Original research articles

Evaluation of contaminant elements in Portuguese wines and original musts by high intensity focused ultrasound combined with inductively coupled plasma mass spectrometry

Abstract

Portuguese musts and wines from several varieties and different vineyards were studied to evaluate their contents in contaminant elements, in two winemaking steps. HIFU (High Intensity Focused Ultrasound) combined with ICP-MS (Inductively Coupled Plasma Mass Spectrometry) was the methodology used. The variation from must to wines was a function of the element and its concentration. Be, Al, Mn, Co, Ni, Cu, Ga, Rb, Cd, In, Ba, Tl and U concentration in wines was lower than in musts. Cu depletion achieved 99% of the initial value. For Li, Fe, Zn, Sr, Cs, Pb and Bi, white and red samples presented different trends, suggesting the importance winemaking process. The levels of Cu, Zn, As, Cd and Pb were lower than the acceptable maximal limits established by the International Organisation of Vine and Wine and in general could be considered relatively low values.

Authors


Sofía Catarino

Affiliation : Instituto Nacional de Investigação Agrária e Veterinária (INIAV), I.P. / Unidade Estratégica de Investigação e Serviços de Tecnologia e Segurança Alimentar / Unidade de Investigação de Viticultura e Enologia, 2565-191 Dois Portos, Portugal; UIQA - Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal

sofia.catarino@iniav.pt

José-Luis Capelo

Affiliation : REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Monte de Caparica, Portugal


António Sérgio Curvelo-García

Affiliation : Instituto Nacional de Investigação Agrária e Veterinária (INIAV), I.P. / Unidade Estratégica de Investigação e Serviços de Tecnologia e Segurança Alimentar / Unidade de Investigação de Viticultura e Enologia, 2565-191 Dois Portos, Portugal


Raúl Bruno de Sousa

Affiliation : UIQA - Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal

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