Optimalization of doubletone polarography - Saur, D.; Neeb, R. (Elsevier)
Through the application of coherent fundamental frequencies, the synchronization of measuring frequency and dropping frequency, which facilitate the use of phase sensitive techniques, doubletone polarography could be developed into a highly sensitive polarographic method with a high resolution in common with all derivative methods.
http://dx.doi.org/10.1016/S0022-0728(77)80080-6
Keywords: V