Glutathione detection at carbon paste electrode modified with ethyl 2-(4-ferrocenyl-[1,2,3]triazol-1-yl)acetate, ZnFe2O4 nanoparticles and ionic liquid: Original scientific paper. J. Electrochem. Sci. Eng. 2022;12(1):209-217. doi:10.5599/jese.1230