Solar UV-Assisted Pretreatment of River Water Samples for the Voltammetric Monitoring of Nickel and Cobalt Ultratraces

<table>Standard addition calibration curves for Co (II) in (a) 6-hour<i> SoUV,</i> (b) 12-hour<i> SoUV Sample,</i> and (c) 6-hour<i> UV Sample</i>. Added concentrations of Co were 2, 4, and 6 ppb.</table>

Advances in Chemistry

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Figure 3

Figure 3: Solar UV-Assisted Pretreatment of River Water Samples for the Voltammetric Monitoring of Nickel and Cobalt Ultratraces 