Summary
Coprecipitation of Cu and Zn in insoluble phosphates of Fe and Ca from a modified Long Ashton nutrient solution was found to be highly pH dependent. In one experiment, more than 95% and 75% of the Cu and Zn respectively were removed from solution after two days at pH 6.5 while at pH 5.0 less than 30% and 20% respectively were removed. Significant desorption of both metals took place within one day after acidification.
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Uren, N.C., Edwards, L.B. Coprecipitation of copper and zinc in culture solutions. Plant Soil 81, 145–149 (1984). https://doi.org/10.1007/BF02206903
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DOI: https://doi.org/10.1007/BF02206903