Trace element determination of Argentine wines using ETAAS and USN-ICP-OES

The aluminium, cadmium, calcium, copper, iron, lead, zinc, chromium concentrations were between 17.0-18.0 μg l−1, 1.0-4.7 μg l−1, 10.0-15.0 mg l−1, 23.0-28.0 μg l−1, 480-790 μg l−1, 50-90 μg l−1, 24-130 μg l−1, and <0.2-6.25 μg l−1, respectively. The levels compare well with those reported for similar wines from some other parts of the world. A significant aspect in this paper is the samples mineralization step, which allowed the direct determination of the metals. Concerning to the Cd determination, a refluxing digestion system was used for the pretreatment of the samples.