Abstract
Various sulphides of the type CuxZn(1−x)S (0<x<1) were characterized in terms of particle size distribution by the gravitational field-flow fractionation technique. From the variation of the number average and weight average particle diameter with various parameters, such as solution pH and ionic strength, kind of detergent and time, in combination with microelectrophoretic measurements, useful conclusions about the stability and consequently the aggregation and deposition phenomena of these sulphides were deduced. Comparison of the results obtained by gravitational field-flow fractionation with those found by laser particle size measurements confirmed the credibility of the method used.
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