Effect of some amino acids on the rate of dissolution of calcite crystals in aqueous systems

摘要

The dissolution of calcite seed crystals has been investigated in the presence of some amino acids by a constant composition method in which the undersaturation and ionic strength were maintained constant. The crystal dissolution rates are markedly inhibited by the addition of amino acids. The order of the degree of inhibition is L-arginine > glycine > phenyl alanine > alanine. Application to a kinetic Langmuir-type model suggests that adsorption of the amino acids at the active dissolution sites is the cause of the reduction in the dissolution rates.