“…2-APSH is an aroylhydrazone studied in previous works. They were regarded to spectral and metallochromic properties of 2-APSH as well as electrochemical properties by direct current polarography (DCP), differential pulse polarography (DPP) and alternating current polarography (ACP), showing interesting properties as complexing agent of metal ions [17]. The influence of variables on the peak current was studied by using exploratory (Plackett-Burman) and sequential (Simplex) experimental designs to detect significant variables and to obtain optimal conditions, respectively.…”