Fig. 1. SWASV voltammograms of 1000 μg L−1 Bi(III) in pH 4.5 acetate buffer in the absence (a) and presence (b) of 30 μg L−1 Pb(II). Experiments were performed on an in situ deposited bismuth film. Deposition time, td=120 s at −1.40 V with stirring. ΔEs=2mV, f=25 Hz, ΔEsw=40mV.