Journal
MOLECULES
Volume 26, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/molecules26071933
Keywords
Fe-EDDHA; Fe-EDDHSA; micronutrient fertilizer; stability; degree of ions complexation
Funding
- Ministry of Science and Higher Education of Poland [8201003902K24W03D05]
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The study examined the changes in micronutrient ions and Fe-EDDHA and Fe-EDDHSA chelates in an aqueous medium at different pH values, analyzing the ions content and chelate forms to determine the effect of pH on the stability of iron chelates over time.
In application conditions, the influence of environmental parameters on used fertilizer chelates and their distribution over time is important. For this purpose, the changes in the content of micronutrient ions and Fe-EDDHA and Fe-EDDHSA chelates in an aqueous medium at different pH values were studied. In the assumed time, changes in the ions content were analyzed using the voltammetry method at pH 3, 5 and 7. The content of isomers and chelate forms was analyzed by ion pair chromatography at pH 3, 5 and 7. These studies allowed us to determine the effect of pH on the stability of iron chelates over time.
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