TY - JOUR AU - A.M. Mersal, Gaber AU - S. El-Sheshtawy, Hamdy AU - M. Fallatah, Ahmed AU - Boukherroub, Rabah AU - A. Amin, Mohammed AU - I. Saleh, Dalia AU - M. Ibrahim, Mohamed PY - 2022/02/14 Y2 - 2024/03/28 TI - A Thiomidazolylborate based Carbon Paste Electrode for Voltametric Detection of Heavy Metals in Wastewater JF - Asian Journal of Chemistry JA - ajc VL - 34 IS - 3 SE - Articles DO - 10.14233/ajchem.2022.23580 UR - https://asianpubs.org/index.php/ajchem/article/view/34_3_22 SP - 635-643 AB - <p style="text-align: justify;">The ligand potassium hydro<em>tris</em>(N-(2,6-xylyl)-2-thioimidazolyl)borate (KTt<sup>xylyl</sup>) was utilized to construct a carbon paste modified electrode (KTt<sup>xylyl</sup>/CPE), which was studied using electrochemical impedance spectroscopy, cyclic voltammetry and square wave voltammetry (SWV). Its electrochemical response was investigated, and it demonstrated a significant improvement in the detection of both lead(II) and cadmium(II), allowing determination of lead(II) at trace concentrations. The spectroscopic evidence includes FT-IR, Raman, <sup>1</sup>H NMR and also DFT calculations using B3LYP/LANL2DZ level of theory indicate the high affinities of these ions toward the ligand forming lead(II) and cadmium complexes of the type [Tt<sup>xyly</sup>lMCl]. Negative electrostatic potential of the tri(thione) donors deriving their binding abilities toward both ions. The detection limits based on 3(SD/m) were; 0.112 μM and 0.204 μM for lead(II) and cadmium(II), respectively. The simultaneous detection of these ions in several waste water samples was examined in order to verify the modified electrode. Data from the ICP-AES instrument was compared to the results obtained.</p> ER -