A STUDY OF FACTORS INFLUENCING THE MASS-TRANSFER EFFICIENCY ACROSS PASSIVE MEMBRANES IN FLOW-INJECTION SYSTEMS

The mass transfer efficiency across a passive membrane in flow injecti on systems was studied under a range of conditions, to determine the m aximum permeability obtainable through such a membrane. It was possibl e to obtain a mass transfer of 60% dialysis across the membrane. The h ighest percentage dialysis was obtained with the smallest recipient lo op using a volume smaller than that of the donor loop. The practical c onsequences of the results obtained show that with careful manipulatio n of the volumes of donor and recipient channels with time, a dialysis -flow injection system can be set up which can satisfy the needs of a specific application. Controllable dilution of analyses through passiv e membranes is possible, which expands the use of dialysis-flow inject ion systems.