Synthesis, Quantification and Speciation of Copper (I) and Manganese (VII) in Micellar Media using the Schiff Base 2-[(E)-[3-[(E)-(2-Hydroxyphenyl) Ethylene amino] Phenyl] Iminomethyl] Phenol in Environmental Samples
Abstract:
The Schiff base ligand H2L and its Cu(I) and Mn (VII) complexes were synthesized. The yield of the ligand and the complexes were within the range of 86.5 – 89.6 %. The synthesized complexes were stable below 270 °C. The electronic spectra of the H2L, [CuIL] and [MnVIIL] complexes were 325, 470 and 570 nm, respectively with molar absorptivity’s (dm3 mol1cm-1) of 1683, 29733 and 26366 respectively. The infrared spectra of the ligand showed v(O-H) at 3442 cm-1; v(C=N) at 1612 cm-1; and v (C-O) at 1276 cm-1. Proton NMR spectra of the ligand showed chemical shifts (ppm) at 12.92; 8.82 and 7.52 – 7.398. The Carbon-13 NMR spectra revealed signals (ppm) at 164.55, 160.93 and 120.00. The Mass Spectroscopy results gave the molecular weight of H2L, [CuIL] and [MnVIIL] complexes as 339.1, 403.967 and 369.027 g/mol, respectively. Beer-Lambert’s law was obeyed in micelle media between 0.36 – 1.12 ppm. Analytical sensitivity, calibration sensitivity, limit of detection, limit of quantification and correlation coefficient (R2) were in the range 0.088 – 0.220 ppm, 0.175 - 0.308 ppm, 0.752 - 1.384 ppm, 2.507 - 4.613 ppm and 0.996 - 0.998, respectively
