NDLI: Long-term fate of polycyclic aromatic hydrocarbons (PAH) in sediments from Loch Leven after closure of an aluminium smelter

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Journal of Environmental Monitoring Vol - 14 Issue - 4

Journal of Environmental Monitoring Vol - 14 Issue - 3

Journal of Environmental Monitoring Vol - 14 Issue - 2

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Long-term fate of polycyclic aromatic hydrocarbons (PAH) in sediments from Loch Leven after closure of an aluminium smelter

Content Provider	Royal Society of Chemistry (RSC)
Author	McIntosh, A. D. Fryer, R. J. Cundy, A. B. Webster, L.
Copyright Year	2012
Abstract	An aluminium smelter discharged polycyclic aromatic hydrocarbons (PAHs) into Loch Leven on the west of Scotland from 1907 until it closed in 2000, resulting in elevated PAH concentrations in the sediment. A temporal monitoring programme to investigate any recovery in sediment concentrations began in 2004, with sampling each year until 2008 and again in 2010. Cores were also collected to investigate temporal trends over a longer time scale and to estimate the sedimentation rate in the loch. The loch is divided into two basins, and PAH concentrations were significantly higher in the upper basin, closer to the smelter, than in the lower basin. The PAH distribution and concentration ratios were consistent with a pyrolytic source of PAHs, with a high proportion of heavier parent PAHs. There was no evidence of any recovery in PAH concentrations, perhaps due to the mixing and disturbances of the sediment, and the persistence of PAHs. Concentrations of all PAHs were above the Background Assessment Concentrations (BACs) in both basins. In the lower basin only the 5- and 6-ring PAHs were above the Effects Range Low (ERL) values, but in the upper basin all but naphthalene were above the ERLs. There is therefore still an unacceptable risk of chronic effects in marine species. Concentrations decreased down the cores, falling below BACs in the deepest sections. However, ERLs were exceeded as far down the core as 30 cm for some PAHs.
Starting Page	1335
Ending Page	1344
Page Count	10
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	14
Issue Number	5
Journal	Journal of Environmental Monitoring
DOI	10.1039/c2em11006g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	ERL Loch Leven Scotland Aluminium Polycyclic aromatic hydrocarbon Loch Leven (Kinross) Sediment Erythrocyte sedimentation rate Pyrolysis Naphthalene
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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