. The developed analytical workflow is robust, reproducible, and suitable for routine application in marine biomonitoring programs.	Authentication; Marine samples; Mercury speciation; PCA-SVM

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