AbstractThe effect of phytate on the solubility of Al3+and Pb2+has been investigatedin vitroat 37°C across the pH ranges 3–7 (Pb2+) and 2–5 (Al3+). For both ions minimum solubility was found when the initial metal ion: phytate ratio was in the range 5:1–3:1 across the whole pH range. For Al3+the solubility rose sharply either side of these ratios whereas for Pb2+solubility rose only slowly as the metal ion: phytate ratio was reduced. Hg2+was totally soluble under all conditions tested. At pH 7 Ca2+solubility was found to be at a minimum when the initial Ca : phytate ratio was 5 :1 irrespective of the initial Ca2+concent
展开▼
