Simultaneous determination of oxygen transport characteristics of six membranes by hexagonal dissolved oxygen sensor system

In the present study, a hexagonal sensor system composed of a six port measurement device and six different cathodes with one common anode was developed for simultaneous determination of oxygen permeabilities or diffusivities of six different membranes. To minimize experimental variations caused by geometrical differences among six individual electrodes, the current output of each electrode was divided by individual correction factors determined by standardization with a typical membrane of fluorinated ethylene propylene (FEP). The hexagonal sensor system was then used to simultaneously determine the oxygen transport characteristics such as permeabilities or diffusivities of six different polypropylene membranes. The present study showed that a newly developed hexagonal dissolved oxygen sensor system can be used for simultaneous measurement of oxygen transport characteristics of six different membranes.