UV−VISIBLE ABSORBANCE TIME-SCAN A typical reaction time-scan, similar to an initial-rate study but extending over a longer period with persulfate in excess, was started by quickly mixing equal volumes, kept at 20 ± 0.5 °C, of
UV−VISIBLE ABSORBANCE TIME-SCANA typical reaction time-scan, similar to an initial-rate study butextending over a longer period with persulfate in excess, wasstarted by quickly mixing equal volumes, kept at 20 ± 0.5 °C, of