Binding characteristics and dissociation kinetics for iron(II) complexes with seawater extractable organic matter and humic substances in a compost

Hisanori Iwai; Masami Fukushima; Mitsuo Yamamoto

doi:10.2116/analsci.28.819

Binding characteristics and dissociation kinetics for iron(II) complexes with seawater extractable organic matter and humic substances in a compost

Hisanori Iwai, Masami Fukushima^*, Mitsuo Yamamoto

^*Corresponding author for this work

Research output: Contribution to journal › Comment/debate › peer-review

8 Citations (Scopus)

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.

Original language	English
Pages (from-to)	819-821
Number of pages	3
Journal	Analytical Sciences
Volume	28
Issue number	8
DOIs	https://doi.org/10.2116/analsci.28.819
Publication status	Published - 2012
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry

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10.2116/analsci.28.819

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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.",

author = "Hisanori Iwai and Masami Fukushima and Mitsuo Yamamoto",

year = "2012",

doi = "10.2116/analsci.28.819",

language = "English",

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T1 - Binding characteristics and dissociation kinetics for iron(II) complexes with seawater extractable organic matter and humic substances in a compost

AU - Iwai, Hisanori

AU - Fukushima, Masami

AU - Yamamoto, Mitsuo

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

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DO - 10.2116/analsci.28.819

M3 - Comment/debate

AN - SCOPUS:84867366625

SN - 0910-6340

VL - 28

SP - 819

EP - 821

JO - Analytical Sciences

JF - Analytical Sciences

IS - 8

ER -

Binding characteristics and dissociation kinetics for iron(II) complexes with seawater extractable organic matter and humic substances in a compost

Abstract

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UN SDGs

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