TY  - JOUR
AU  - Skripnikova, Tatiana A.
AU  - Starikova, Anna A.
AU  - Shumilova, Galina I.
AU  - Ermolenko, Yuri E.
AU  - Pendin, Andrey A.
AU  - Mourzina, Youlia
TI  - Towards stabilization of the potential response of Mn(III) tetraphenylporphyrin-based solid-state electrodes with selectivity for salicylate ions
JO  - Journal of solid state electrochemistry
VL  - 21
IS  - 8
SN  - 1433-0768
CY  - Berlin
PB  - Springer
M1  - FZJ-2017-06408
SP  - 2269 - 2279
PY  - 2017
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000406177400012
DO  - DOI:10.1007/s10008-017-3575-6
UR  - https://juser.fz-juelich.de/record/837512
ER  -