Laser interferometric investigation of the transfer of concentration polarization between serially polarized drops in polarography Part I. Concentration gradient measurements

Abstract

A laser interferometric investigation of the concentration gradients encountered by the emerging drop in polarography is reported. The interferometer and two graphical integration methods are described. The results of the two methods are compared for the two regions of depletion, i.e. the solution trapped around the neck of the drop, between the drop and the capillary bottom, and the diffusion layer proper around the drop. Only the values near the bottom of the capillary are reported in this test. In Part II values farther away are reported, related to the drop's diffusion layer and compared with theory.