Modifi ed screen-printed potentiometric sensors sensitive to cephalosporin antibiotics – cefuroxime (Cefur), cefotaxime (Ceftx), cefazolin (Cef) have been developed. Tetradecylammonium associates with complex compounds silver (I) – cefuroxime (cefotaxime) have been used as electroactive components. The role of magnetic nanoparticles Fe3O4 and cetylpyridinium chloride in improving the electroanalytical properties of sensors in solutions of the studied antibiotics is shown. Optimal ratios of modifi ers in carbon-containing inks (Fe3O4 : CPCh = 1 : 2.5) have been found.
