title: A ω-mercaptoundecylphosphonic acid chemically modified gold electrode for uranium determination in waters in presence of organic matter.
abstract: A chemically modified electrode (CME) on a gold surface assembled with a ω-phosphonic acid terminated thiol was investigated for its capability to complex uranyl ions. The electrode, characterized by electrochemical techniques, demonstrated to be effective for the determination of uranyl at sub-μgL(-1) level by differential pulse adsorptive stripping voltammetry (DPAdSV) in environmental waters, also in presence of humic matter and other potential chelating agents. The accuracy of the measurements was investigated employing as model probes ligands of different complexing capability (humic acids and EDTA).
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Pavia, 27100 Pavia, Italy. Electronic address: daniele.merli@unipv.it.
authors.forename: Daniele
authors.initials: D
authors.lastname: Merli
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Pavia, 27100 Pavia, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Protti
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Pavia, 27100 Pavia, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Labò
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Pavia, 27100 Pavia, Italy.
authors.forename: Maria
authors.initials: M
authors.lastname: Pesavento
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Pavia, 27100 Pavia, Italy.
authors.forename: Antonella
authors.initials: A
authors.lastname: Profumo
keywords: Chemically modified electrodes; Electrochemical sensors; Natural waters; Self assembled monolayer; Uranyl ion; ω-Mercaptoundecylphosphonic acid