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

Figure 7

Pseudopolarograms of 10 ppb copper 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 0.10 V, scan increment 0.05 mV, interval time 0.5 s, scan rate 10 mV/s, and 0.1 M acetate buffer with 0.1 M KCl (pH = 4.5).