title: Binding characteristics and dissociation kinetics for iron(II) complexes with seawater extractable organic matter and humic substances in a compost.
abstract: A steel-slag/compost fertilizer can be useful in supplying complex Fe(II) species to barren coastal regions. Seawater extractable organic matter (SWEOM) was examined for use as a novel chelator of Fe(II) in the compost. The dissociation kinetics for Fe(II)-SWEOM were evaluated, based on the rate of ligand-exchange with ortho-phenanthroline. The ΔH(‡) for the Fe(II)-SWEOM (19 kJ mol(-1)) was significantly smaller than the corresponding values for Fe(II) complexes with humic substances (27 kJ mol(-1)), suggesting that the Fe(II)-SWEOM is kinetically less stable.
authors.affiliation: Laboratory of Chemical Resource, Division of Sustainable Resources Engineering, Graduate School of Engineering, Hokkaido University, Sapporo, Japan.
authors.forename: Hisanori
authors.initials: H
authors.lastname: Iwai
authors.forename: Masami
authors.initials: M
authors.lastname: Fukushima
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Yamamoto