Determination of stability constants for alkaline-earth and alkali metal ion complexes of glycine by spectrophotometry.
The complex equilibria between alkaline-earth and alkali metal ions with glycine were studied by a spectrophotometric method. The following stability constant (concentration) values valid at 25 degrees and ionic strength 1.0M were found: K(HL) = 10(9.57), K(LiL) = 10(-1.2), K(BaL) = 10(-0.40), K(SrL) = 10(0.14), K(CaL) = 10(0.55), K(MgL) = 10(1.17).
Harju
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Department of Chemistry, Abo Akademi, SF-20500 Abo 50, Finland.