Solid-contact ion-selective electrodes with highly selective thioamide derivatives of p-tert-butylcalix[4]arene for the determination of lead(II) in environmental samples

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Marcin Guziński, Grzegorz Lisak, Tomasz Sokalski, Johan Bobacka, Ari Ivaska, Maria Bocheńska, Andrzej Lewenstam
Förläggare: AMER CHEMICAL SOC
Publiceringsår: 2013
Tidskrift: Analytical Chemistry
Tidskriftsakronym: ANAL CHEM
Volym: 85
Nummer: 3
Artikelns första sida, sidnummer: 1555
Artikelns sista sida, sidnummer: 1561
Antal sidor: 7
ISSN: 0003-2700
eISSN: 1520-6882


Abstrakt

Thioamide derivatives of p-tert-butylcalix[4]arene were used as ionophores in the development of solid-contact ion-selective electrodes based on conducting polymer poly(3,4-ethylenedioxythiophene)/polystyrene sulfonate (PEDOT/PSS) which was synthesized by electrodeposition on the glassy carbon electrodes. The typical ion-selective membranes with optionally two different plasticizers [bis(2-ethylhexyl)sebacate (DOS) and 2-nitrophenyl octyl ether (NPOE)] were investigated. The potentiometric selectivity coefficients were determined by separate solution method (SSM) for Pb2+ over Cu2+, Cd2+, Ca2+, Na+, and K+. High selectivity toward Pb2+ was obtained. By applying two conditioning protocols, a low detection limit log(a(DL)) approximate to -9 was achieved. The fabricated ion-selective electrodes were used to determine Pb2+ concentration in environmental samples. The obtained results were compared to analysis done by inductively coupled plasma mass spectrometry (ICPMS).

Senast uppdaterad 2019-12-12 vid 03:36