Abstract
AbstractWhile ion‐selective electrodes (ISEs) based on anion ionophores with guanidine groups were reported in the past, their response mechanism was poorly understood. In this study, an ionophore with one guanidine group was prepared as a model compound, and the chloride and sulfate responses of ISE membranes containing this ionophore were investigated. The electrodes exhibit Nernstian responses resulting from a neutral or charged ionophore mode when added cationic or anionic sites are used, respectively. Based on this observation, it might be expected that membranes without added ionic sites exhibit Nernstian responses according to a charged carrier mechanism. However, experimental results show an apparently ‘two–thirds Nernstian’ equilibrium response, which can be explained on the basis of the phase boundary model.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
