Abstract
The influence of valinomicin on the change of the V olta potential in the water|heptane system has been studied by means of a vibrating capacitor and a radioactive probe. The results obtained are compared with the e.m.f. of an electrochemical concentration circuit simulating a membrane. The no-additivity of the potentials of the two half-cells heptane|water, observed when a transmembrane potential arises in the presence of valinomicin, is associated with the appearance in the heptane phase of a compensation potential. Two effects have been found to exist in the system investigated. The first effect (the unipolar charging of heptane in equilibrium with the water phase in the presence of valinomicin) increases with the lowering of the temperature and at temperatures close to 0°C can reach 18 V. The second effect (additional electrization of the heptane layer containing the space charge) is recorded when a vibrating gold reference electrode is immersed into the nonaqueous phase and the amplitude of vibration exceeds a certain limit and seems to be associated with electrokinetic phenomena.
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.
