Górski L1, Mroczkiewicz M, Pietrzak M, Malinowska E.
Anal Chim Acta. 2009 Feb 9;633(2):181-7. doi: 10.1016/j.aca.2008.12.036. Epub 2008 Dec 25.In this work, complexes of Zr(IV) and Al(III) cations with 2,7,12,17-tetra-tert-butyl-5,10,15,20-tetraazaporphine (TAP) were tested as ionophores in plasticized PVC membranes of ion-selective electrodes. It was found that both tested ionophores show enhanced affinity towards fluoride anion. High fluoride selectivity was observed in the presence of anionic or cationic additives in the membrane, which indicates that proposed compounds work according to charged or neutral carrier mechanism, depending on membrane composition and pretreatment. Read More