Author:
Przewloka S.R.,Shearer B.J.
Abstract
Summary
Preparations of the previously unreported, water-soluble, tetraguanidinium, tetracholine and tetrakisbenzyltrimethylammonium
ellagates are outlined. Ellagic acid and these water-soluble salts remove
Mg2+, Ca2+ and Mn2+ ions from dilute aqueous solutions at pH greater than 7. The salts also remove Fe2+,
Fe3+, Co2+ and Cu2+ between pH 3 and pH 6. At pH 1 the water-soluble ellagates underwent hydrolysis,
resulting in the precipitation of free ellagic acid in preference to the formation of metal-ellagate complexes.
These trends were also observed when mixtures of metal ions were applied.
Cited by
27 articles.
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