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Speciation 98: Abstracts
Matthew D. G. Devlin
Department of Chemistry, Speciation and Analytical Research Group, Cardiff University, P.O. Box 912, Cardiff, CF1 3TB.
The poster shows the pH dependence of the chemical speciation changes for metal ligand complexes present in perspiration under the influence of aluminium from antiperspirants. The data are provided by computer simulated chemical speciation models.
The first model shows the chemical speciation of aluminium in antiperspirants and identifies the pivotal aluminium species responsible for the blocking of skin pores which achieve the antiperspirant action.
The second model shows the speciation of metal ligand complexes which are normally present in perspiration involving endogenous ligands such as amino acids.
Finally, the third set of speciation data aims to demonstrate the effects of antiperspirants upon the speciation of each metal ligand complex present in perspiration. Conversely, the influence of perspiration on the speciation of aluminium in antiperspirants could permit an improved antiperspirant effective at a wide range of pH values.
