The intake of lead and associated metals by sheep grazing mining-contaminated floodplain pastures in mid-Wales, UK: I. Soil ingestion, soil–metal partitioning and potential availability to pasture herbage and livestock

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dc.contributor.author Smith, K. M.
dc.contributor.author Abrahams, Peter W.
dc.contributor.author Dagleish, M. P.
dc.contributor.author Steigmajer, J.
dc.date.accessioned 2010-12-20T11:50:39Z
dc.date.available 2010-12-20T11:50:39Z
dc.date.issued 2009-06-01
dc.identifier.citation Smith , K M , Abrahams , P W , Dagleish , M P & Steigmajer , J 2009 , ' The intake of lead and associated metals by sheep grazing mining-contaminated floodplain pastures in mid-Wales, UK: I. Soil ingestion, soil–metal partitioning and potential availability to pasture herbage and livestock ' Science of the Total Environment , vol 407 , no. 12 , pp. 3731-3739 . , 10.1016/j.scitotenv.2009.02.032 en
dc.identifier.issn 0048-9697
dc.identifier.other PURE: 155639
dc.identifier.other dspace: 2160/6024
dc.identifier.uri http://hdl.handle.net/2160/6024
dc.description Smith, K. M., Abrahams, P. W., Dagleish, M. P., Steigmajer, J. (2009). The intake of lead and associated metals by sheep grazing mining-contaminated floodplain pastures in mid-Wales, UK: I. Soil ingestion, soil–metal partitioning and potential availability to pasture herbage and livestock. Science of the Total Environment, 407 (12), 3731-3739. Sponsorship: Aberystwyth University en
dc.description.abstract This paper first evaluates the relative importance of the soil–plant–animal and soil–animal pathways of Zn, Cu and (especially) Pb investigated over a 15-month study period at 12 floodplain sites located within and downstream of the mineralised and historic mining area of mid-Wales, and secondly considers the implications of a sequential extraction procedure (SEP) undertaken on soils of varying particle size sampled from the study locations. Generally, very good agreement was found between the chemical partitioning of the three metals for each of the physical soil fractions subjected to the SEP. The availability of Pb to pasture vegetation, especially at the contaminated sites, is indicated with its associations with the more soluble (i.e. exchangeable and Fe/Mn oxide) soil phases, yet soil and/or plant barriers effectively restrict above-ground herbage concentrations of this metal. Consequently, with sheep ingesting soil at rates varying according to season from 0.1% to 44% or more of dry matter intake, the soil–animal pathway accounts for the majority of Pb consumption through most of the year, and at moderately and highly contaminated sites significant quantities of relatively soluble soil–Pb can be ingested at rates exceeding safety threshold limits en
dc.format.extent 9 en
dc.language.iso eng
dc.relation.ispartof Science of the Total Environment en
dc.subject Fluvial contamination en
dc.subject Lead en
dc.subject Sequential extraction procedure en
dc.subject Sheep en
dc.subject Soil ingestion en
dc.subject Wales en
dc.title The intake of lead and associated metals by sheep grazing mining-contaminated floodplain pastures in mid-Wales, UK: I. Soil ingestion, soil–metal partitioning and potential availability to pasture herbage and livestock en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1016/j.scitotenv.2009.02.032
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Other IGES Research en
dc.description.status Peer reviewed en


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