Ionic liquid-supported magnetite nanoparticles as electrode modifier materials for estrogens sensing.

ABSTRACT: This paper reports the application of a carbon paste electrode modified with magnetite nanoparticles and the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate in the electroanalytical determination of 17β-estradiol and estriol. These estrogens are potential endocrine disruptors and thus it is relevant the development of devices for their monitoring. Transmission electron microscopy, scanning electron microscopy and zeta potential techniques were applied to characterization of the modifier materials. In cyclic voltammetry experiments, irreversible oxidation peaks were observed for 17β-estradiol and estriol at +0.320 V and +0.400 V, respectively. The anodic currents obtained were approximately three times greater than those provided by the unmodified electrode due to the presence

SUBMITTER: Moreira F 

PROVIDER: S-EPMC7005039 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature