Fig. 5: XPS.

XPS spectra of corrosion products on the surface of Cu and Ni coupons after the 7-d incubation in the D. vulgaris media without (I) and with (II) riboflavin: a Cu 2p, b S 2p, c Ni 2p, d S 2p.

XPS spectra of corrosion products on the surface of Cu and Ni coupons after the 7-d incubation in the D. vulgaris media without (I) and with (II) riboflavin: a Cu 2p, b S 2p, c Ni 2p, d S 2p.