Abstract
Negative stable silver iodide hydrosols prepared in statu nascendi were investigated by the method of sedimentation analysis. This investigation has been carried out in order to evaluate the assumption that the primary formed particles of stable, negative silver iodide hydrosols prepared in statu nascendi are monodispersed, and that the primary particles aggregate into secondary monodispersed particles by a second-order kinetic process. On the basis of experimental results, by measuring unsettled fractions, f M Σ, of AgI after centrifugation as a function of ω 2t c and ageing time t A, it is proved that the primary formed particles of sols are really monodispersed and that their aggregation into monodispersed secondary particles is a second-order kinetic process. A radiotracer technique for the determination of fractions f M Σ was used.
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