Abstract:Chemical speciation of Mg(II) and Ca(II) complexes of L-histidine in the presence of water -surfactant mixtures in the concentration range 0.0 -2.5% wyv CTAB and SDS, 0.0 -5.0% vyv TX-100 maintaining an ionic strength of 0.16 mol dm À 3 at 303 K has been studied pH metrically. The active forms of the ligand are LH 3 2 þ , LH 2 þ , LH and L À . The models containing different numbers of species were refined by using the computer program, MINIQUAD75. The predominant species detected were ML 2 H 4 4 þ , ML 2 H 3 … Show more
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