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In our experiments, four kinds of amino acids, such as l-Cystine (l-Cys), l-Tyrosine (l-Tyr), dl-Aspartic Acid (dl-Asp), l-Lysine (l-Lys) and the mixed systems of l-Tyr (or l-Lys)/Mg 2+ , were used as effective modifiers to mediate the crystallization of CaCO 3 . The obtained crystals were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy...
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