Fe3O4-Ti3AlC2 max phase impregnated with 2-(5-Bromo-2-pyridylazo-5-(diethylamino) phenol for magnetic solid phase extraction of Cadmium, lead and cobalt from water and food samples

In this work, we report the preparation of Fe3O4-Ti3AlC2 max phase impregnated with 2-(5-Bromo-2-pyridylazo-5-(diethylamino) phenol) and its implementation for the extraction of cadmium, lead and cobalt from water and food samples. Blended Fe3O4-Ti3AlC2 max phase impregnated with 2-(5-Bromo-2-pyridylazo-5-(diethylamino) phenol) was characterized using different instrumental techniques like scanning electron microscopy (SEM), surface area analyser (SAA), energy dispersive X-rays (EDX), Fourier trans-form infrared spectroscopy (FT-IR) and X-rays diffraction (XRD) for surface morphology, surface region, elemental composition, functional group and crystallinity, respectively. Factors that impact the % recov-eries of analyte i.e pH, sample volume, vortex time, desorption condition and matrix impact were opti-mized. Analytical parameters like limit of detection (LOD) (Cd: 0.093 mu g/L, Pb: 0.297 mu g/L, Co: 0.223 mu g/L), limit of quantifications (LOQ) (Cd: 0.310 mu g/L, Pb: 0.992 mu g/L, Co: 0.744 mu g/L) preconcentra-tion factors (PF) (Cd = Pb = Co: 40), enrichment factors (EF) (Cd: 39.8, Pb: 39, Co: 40) and relative standard deviation (RSD) (Cd: 3.8, Pb: 5.98, Co: 4.0) were determined under optimized trial conditions. The pro-posed strategy was tested using certified reference materials like TMDA-64.3 natural water and tobacco leaves (INCT-OBTL-5) for trace metal analysis. The developed strategy was also applied effectively to nat-ural water samples and food samples using the standard addition method with good recovery results. (C) 2022 Elsevier B.V. All rights reserved.

Automated summary

Fe3O4-Ti3AlC2 Max phase impregnated with 2-(5-Bromo-2-pyridylazo-5-(diethylamino) phenol) was prepared and used for the extraction of cadmium, lead and cobalt from water and food samples. The impregnated material was characterized and optimized factors impacting the recovery of analytes. The proposed strategy showed good performance in certified reference materials and real samples.