Lead, Zinc and Copper Analyses of British Blanket Peats

Livett, Elizabeth A.; Lee, J. A.; Tallis, John

doi:10.2307/2259219

Cited by 151 publications

(88 citation statements)

References 25 publications

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“…Pb concentrations varied between 6 and 542 lg g À1 . This is comparable with three other peat sites in the south Pennines (Buxton, Featherbed Moss, Ringinglow Bog) sampled by Livett et al (1979), which had maximum concentrations of 481, 534 and 688 lg g À1 , respectively. From 1840 onwards, Pb influx gradually increases.…”

Section: Catchment Peatsupporting

confidence: 78%

The Suitability of a South Pennine (UK) Reservoir as an Archive of Recent Environmental Change

2005

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The suitability of a south Pennine (UK) reservoir as an archive of recent environmental change Yeloff, D.; Labadz, J.C.; Hunt, C.O. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Key words: Blanket peat erosion, Industrial Pb deposition, Pollen, Reservoir sediment, South Pennines AbstractThe suitability of a south Pennine reservoir as an archive of recent industrial pollution (Pb deposition) and vegetation change was assessed by comparing the sediment record of Pb and pollen with a local blanket peat profile, and the modelled regional SO 2 deposition since 1840. The pollen-based record of vegetation change from the reservoir sediments was obscured by high inputs of eroded peat from the surrounding catchment. Total fluxes of Pb from the catchment into the reservoir varied between 0.05 and 2.67 kg km À2 year À1 during a 7 year period of increased peat erosion (1976)(1977)(1978)(1979)(1980)(1981)(1982)(1983)(1984). The presence of concentration peaks in the Pb profile of the blanket peat may have been caused by changes in sulphide or redox chemistry within the peat profile. Large variations in influxes of Pb to the reservoir occurred during periods of increased peat erosion, suggesting the record of aerial pollution deposition has been obscured by terrestrial inputs. Extensive areas of blanket peat in the south Pennines have been subject to denudation, suggesting reservoirs in the region and other areas of high erosion and sediment flux are unsuitable for producing accurate records of the aerial deposition of pollen rain and Pb pollution. The ecological implications of highly variable fluxes of heavy metal contaminants from extensively eroded blanket bogs to ecosystems downstream are poorly understood.

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Section: Catchment Peatsupporting

confidence: 78%

The Suitability of a South Pennine (UK) Reservoir as an Archive of Recent Environmental Change

2005

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“…The affinity of lead to soil organic matter has been reported elsewhere (Tyler, 1978;Livett et al, 1979;KabalaPendias and Pendias, 1992). The amount of lead bound to Fe -Mn oxide ranged from 1.23 to 5.91% with an average of 3.41%.…”

Section: Leadmentioning

confidence: 58%

Chemical forms of heavy metals in soils around municipal waste dumpsites in Asaba Metropolis, Delta State, Nigeria

Osakwe

Akpoveta

Okoh

et al. 2012

Chemical Speciation & Bioavailability

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The chemical forms of copper, lead, manganese and zinc in soils around five selected municipal waste dumpsites in Asaba metropolis, Delta State, Nigeria, were studied, using the Ma and Rao six-step sequential chemical extraction procedure, with a view to providing information on the bioavailability and mobility of the metals in the soil matrix. The results showed that lead and manganese were speciated into residual fractions with averages of 60.32 and 82.24% respectively, while copper and zinc were associated with organic and Fe -Mn oxide fractions respectively with respective averages of 47.91 and 63.21%. The residual fraction also contained relatively high percentages of copper (33.18%) and zinc (20.81%). Relatively very low levels of the metals were found in the water soluble, exchangeable and carbonate fractions. The mobility factors of all the metals in all the soil profiles were generally low ranging from 1.97 to 39.99 indicating generally low availability as well as mobility. Lead and manganese associated with the residual fraction were strongly bound to soil matrix and were not bioavailable since they were occluded within the crystal lattice layer of silicates and well crystallised oxide minerals. Our results show that the metals do not pose any environmental risk or hazard. However, the soils stand the risk of being contaminated by copper and zinc since metals associated with organic and Fe -Mn oxide fractions could be bioavailable and mobilisable when the soil conditions such as pH and redox potentials change.

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“…Ernst (1996) states that higher plants, by exuding protons, acidify the rhizosphere (the volume of soil reached by the plant roots) and enhance metal availability in weakly buffered soils. Plant roots also exude organic substances which act as complexing agents for metals and may bring adsorbed metals into solution (Rao Gadde and Laitinen, 1974;Livett et al, 1979;Krishnamurti et al, 1997). Furthermore, the symbiotic association of plant roots with fungi may solubilise soil metals over a large area (Ernst, 1996).…”

Section: Miscellaneous Factorsmentioning

confidence: 99%

Factors influencing metal bioavailability in soils: preliminary investigations for the development of a critical loads approach for metals

Rieuwerts

Thornton

Farago

et al. 1998

Chemical Speciation & Bioavailability

486

232

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Lead, Zinc and Copper Analyses of British Blanket Peats

Cited by 151 publications

References 25 publications

The Suitability of a South Pennine (UK) Reservoir as an Archive of Recent Environmental Change

The Suitability of a South Pennine (UK) Reservoir as an Archive of Recent Environmental Change

Chemical forms of heavy metals in soils around municipal waste dumpsites in Asaba Metropolis, Delta State, Nigeria

Factors influencing metal bioavailability in soils: preliminary investigations for the development of a critical loads approach for metals

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