Solar UV Photooxidation as Pretreatment for Stripping Voltammetric Trace Metal Analysis in River Water

Figure 6

Pseudopolarograms of 10 ppb zinc in (a) Original Sample, (b) SoUV Sample, and (c) UV Sample; DPASV at HMDE, accumulation time 240 s, initial potential −1.2 V, final potential −0.70 V, scan increment 0.05 V, interval time 0.5 s, scan rate 10 mV/s, and 0.1 M acetate buffer containing 0.1 M KCl (pH = 4.6).