Detection of Iron(III)-Binding Ligands Originating from Marine Phytoplankton Using Cathodic Stripping Voltammetry

Hiroshi HASEGAWA, Teruya MAKI, Kohnosuke ASANO, Kentaro UEDA, Kazumasa UEDA
2004 Analytical Sciences  
The sample preparation and analytical methodology are described for detecting biologically produced iron(III)-binding ligands in laboratory cultures of coastal marine phytoplankton. The iron(III)-binding ligands from the culture media were purified by passage through a column packing with a hydrophobic absorbent. The concentrations and stability constants of the ligands were determined by adsorptive cathodic stripping voltammetry with competitive ligand equilibration. The analytical results of
more » ... lytical results of the cultivated cultures suggest that eukaryotic phytoplankton would produce iron(III)-binding ligands in analogy with other microorganisms.
doi:10.2116/analsci.20.89 pmid:14753263 fatcat:gpglxh37jzfj7lgvpsulujr2g4