The absorption spectra in the PCE options with and without a steel sample and also the blank solution that contains steel were recorded at space temperature using a UV-Vis spectrophotometer (Jasco design V-730, Tokyo, Japan). The spectra had been calculated while in the vary from 200 to 800 nm. To https://2-fahcl02119.eedblog.com/29335675/5-essential-elements-for-2-fa-hcl