Comparison of dissolution and surface reactions between calcite and aragonite in L-glutamic and L-aspartic acid solutions.
We have investigated dissolution and surface reaction of calcite and aragonite in amino acid solutions of L-glutamic (L-glu) and L-aspartic acid (L-asp) at weak acidity of above pH 3. The surface reactions of calcite and aragonite were related with the dissolution. Calcite was dissolved in both solutions but the dissolution was limited by an adsorption of Ca-carboxylate salt. Aragonite was neither dissolved nor reacted in amino acid solutions because the crystal surface consisted of a hard to dissolve structure.
Ryu
Miyoung
M
Korea Institute of Geoscience and Mineral Resources, 92 Gahwangno, Yuseung-gu, Daejeon 305-350, Korea.
Kim
Hwan
H
Lim
Mihee
M
You
Kwangsuk
K
Ahn
Jiwhan
J
D019342:Acetic Acid / Q000737:chemistry; D001224:Aspartic Acid / Q000737:chemistry*; D002118:Calcium / Q000737:chemistry; D002119:Calcium Carbonate / Q000737:chemistry*; D018698:Glutamic Acid / Q000737:chemistry*; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D012995:Solubility; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013997:Time Factors; D014961:X-Ray Diffraction
D012996:Solutions; D001224:Aspartic Acid; D018698:Glutamic Acid; D002119:Calcium Carbonate; D019342:Acetic Acid; D002118:Calcium