Reaction of Silver Ions with Gelatin

Paper to be presented at a symposium on “Photographic Gelatin” being organized by the Science Committee of the Royal Photographic Society on 19-22 September 1967 in Cambridge.

Abstract

Polarographic measurements show that silver is bound to gelatin at low pH (~1). The extent of this binding and the effect of oxidation of the gelatin are consistent with the involvement of methionine groups. At higher pH’s, binding by carboxyl, imidazole and ϵ-amino side chains is demonstrated. Difficulties encountered in preparing chloride-free gelatins by de-ionizing are described.

Notes

Paper to be presented at a symposium on “Photographic Gelatin” being organized by the Science Committee of the Royal Photographic Society on 19-22 September 1967 in Cambridge.