Baudino, O.; Pedernera, M.; Guardia Calderon, C.; Suero, E. Short Communication. Use of 4-(5-Br-2 Pyridylazo)-1,3-Diaminobenzene (5-Br-PADAB) for the Spectrometric Determination of Cobalt in Wine. Span. j. agric. res. 2007, 5, 506-509.