Výsledky vyhledávání - "John G. Farmer"

Linkage between solid-phase apportionment and bioaccessible arsenic, chromium and lead in soil from Glasgow, Scotland, UK

Autor: Richard J.F. Bewley, Barbara Palumbo-Roe, John G. Farmer, Margaret C. Graham, Mark Cave, Bryne T. Ngwenya, A. Broadway, Fiona M. Fordyce, Darren J. Beriro, Joanna Wragg

Publikováno v: Wragg, J, Broadway, A, Cave, M R, Fordyce, F M, Palumbo-roe, B, Beriro, D J, Farmer, J G, Graham, M C, Ngwenya, B T & Bewley, R J F 2018, ' Linkage between solid-phase apportionment and bioaccessible arsenic, chromium and lead in soil from Glasgow, Scotland, UK ', Earth and environmental science transactions of the royal society of edinburgh, pp. 1-14 . https://doi.org/10.1017/S1755691018000762

The chemical composition of soil from the Glasgow (UK) urban area was used to identify the controls on the availability of potentially harmful elements (PHEs) in soil to humans. Total and bioaccessible concentrations of arsenic (As), chromium (Cr) an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fdcd31108d2ba24aa3afd90b2460d2b
https://doi.org/10.1017/s1755691018000762

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Development of recent chronologies and evaluation of temporal variations in Pb fluxes and sources in lake sediment and peat cores in a remote, highly radiogenic environment, Cairngorm Mountains, Scottish Highlands

Autor: Angus B. MacKenzie, Margaret C. Graham, Alexander Kirika, Kenneth Macgregor, John G. Farmer

Publikováno v: Geochimica et Cosmochimica Acta. 156:25-49

The use of stable Pb isotope analyses in conjunction with recent (210Pb and anthropogenic radionuclide) chronologies has become a well-established method for evaluating historical trends in depositional fluxes and sources of atmospherically deposited

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60ce4774949472b8738570512ed16917
https://doi.org/10.1016/j.gca.2015.02.003

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Geochemical associations and availability of cadmium (Cd) in a paddy field system, northwestern Thailand

Autor: Margaret C. Graham, Peerapat Kosolsaksakul, Ian W. Oliver, John G. Farmer

Publikováno v: Environmental Pollution. 187:153-161

The Mae Tao watershed, northwest Thailand, has become contaminated with cadmium (Cd) as a result of zinc ore extraction (Padaeng deposit) in the nearby Thanon-Thongchai mountains. Consumption of contaminated rice has led to documented human health im

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https://doi.org/10.1016/j.envpol.2014.01.006

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Processes controlling manganese distributions and associations in organic-rich freshwater aquatic systems: The example of Loch Bradan, Scotland

Autor: Alexander Kirika, John G. Farmer, Keith G. Gavin, Margaret C. Graham

Publikováno v: Science of The Total Environment. 424:239-250

Recent increases in manganese (Mn) concentrations in surface waters, including drinking water supplies, have triggered renewed interest in its geochemical behaviour in freshwater systems. This study, involving analysis of bottom sediments and ultrafi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2267d468772b1d418e85c845d51c763
https://doi.org/10.1016/j.scitotenv.2012.02.028

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Analytical and sampling constraints in 210Pb dating

Autor: Angus B. MacKenzie, John G. Farmer, S.M.L. Hardie, Lorna J. Eades, Ian D. Pulford

Publikováno v: Science of The Total Environment. 409:1298-1304

210Pb dating provides a valuable, widely used means of establishing recent chronologies for sediments and other accumulating natural deposits. The Constant Rate of Supply (CRS) model is the most versatile and widely used method for establishing 210Pb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::73eef33ef1e202bffc1095460c51dc02
https://doi.org/10.1016/j.scitotenv.2010.11.040

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Influences upon the lead isotopic composition of organic and mineral horizons in soil profiles from the National Soil Inventory of Scotland (2007-09)

Autor: Margaret C. Graham, John G. Farmer, Allan Lilly, Lorna J. Eades, Jeffrey R. Bacon

Publikováno v: Farmer, J, Graham, M, Eades, L J, Lilly, A & Bacon, J R 2016, ' Influences upon the Lead Isotopic Composition of Organic and Mineral Horizons in Soil Profiles from the National Soil Inventory of Scotland (2007-09) ', Science of the Total Environment, vol. 544, pp. 730–743 . https://doi.org/10.1016/j.scitotenv.2015.11.127

Some 644 individual soil horizons from 169 sites in Scotland were analyzed for Pb concentration and isotopic composition. There were three scenarios: (i) 36 sites where both top and bottom (i.e. lowest sampled) soil horizons were classified as organi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::963ee727b74eac4abbbb1792275d03ed
https://pubmed.ncbi.nlm.nih.gov/26674702

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Use of 206Pb/207Pb ratios to investigate the surface integrity of peat cores used to study the recent depositional history and geochemical behaviour of inorganic elements in peat bogs

Autor: C. Yafa, Angus B. MacKenzie, John G. Farmer, Margaret C. Graham, A. J. Freeman, Joanna M. Cloy

Publikováno v: Global and Planetary Change. 53:240-248

The well characterised temporal trend in the 206 Pb/ 207 Pb atom ratio of atmospheric lead deposition in Scotland during the 20th century was used to investigate the surface integrity of several cores collected by different methods from Flanders Moss

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40f92d702fce0387c2bc683d4bd56d0b
https://doi.org/10.1016/j.gloplacha.2006.03.006

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Calcium polysulfide remediation of hexavalent chromium contamination from chromite ore processing residue

Autor: David G. Lumsdon, Stephen Hillier, Edward Paterson, Richard J.F. Bewley, Peter Anderson, Margaret C. Graham, John G. Farmer

Publikováno v: Science of The Total Environment. 364:32-44

Past disposal of high-lime chromite ore processing residue (COPR) from a chemical works in S.E. Glasgow, UK, has led to continuing release of toxic and carcinogenic hexavalent chromium (Cr(VI)) to groundwaters which are highly contaminated with Cr(VI

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41a823ca7bee46d6c9f47edcd53527f3
https://doi.org/10.1016/j.scitotenv.2005.11.007

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Sequential extraction combined with isotope analysis as a tool for the investigation of lead mobilisation in soils: Application to organic-rich soils in an upland catchment in Scotland

Autor: John G. Farmer, Jeffrey R. Bacon, Margaret C. Graham, Sarah M. Dunn, S. I. Vinogradoff

Publikováno v: Environmental Pollution. 141:469-481

Sequential extraction (modified BCR procedure) combined with isotope analysis has been investigated as a tool for assessing mobilisation of lead into streams at an upland catchment in NE Scotland. The maximum lead concentrations (up to 110 mg kg −1

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https://doi.org/10.1016/j.envpol.2005.08.067

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A stable lead isotopic investigation of the use of sycamore tree rings as a historical biomonitor of environmental lead contamination

Autor: John G. Farmer, Gavin J. Patrick

Publikováno v: Science of The Total Environment. 362:278-291

The validity of the use of sycamore (Acer pseudoplatanus) tree-rings for the reconstruction of atmospheric lead pollution histories was investigated. Tree cores spanning 1892-2003 were collected from several sycamores from the eastern shore of Loch L

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https://doi.org/10.1016/j.scitotenv.2005.12.004

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