Multicalibrational procedure for more reliable analyses of ions at low analyte concentrations

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Grzegorz Lisak, Ari Ivaska, Andrzej Lewenstam, Johan Bobacka
Förläggare: PERGAMON-ELSEVIER SCIENCE LTD
Publiceringsår: 2014
Tidskrift: Electrochimica Acta
Tidskriftsakronym: ELECTROCHIM ACTA
Volym: 140
Nummer: Special issue
Artikelns första sida, sidnummer: 27
Artikelns sista sida, sidnummer: 32
Antal sidor: 6
ISSN: 0013-4686
eISSN: 1873-3859


Abstrakt

Pb2+-ISEs were used to demonstrate a new multicalibrational approach which gives comprehensive information about the response of a potentiomeric sensor. The method was used to study and optimize the non-equilibrium response of sensors, such as obtained with solid-contact ISEs used in time dependent conditioning procedure with recovery of the low detection limit at lowest analyte concentrations. The developed method allows better handling of non-equilibrium conditions in quantitative determinations of analytes. The multicalibrational approach with time optimization showed to be superior when compared to fixed measurement time approach using Pb2+-ISEs at non-equilibrium in the determination of lead(II) in environmental sample.


Nyckelord

ion-selective electrodes, non-equilibrium sensors, potentiometry

Senast uppdaterad 2019-14-12 vid 03:44