Abstract
AbstractIt is shown analytically that when a sulphur-sensitized emulsion is exposed, silver sulphide is destroyed by the halogen produced during the exposure. The amount destroyed is dependent upon the time of exposure. If, however, other halogen acceptors are present during the exposure, they will preferentially accept the halogen. As these halogen acceptors have no effect on the sensitivity of either the sensitized or the unsensitized emulsion, it is concluded that the analytical evidence is not compatible with theories of sulphur sensitization in which the primary function of the silver sulphide is considered to be one of halogen acceptance.
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