a b s t r a c tThis study determines for the first time Na, K, Ca, Mg, Fe, Cu, Zn, Mn, Sr, Li and Rb contents in wines from the archipelagos of Madeira and Azores (Portugal). The greater part of the mean content for the different parameters fell within the ranges described in the literature, except for sodium whose higher content may be due to the effect of marine spray. ANOVA was used to establish the metals with significant differences in mean content between the wines from both archipelagos, between table and liquor wines of Madeira, and between wines of Pico and Terceira Islands from the Azores archipelago. Principal component analysis shows differences in the wines according to the wine-making process and/or the equipment employed. Stepwise linear discriminant analysis achieves a good classification and validation of wines according to the archipelago of origin, and the island in the case of Azores wines.

This study determines the content of Na, K, Ca, Mg, Fe, Cu, Zn, Mn, Sr, Li and Rb in wines from the islands of La Gomera and Fuerteventura in the Canarian archipelago (Spain). Analyses were performed by atomic spectroscopy techniques. Na, K, Ca and Mg were determined in dilute samples and the remainder of metals in samples previously treated with nitric acid in a microwave oven. The greater part of the mean content for the different parameters fell within the ranges described in the literature, except for sodium whose higher content may be due to the effect of marine spray. ANOVA was used to establish the metals with significant differences in mean content between type of wines, between both islands, and with the remaining islands of the Canarian archipelago. Principal component analysis shows that Fuerteventura wines can be differentiated from all other wines of the Canarian archipelago.Keywords: metals; wines; multivariate analysis; Canary Islands Este estudio determina el contenido de Na, K, Ca, Mg, Fe, Cu, Zn, Mn, Sr, Li y Rb en vinos de las islas de La Gomera y Fuerteventura en el archipie´lago canario (Espan˜a). Los ana´lisis se realizaron mediante te´cnicas de espectroscopı´a ato´mica. Na, K, Ca y Mg se determinaron en muestras diluı´das y el resto de metales en muestras tratadas previamente con a´cido nı´trico en un horno de microondas. El contenido de los diferentes iones meta´licos estaba dentro de los intervalos descritos en la bibliografı´a, con la excepcio´n del sodio, cuyo mayor contenido puede atribuirse al efecto del aerosol marino. Se uso´el ANOVA para establecer los metales con diferencias significativas de contenido medio entre los tipos de vino, entre ambas islas y con el resto de las islas del archipie´lago canario. El ana´lisis de componentes principales mostro´que los vinos de Fuerteventura podı´an diferenciarse del resto de vinos del archipie´lago canario.

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