Extraction of diazinon pesticide from water by metal oxide sorbents

The specificity of extraction of diazinon from water matrix on synthesized nanoparticles of titanium, zirconium, and iron(III) oxides were studied. Commercial powder TiO2 (P25), widely used for the metal-affinity chromatography method, was selected as the fourth substance for comparison. In the same sorption conditions iron(III) oxides and TiO2 (P25) showed the lowest value of analyte extraction - 20 % and 28 %. The extraction rate of diazinon on titanium oxide particles was 77 %. The best result was shown on the zirconium oxide, the extraction rate reached 86 %. Diazinon extraction with zirconium oxide nanoparticles shown reproducible results over the entire range of selected concentrations. The efficiency of 0.015 % perfluorooctane sulfonic acid (PFOS) solution in 0.5 % aqueous piperidine as eluent was also shown.