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1. (WO2018220423) FOULING-RESISTANT PENCIL GRAPHITE ELECTRODE

Pub. No.:    WO/2018/220423    International Application No.:    PCT/IB2017/053175
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 31 01:59:59 CEST 2017
IPC: G01N 27/30
Applicants: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
Inventors: CARRARA, Sandro
STRADOLINI, Francesca
KILIC, Tugba
Title: FOULING-RESISTANT PENCIL GRAPHITE ELECTRODE
Abstract:
A Pencil Graphite Electrode (PGE) is herein disclosed. The electrode is characterized by a reduced content in graphite and an increased content in clay of the composite material composing it compared to the prior art PGEs. In particular, the PGE according to the invention is characterized by a clay/graphite ratio of at least 0.4. The PGE has a lower tendency to show a fouling effect when used in electrochemical analyses, particularly of phenolic compounds such as paracetamol and propofol present in a sample. Sensors comprising the PGE of the invention, as well as methods for using thereof, are also herein disclosed.