Potential phytoavailability of anthropogenic cobalt in soils as measured by isotope dilution techniques Gouget, B en_US Bakkaus, E en_US Collins, Richard en_US Morel, J en_US 2021-11-25T14:02:42Z 2021-11-25T14:02:42Z 2008 en_US
dc.description.abstract Isotope dilution is a useful technique to determine the potential phytoavailability of an element in soil. This method involves equilibrating an isotope with soil and then sampling the labile metal pool by analysis of the soil solution (E value) or plants growing in the soil (L value). The work reported here was conducted to evaluate the distribution coefficient (Kd), and the potential phytoavailability (E value) of cobalt (Co) in eight soils subjected to the atmospheric deposition of anthropogenic Co. Multiple regression analyses demonstrated that the Kd of isotopically exchangeable Co in these soils was best modelled with two parameters: soil pH and organic carbon (OC) content (log Kd = 0.85(pH) + 1.1(logOC) - 5.0, R2 = 0.94, p less than or equal 0.01). Cobalt E values ranged from 1.5 to 37% of total soil Co concentrations. No evidence was obtained to suggest that Co(III), if present, was isotopically exchangeable in these soils and it was concluded that the Co E values consisted solely of Co(II). Cobalt L values, measured with Triticum aestivum L. (46 days), of two of these soils (varying in soil pH, e.g. 5.0 and 7.2) were statistically (p less than or equal 0.05) different to E values. However, when changes of bulk soil pH on Co E values were considered, the two values were statistically (p less than or equal 0.05) similar indicating that processes affecting soil pH during plant growth can alter isotopically exchangeable concentrations of Co. © 2008 Elsevier B.V. All rights reserved. en_US
dc.identifier.issn 0048-9697 en_US
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri en_US
dc.source Legacy MARC en_US
dc.subject.other Soils en_US
dc.subject.other Cobalt en_US
dc.subject.other Isotopes en_US
dc.subject.other Metals en_US
dc.subject.other Soil moisture en_US
dc.subject.other Solutions en_US
dc.subject.other Transition metals en_US
dc.title Potential phytoavailability of anthropogenic cobalt in soils as measured by isotope dilution techniques en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.relation.faculty Engineering
unsw.relation.ispartofissue 1-2 en_US
unsw.relation.ispartofjournal Science of the Total Environment en_US
unsw.relation.ispartofpagefrompageto 108-115 en_US
unsw.relation.ispartofvolume 406 en_US
unsw.relation.originalPublicationAffiliation Gouget, B en_US
unsw.relation.originalPublicationAffiliation Bakkaus, E en_US
unsw.relation.originalPublicationAffiliation Collins, Richard, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Morel, J en_US School of Civil and Environmental Engineering *
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