Polypyrrole with graphenoxide nanocomposites as a coating sorbent based microextraction method for analysis of acrylamide

In this study, the fabrication of stainless steel mesh coated with polypyrrole nanocomposite and graphene oxide (Ppy-GO) by electropolymerization via cyclic voltammetry (CV) is presented for the first time. The surface of the stainless steel mesh was modified by the hydroxide group. Then electropolymerization of pyrrole (Py) was done on the surface of functionalized steel mesh in the medium of sodium dodecyl sulfate (SDS) as a counter ion pump in dehydrated oxalic acid. The seven main effective extraction parameters including type of extraction solvent, mesh size, sample volume, volume of extraction solvent, type of absorbent, adsorption time and extraction time, were investigated and optimized according to Taguchi’s method. The results of the experimental design show that type of extraction solvent and volume of extraction solvent have the most significant effect on the extraction process. Field-emission scanning electron microscope imaging (FESEM) and Fourier transform infrared spectroscopy (FT-IR) confirmed the characterization of the homogenous and porous surface of the sorbent. Ultimately, under the optimized conditions, the proposed method was used for extraction of acrylamide (AA) from potato chips samples and relative recoveries were obtained in the range of 92 to 100.5%. This method showed the linearity in the range of 0.5 to 70 µg mL ^− 1 with coefficient of determination 0.9974, limit of detection of 0.1 µg mL ^− 1 and limit of quantification 0.5 µg mL ^− 1 for acrylamide. Moreover, good repeatability (RSD% 2.19–3.9) was obtained. The extraction is carried out by direct immersion in the sample dispersed in water through the microextraction method followed by a gas chromatography-flame ionization detector (GC-FID), successfully.