The absorption spectra from the PCE remedies with and without a metal sample along with the blank solution that contains metal ended up recorded at room temperature utilizing a UV-Vis spectrophotometer (Jasco product V-730, Tokyo, Japan). The spectra were calculated in the range from 200 to 800 nm. Due to https://spenceryuogy.dgbloggers.com/29752668/about-2-fa-hcl