Studies of the Adsorption of Glutamic Acid on Brushite
A. P. SOLONENKO and O. A. GOLOVANOVA
Dostoevsky Omsk State University, Pr. Mira 55A, Omsk 644077 (Russia)
anna.petrovna@bk.ru
Keywords: brushite (calcium hydrophosphate dihydrate), glutamic acid, adsorption, active centres and groups, biogenic and pathogenic crystallization, organomineral aggregates
Pages: 215–221
Abstract
Regularities of the adsorption of L-glutamic acid on brushite were studied. Brushite is a mineral component of pathogenic new growth formed at the initial stages of calculus formation. It was established that the interaction of calcium hydrophosphate dihydrate and the amino acid is described within Langmuir’s theory (r2 = 0.99). Monomolecular adsorption layer is formed as a result of coordination of protonated terminal carboxyl groups of glutamic acid with positively charged groups СаОН+ and/or СаН2РО4+ on the surface of brushite crystal.
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