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Binding of mercuric and other heavy metal ions by microbial growth media

Binding of mercuric and other heavy metal ions by microbial growth media Ion-specific electrodes were used to study the binding of Hg2+, Pb2+, Cu2+, and Cd2+ ions to widely used bacterial growth media (Nutrient broth, trypticase soy broth, the medium of Foot and Taylor [6] and of Nelsonet al.[12]) and to media components [yeast extract, peptone, tryptone, proteose peptone, and casamino acids (acid hydrolyzed casein)]. Volatilization of Hg2+ from aqueous solutions could be prevented by any of the growth media or their components. All media bound large amounts of Hg2+, Pb2+, and Cu2+, but much less Cd2+. Of the media components, casamino acids showed the most binding activity for all metal ions; the relative affinity of other media components to different ions varied with the cation studied. In general, the Irving-Williams [8] series for cation affinity to organic ligands was followed: Hg2+>Pa2+≫ Cu2+≫ Cd2+. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Microbial Ecology Springer Journals

Binding of mercuric and other heavy metal ions by microbial growth media

Ramamoorthy, S.; Kushner, D.
Microbial Ecology , Volume 2 (2) – Jul 14, 2005
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References (24)

Publisher
Springer Journals
Copyright
Copyright © 1975 by Springer Verlag New York Inc
Subject
Life Sciences; Microbiology; Ecology; Microbial Ecology; Geoecology/Natural Processes; Nature Conservation; Water Quality/Water Pollution
ISSN
0095-3628
eISSN
1432-184X
DOI
10.1007/BF02010436
Publisher site
See Article on Publisher Site

Abstract

Ion-specific electrodes were used to study the binding of Hg2+, Pb2+, Cu2+, and Cd2+ ions to widely used bacterial growth media (Nutrient broth, trypticase soy broth, the medium of Foot and Taylor [6] and of Nelsonet al.[12]) and to media components [yeast extract, peptone, tryptone, proteose peptone, and casamino acids (acid hydrolyzed casein)]. Volatilization of Hg2+ from aqueous solutions could be prevented by any of the growth media or their components. All media bound large amounts of Hg2+, Pb2+, and Cu2+, but much less Cd2+. Of the media components, casamino acids showed the most binding activity for all metal ions; the relative affinity of other media components to different ions varied with the cation studied. In general, the Irving-Williams [8] series for cation affinity to organic ligands was followed: Hg2+>Pa2+≫ Cu2+≫ Cd2+.

Journal

Microbial Ecology – Springer Journals

Published: Jul 14, 2005

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