Por favor, use este identificador para citar o enlazar este ítem: https://hdl.handle.net/20.500.12008/52713

Título:

Trace element and mercury speciation analysis in yerba mate (Ilex paraguariensis)

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Autor:

Panzl, María Victoria
Miranda-Andrades, Jarol R.
Sandoval Rojano, Wendy J.
Mendes, Joseane A.
Saint'Pierre, Tatiana D.
Rodríguez-Haralambides, Alejandra
Aucelio, Ricardo Q.

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Artículo

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Palabras clave:

Yerba mate
Infusiones
Ilex paraguariensis
Polifenoles
Oligoelementos
Espectrometría de masas
Plasma acoplado inductivamente
Emisión óptica
Técnicas de vapor frio

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Año de publicación:

2025

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Resumen:

Background: Yerba mate, a popular beverage in South America, is rich in bioactive compounds and minerals. However, yerba mate leaves may contain toxic metals and environmental contaminants. This study performed multi-element analyses using ICP-MS and ICP OES and mercury speciation by GC-CV-AFS and CV–AAS to profile infusions of ten yerba mate samples consumed in Brazil and Uruguay. Materials and methods: For ICP OES and ICP-MS analyses, 500 mg infusions of samples were prepared and diluted with 10 % v/v HNO3. Ultrasonic-assisted extractions of mercurial species were made followed by distillation and dilution with water for CV-AAS. For GC-CV-AFS speciation, samples were extracted and distilled, using 200 μL aliquots for analysis. Results: The most abundant elements in the digested solid samples were K, Ca, and Mg, whereas in infusions the ranges were up to 9.18 mg g􀀀 1 for K, 0.68 mg g􀀀 1 for Ca, and 2.74 mg g􀀀 1 for Mg. Pb presented a mean concentration of 260 μg kg􀀀 1 in leaves but it was not found in infusions. Hg2+ was found from 0.67 to 0.96 μg kg􀀀 1 in leaves with one sample presenting 0.67 μg kg􀀀 1 of CH3Hg. Conclusion: K, Ca, and Mg were the most abundant elements in the yerba mate samples. Four samples showed ultra-trace concentrations of Hg2+ and one of CH3Hg.

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Elsevier

EN:

Journal of Trace Elements and Minerals, v.12, 2025. -- e100217

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Citación:

Panzl, M., Miranda-Andrades, J., Sandoval Rojano, W. y otro. "Trace element and mercury speciation analysis in yerba mate (Ilex paraguariensis)". Journal of Trace Elements and Minerals [en línea] v.12, 2025. -- e100217. 13 p.

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Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)

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Publicaciones académicas y científicas
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