Bis-substituted benzo-15-crown-5 ethers as ion carriers in potassium ion-selective electrodes |
| |
Authors: | Janusz Wasilewski Jan F. Biernat |
| |
Affiliation: | (1) Department of Biochemistry, Teacher's Training College, Zolnierska 14, 10561 Olsztyn, Poland;(2) Institute of Inorganic Chemistry and Technology and Corrosion, Technical University of Gdask, 80952 Gdask, Poland |
| |
Abstract: | Lipophilic bis-substituted ester and ether derivatives of benzo-15-crown-5 have been synthesised. The correlation between the structure and potentiometric ion-selectivity has been studied in PVC membrane ion-selective electrodes. An ion-selective potassium sensitive electrode based on 4,5-bis (biphenyloxymethyl)benzo-15-crown-5 exhibited the best electrode properties. The detection limit was logaK = -5.4; logKK,Nappot = -3.5. The effect of the lipophilicity of neutral carriers upon electrode performance has been also discussed. |
| |
Keywords: | Crown ethers substitution lipophilicity potassium selective electrodes selectivity |
本文献已被 SpringerLink 等数据库收录! |