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Current and historical concentrations of poly and perfluorinated compounds in sediments of the northern Great Lakes - Superior, Huron, and Michigan

G. Codling, S. Hosseini, MB. Corcoran, S. Bonina, T. Lin, A. Li, NC. Sturchio, KJ. Rockne, K. Ji, H. Peng, JP. Giesy,

. 2018 ; 236 (-) : 373-381.

Jazyk angličtina Země Anglie, Velká Británie

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc18024365

Current and historical concentrations of 22 poly- and perfluorinated compounds (PFASs) in sediment collected from Lake Superior and northern Lake Michigan in 2011 and Lake Huron in 2012 are reported. The sampling was performed in two ways, Ponar grabs of surface sediments for current spatial distribution across the lake and dated cores for multi-decadal temporal trends. Mean concentrations of the sum of PFASs (∑PFASs) were 1.5, 4.6 and 3.1 ng g-1 dry mas (dm) in surface sediments for Lakes Superior, Michigan and Huron, respectively. Of the five Laurentian Lakes, the watersheds of Superior and Huron are the less densely populated by humans, and concentrations observed were typically less and from more diffuse sources, due to lesser urbanization and industrialization. However, some regions of greater concentrations were observed and might indicate more local, point sources. In core samples concentrations ranged from 7 that include perfluoro-n-octane sulfonate (PFOS) bind more strongly to sediment, which resulted in more accurate analyses of temporal trends. Shorter-chain PFASs, such as perfluoro-n-butanoic acid which is the primary replacement for C8 PFASs that have been phased out, are more soluble and were identified in some core layers at depths corresponding to pre-production periods. Thus, analyses of temporal trends of these more soluble compounds in cores of sediments were less accurate. Total elemental fluorine (TF) and extractable organic fluorine (EOF) indicated that identified PFASs were not a significant fraction of fluorine containing compounds in sediment (<0.01% in EOF).

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$a Codling, Garry $u Toxicology Centre, University of Saskatchewan, Saskatoon, SK, S7N 5B3, Canada; Research Centre for Contaminants in the Environment, Pavilion 29 Masaryk University, Brno, Czech Republic. Electronic address: garrycodling@yahoo.co.uk.
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$a Current and historical concentrations of poly and perfluorinated compounds in sediments of the northern Great Lakes - Superior, Huron, and Michigan / $c G. Codling, S. Hosseini, MB. Corcoran, S. Bonina, T. Lin, A. Li, NC. Sturchio, KJ. Rockne, K. Ji, H. Peng, JP. Giesy,
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$a Current and historical concentrations of 22 poly- and perfluorinated compounds (PFASs) in sediment collected from Lake Superior and northern Lake Michigan in 2011 and Lake Huron in 2012 are reported. The sampling was performed in two ways, Ponar grabs of surface sediments for current spatial distribution across the lake and dated cores for multi-decadal temporal trends. Mean concentrations of the sum of PFASs (∑PFASs) were 1.5, 4.6 and 3.1 ng g-1 dry mas (dm) in surface sediments for Lakes Superior, Michigan and Huron, respectively. Of the five Laurentian Lakes, the watersheds of Superior and Huron are the less densely populated by humans, and concentrations observed were typically less and from more diffuse sources, due to lesser urbanization and industrialization. However, some regions of greater concentrations were observed and might indicate more local, point sources. In core samples concentrations ranged from <LOQ to 46.6 ng g-1 dm among the three lakes with concentrations typically increasing with time. Distributions of PFASs within dated cores largely corresponded with increase in use of PFASs, but with physiochemical characteristics also affecting distribution. Perfluoroalkyl sulfonates (PFSAs) with chain lengths >7 that include perfluoro-n-octane sulfonate (PFOS) bind more strongly to sediment, which resulted in more accurate analyses of temporal trends. Shorter-chain PFASs, such as perfluoro-n-butanoic acid which is the primary replacement for C8 PFASs that have been phased out, are more soluble and were identified in some core layers at depths corresponding to pre-production periods. Thus, analyses of temporal trends of these more soluble compounds in cores of sediments were less accurate. Total elemental fluorine (TF) and extractable organic fluorine (EOF) indicated that identified PFASs were not a significant fraction of fluorine containing compounds in sediment (<0.01% in EOF).
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$a Hosseini, Soheil $u Department of Civil and Materials Engineering (MC 246), University of Illinois at Chicago 842 West Taylor Street, Chicago, IL 60607-7023, USA.
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$a Corcoran, Margaret B $u Department of Earth and Environmental Sciences (MC 186), University of Illinois at Chicago 845 W. Taylor Street, Chicago, IL 60607, USA.
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$a Bonina, Solidea $u Department of Civil and Materials Engineering (MC 246), University of Illinois at Chicago 842 West Taylor Street, Chicago, IL 60607-7023, USA.
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$a Lin, Tian $u Environmental and Occupational Health Sciences, School of Public Health, University of Illinois at Chicago, 2121 West Taylor St., Chicago, IL 60612, USA; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, China.
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$a Li, An $u Environmental and Occupational Health Sciences, School of Public Health, University of Illinois at Chicago, 2121 West Taylor St., Chicago, IL 60612, USA.
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$a Sturchio, Neil C $u Department of Earth and Environmental Sciences (MC 186), University of Illinois at Chicago 845 W. Taylor Street, Chicago, IL 60607, USA.
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$a Rockne, Karl J $u Department of Civil and Materials Engineering (MC 246), University of Illinois at Chicago 842 West Taylor Street, Chicago, IL 60607-7023, USA.
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$a Ji, Kyunghee $u Toxicology Centre, University of Saskatchewan, Saskatoon, SK, S7N 5B3, Canada.
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$a Peng, Hui $u Toxicology Centre, University of Saskatchewan, Saskatoon, SK, S7N 5B3, Canada.
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$a Giesy, John P $u Toxicology Centre, University of Saskatchewan, Saskatoon, SK, S7N 5B3, Canada; Dept. Veterinary Biomedical Sciences, University of Saskatchewan, 44 Campus Drive, Saskatoon SK S7N 5B3, Canada; Department of Biology & Chemistry and State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, SAR, China; Department of Zoology, and Center for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA; School of Biological Sciences, University of Hong Kong, Hong Kong, SAR, China.
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