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dc.contributor.authorMcLaren, Ronald G.en
dc.contributor.authorBackes, C. A.en
dc.contributor.authorRate, A. W.en
dc.contributor.authorSwift, R. S.en
dc.date.accessioned2008-04-18T02:37:51Z
dc.date.issued1998en
dc.identifier.citationMcLaren, R. G., Backes, C. A.., Rate, A. W., & Swift, R. S. (1998). Cadmium and cobalt desorption kinetics from soil clays: Effect of sorption period. Soil Science Society of America Journal, 62(2), 332-337.en
dc.identifier.issn0361-5995en
dc.identifier.urihttps://hdl.handle.net/10182/439
dc.description.abstractSoil solution metal concentrations and hence metal bioavailability are controlled by sorption-desorption reactions at the surfaces of soil colloids. Compared with the numerous studies on sorption of metals by soils, there are relatively few that examine desorption, and even fewer that have measured desorption kinetics. The objective of this study was, using techniques and models developed previously for studies with synthetic oxides, to examine the effect of sorption period on the subsequent desorption kinetics of Cd and Co from two natural soil clay fractions. Cobalt was less readily desorbed from the clay fractions than Cd, but with both metals and clay fractions, increases in sorption period were accompanied by substantial decreases in the proportions of sorbed metal desorbed. As with the oxides studied previously, desorption kinetics for Cd and Co sorbed onto clay fractions were found to be described well by both a two-site first-order model and a model involving a lognormal distribution of first-order rate constants. Reaction half-lives derived from the models suggested a movement of Cd and Co to slower desorption reactions with increasing sorption period. However, some caution should be used in interpreting such parameters.en
dc.format.extent332-337en
dc.language.isoenen
dc.publisherSoil Science Society of Americaen
dc.relationThe original publication is available from - Soil Science Society of Americaen
dc.rightsCopyright © 1998 Soil Science Society of Americaen
dc.subjectsoilsen
dc.subjectclaysen
dc.subjectdesorptionen
dc.subjectcadmiumen
dc.subjectcobalten
dc.subjectAgronomy & Agricultureen
dc.titleCadmium and cobalt desorption kinetics from soil clays: effect of sorption perioden
dc.typeJournal Article
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300100 Soil and Water Sciences::300103 Soil chemistryen
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Soil and Physical Sciencesen
dc.subject.anzsrc05 Environmental Sciencesen
dc.subject.anzsrc06 Biological Sciencesen
dc.subject.anzsrc07 Agricultural and Veterinary Sciencesen
dc.relation.isPartOfSoil Science Society of America Journalen
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/SOILS
pubs.publication-statusPublisheden
pubs.volume62en


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