Using Solid Phase Micro Extraction Method To Separate The Trace Elements From River Water Samples By Nano Graphene Oxide As A Sorbent

Abstract

Water samples obtained from rivers in Maysan province, Iraq, were used to separate and determine trace components in river water. NGO was synthesized using a modified Hummer's method and characterized using a Fourier transform infrared spectrophotometer (FT-IR), ultraviolet-visible spectrophotometer (UV-Vis), X-ray diffraction spectroscopy (XRD), Zeta potential analyzer, Transmission electronic microscopy (TEM), and field emission scanning electronic microscopy (FESEM) (FESEM). The synthesized NGO was utilized to separate the trace elements (Cr, Fe, Cu, Zn, Cd, and Pb) from river water samples at optimal circumstances using the solid phase micro extraction technique (SPME). Cr, Fe, Cu, Zn, Cd, and Pb contents in river water samples (1.771 g/mL), (0.791 g/mL), (0.44 g/mL), (1.53 g/mL), (0.498 g/mL), and (1.345 g/mL) were evaluated directly by flame atomic absorption spectroscopy.Cr, Fe, Cu, Zn, Cd, and Pb had lower average residue concentrations after SPME utilizing nano sheets of GO as a sorbent (0.38 g/mL), (0.098 g/mL), (0.079 g/mL), (0.191 g/mL), (0.021 g/mL), and (0.191 g/mL), respectively. There was a shift in conductivity values in water samples evaluated before and after the addition of nano sheets of GO, confirming the adsorption of metal ions on the nano sheets of GO.