Sensitive and selective heavy metal ion, Mn2+ sensor development based on the synthesized (E)-N '-chlorobenzylidene-benzenesulfonohydrazide (CBBSH) molecules modified with nafion matrix

A set of (E)-N'-chlorobenzylidene-benzenesulfonohydrazide (CBBSH) molecules were synthesized using a condensation method from the derivatives of chlorobenzaldehyde and benzenesulfonylhydrazine in a medium yield which crystallized in EtOH. CBBSH derivatives were characterized using highly refined spectroscopic techniques such as H-1 NMR, C-13 NMR, FT-IR, FESEM, and UV-Vis. Structure of the CBBSH compounds was confirmed using a single crystal X-ray diffraction technique (SCXRDT) and applied for the potential detection of selective heavy metal ion (HMI), manganese ion (Mn2+) by using reliable electrochemical method. A small layer of CBBSH was deposited onto a smooth GCE with coating binder in order to modify a sensitive and selective Mn2+ sensor. Analytical parameters such as sensitivity, LOD, LOQ of the modified sensor (3-CBBSH/GCE) toward Mn2+ were calculated from the calibration curve (CC) as 1270.0 pA mu M-1 cm(-2) , approximate to 10.0 pM, and 335.0 mM respectively. This prospective 3-CBBSH/GCE sensor used to the selective measurement of Mn2+ in spiked real samples for example industrial effluent and various water samples (red sea, surface, and tap), and found acceptable and rational results. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.