A tin sensitizer solution has been developed which is useful with hydrophobic surfaces. Based on radiochemical tracer adsorption measurements and conventional analytical techniques, a chemical characterization of the surface was made following the sensitization and activation steps. Quantitative results relating to the surface concentrations of active components [tin (II), tin(IV), and palladium] have been established. The surface concentration ratio of tin (II) and tin (IV) was found to be about 3:1. It was also demonstrated that the tin(II) ‐palladium (II) redox reaction is of low efficiency.
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Feldstein et al. (1973) studied this question.