Non-chromatographic mercury speciation and determination in wine by new core-shell ion-imprinted sorbents

► New core-shell Hg(II) ion-imprinted sorbents were successfully synthesized. ► The Hg(II) ion-imprinted sorbents permit quantitative sorption at pH 5-7. ► P(PDC-Hg)/SiG had better selectivity toward Hg(II) over competitive ions. ► A method for Hg(II) and CH3Hg+ determination in wine samples was demonstrated.