A High sensitivity impedimetric biosensor using the tannin from quercusmacrolepis as biorecognition element for heavy metals detection - Archive ouverte HAL Accéder directement au contenu
Proceedings/Recueil Des Communications Année : 2015

A High sensitivity impedimetric biosensor using the tannin from quercusmacrolepis as biorecognition element for heavy metals detection

Résumé

A new poly(vinylchloride) (PVC) membrane electrode based on tannin from the bark of Quercusmacrolepis (acorn) as the ionophore was prepared and modified onto the surface of a gold electrode. The electrochemical impedance spectroscopy (EIS) technique was used to study the sensitivity of the electrode that was modified with a thin layer of polymeric biomembrane, in order to detect heavy metals ions in solution. The device shows a good sensitivity for Zn2+, Ni2+ ions and a little less for Cd2+. The electrode indicates a good linear response for the three metals over a wide concentration range from 1.0 x 10(-19) to 1.0 x 10(-4) M, with a detection limit of 1.0 x 10(-9) M.
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Dates et versions

hal-01363679 , version 1 (11-09-2016)

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Nawal Khedimallah, Ali Zazoua, Amel Sbartai, Nicole Jaffrezic-Renault. A High sensitivity impedimetric biosensor using the tannin from quercusmacrolepis as biorecognition element for heavy metals detection. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2nd Engineering Sciences for Biology and Medicine Conference (ESBM), May 2015, Tunisia. 14 (7), pp.694-699 2015, IEEE TRANSACTIONS ON NANOBIOSCIENCE ⟨10.1109/TNB.2015.2461444⟩. ⟨hal-01363679⟩
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