Study of interactions between relevant organic acids and aluminium in model solutions using HPLC and IC

The interactions of different organic acids such as citric, malic, oxalic, and fulvic with aluminium were studied using ion-exchange chromatography (IC) and high performance liquid chromatography (HPLC). The experiments were carried out at low pH (1.5–3.1). The results of IC experiments on the inter...

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Published inSoil and water research Vol. 10; no. 3; pp. 172 - 180
Main Authors DRÁBEK, Ondřej, KIPKOECH KIPLAGAT, Isaac, KOMÁREK, Michael, TEJNECKÝ, Václav, BORŮVKA, Luboš
Format Journal Article
LanguageEnglish
Published Prague Czech Academy of Agricultural Sciences (CAAS) 01.01.2015
Czech Academy of Agricultural Sciences
Subjects
Acids
aluminium speciation
Aluminum
Chromatography
Citric acid
fulvic acid
Fulvic acids
High performance liquid chromatography
Ion exchange
Ion-exchange chromatography
Liquid chromatography
Malate
Malic acid
Organic acids
Oxalic acid
pH effects
Speciation
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Summary:The interactions of different organic acids such as citric, malic, oxalic, and fulvic with aluminium were studied using ion-exchange chromatography (IC) and high performance liquid chromatography (HPLC). The experiments were carried out at low pH (1.5–3.1). The results of IC experiments on the interaction between Al and oxalate, citrate, and malate were compared with model chemical equilibrium calculations. The strongest effect on Al speciation was observed with oxalic acid and fulvic acid. These two ligands formed more than one type of complex with Al. In contrast, there was no significant effect of malic acid on Al speciation and a rather weak effect caused by citric acid. The studies show that the formed complexes are stable even at low pH.
ISSN:1801-5395
1805-9384
DOI:10.17221/256/2014-SWR