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Tags
HERO ID
4241051
Reference Type
Journal Article
Title
Spatial and temporal trends in poly- and per-fluorinated compounds in the Laurentian Great Lakes Erie, Ontario and St. Clair
Author(s)
Codling, G; Sturchio, NC; Rockne, KJ; Li, A; Peng, H; Tse, TJ; Jones, PD; Giesy, JP
Year
2018
Is Peer Reviewed?
Yes
Journal
Environmental Pollution
ISSN:
0269-7491
EISSN:
1873-6424
Publisher
Elsevier Ltd
Volume
237
Page Numbers
396-405
Language
English
PMID
29502002
DOI
10.1016/j.envpol.2018.02.013
Web of Science Id
WOS:000431158900040
Abstract
The temporal and spatial trends in sediment of 22 poly- and perfluorinated (PFAS) compounds were investigated in the southern Great Lakes Erie and Ontario as well as Lake St. Clair. Surface concentrations measured by Ponar grab samples indicated a trend for greater concentrations near to urban sites. Mean concentrations ∑22PFAS were 15.6, 18.2 and 19 ng g-1dm for Lakes St. Clair, Erie and Ontario, respectively. Perfluoro-n-butanoic acid (PFBA) and Perfluoro-n-hexanoic acid (PFHxA) were frequently determined in surface sediment and upper core samples indicating a shift in use patterns. Where PFBA was identified it was at relatively great concentrations typically >10 ng g-1dm. However as PFBA and PFHxA are less likely to bind to sediment they may be indicative of pore water concentrations Sedimentation rates between Lake Erie and Lake Ontario differ greatly with greater rates observed in Lake Erie. In Lake Ontario, in general concentrations of PFAS observed in core samples closely follow the increase in use along with an observable change due to regulation implementation in the 1970s for water protection. However some of the more water soluble PFAS were observed in deeper core layers than the time of production could account for, indicating potential diffusion within the sediment. Given the greater sedimentation rates in Lake Erie, it was hoped to observe in greater resolution changes since the mid-1990s. However, though some decrease was observed at some locations the results are not clear. Many cores in Lake Erie had clearly observable gas voids, indicative of gas ebullition activity due to biogenic production, there were also observable mussel beds that could indicate mixing by bioturbation of core layers.
Keywords
sediment; PFAS; Great lakes; historical
Tags
•
PCBs
Not prioritized for screening
Litsearches
Litsearch: Aug 2018 - Aug 2019
WoS
Not prioritized for screening
PFAS
•
Additional PFAS (formerly XAgency)
•
PFAS 150
Literature Search Update December 2020
PubMed
Literature Search August 2019
PubMed
Not prioritized for screening
Perfluorobutanoic acid
Perfluorohexanoic acid
•
PFBA
Literature Search Update 5/2019
PubMed
WOS
Scopus: April 2021
•
PFHxA
LitSearch Update: Feb 2018 - May 2019
PubMed
ToxNet
WoS
Literature Search
Pubmed
Toxnet
WOS
Scopus: April 2021
HAWC
•
PFNA
Litsearch Update 2017-2018
PFAS Untag
Pubmed
Literature Search
Pubmed
Toxline
PFNA May 2019 Update
Toxnet
Title and Abstract Screening
Excluded
Not relevant to PECO
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