Kazimirova Ksenia Olegovna RussiaSaratovSSU. Institute of Chemistry., 410012, Saratov, Astrakhanskaya str., 83, building. 1, Institute of Chemistry, SSUkazimirova-ks@mail.ru Author's articles Sorption-fluorimetric Determination of Enrofloxacin with Magnetite Nanoparticles Modified by Polyethylenimine Preconcentration of Е110 and Е124 Food Azodyes on Magnetite Nanoparticles Modified by CTAB Synthesis and Functionalization of Magnetite Мagnetic Nanoparticles with Сhitosan