%0 Journal Article
%A Skripnikova, Tatiana A.
%A Starikova, Anna A.
%A Shumilova, Galina I.
%A Ermolenko, Yuri E.
%A Pendin, Andrey A.
%A Mourzina, Youlia
%T Towards stabilization of the potential response of Mn(III) tetraphenylporphyrin-based solid-state electrodes with selectivity for salicylate ions
%J Journal of solid state electrochemistry
%V 21
%N 8
%@ 1433-0768
%C Berlin
%I Springer
%M FZJ-2017-06408
%P 2269 - 2279
%D 2017
%X We report a new type of solid-state electrode (type I) of a simple design with polyvinyl chloride membranes based on Mn(III) tetraphenylporphyrin and with graphite as the electronically conducting substrate. Enlargement of the membrane/graphite contact area by soaking graphite in the plasticizer with subsequent conditioning of the electrode at 30 °C allowed us to shorten the time required to achieve steady potential values of the sensors to just 3 days. These electrodes do not require a specially added RedOx system in the transducer layer. Stabilization of the EMF response of type I electrodes is compared to type II electrodes which contain a Cu0/Cu2+ RedOx couple in the transducer layer. Type I sensors are suitable for measuring the salicylate ion concentration in the clinically important concentration range down to 2.5 × 10−4 M with a sensitivity to salicylate ion of −59.0 mV decade−1 in solutions with a high constant background of chloride ions of 0.12 M at pH = 5.3, making this a promising technique for an effective design of solid-contact ion-selective electrodes with polymeric sensing membranes.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000406177400012
%R 10.1007/s10008-017-3575-6
%U https://juser.fz-juelich.de/record/837512