
Keywords: Carbon nanotubes; Coatings; Food; Graphene; Metal-organic frameworks; Nanomaterials; Nanoparticles; Sorbents; µdSPE; micro-dispersive solid-phase extraction; 17β-E2; 17β-estradiol; AAS; atomic absorption spectroscopy; AMT; 2-amino-5-mercapto-1,3,4-thia