Fate, distribution, and contrasting temporal trends of perfluoroalkyl substances (PFASs) in Lake Ontario, Canada
Myers, AL; Crozier, PW; Helm, PA; Brimacombe, C; Furdui, VI; Reiner, EJ; Burniston, D; Marvin, CH
HERO ID
2024727
Reference Type
Journal Article
Year
2012
Language
English
PMID
| HERO ID | 2024727 |
|---|---|
| In Press | No |
| Year | 2012 |
| Title | Fate, distribution, and contrasting temporal trends of perfluoroalkyl substances (PFASs) in Lake Ontario, Canada |
| Authors | Myers, AL; Crozier, PW; Helm, PA; Brimacombe, C; Furdui, VI; Reiner, EJ; Burniston, D; Marvin, CH |
| Journal | Environment International |
| Volume | 44 |
| Issue | 1 |
| Page Numbers | 92-99 |
| Abstract | Lake Ontario water and sediment collected from tributary, nearshore, and open lake sites were analyzed for perfluoroalkyl substances (PFASs), namely perfluoroalkyl carboxylic acids (PFCAs, F(CF(2))(n)CO(2)(-); n=6-11,13) and perfluoroalkane sulfonic acids (PFSAs, F(CF(2))(n)SO(3)(-); n=6,8,10). Survey results of surface sediment and water indicated that shorter chained PFASs were predominant in and near urban/industrial area watersheds, while longer chained PFASs were predominant in fine-grained sediment from major depositional basins. Niagara River suspended solids (1981-2006) demonstrated temporal trends that may have been influenced by recent changes in North American production and use of PFASs. Perfluorooctane sulfonate (PFOS) reached a peak concentration in 2001 of 1.1 ng/g, followed by a decrease from 2001 to 2006 (half-life=9 years). Perfluorooctanoic acid (PFOA) increased from 2001 to 2006 (doubling time= 2 years) reaching a peak concentration of 0.80 ng/g. In contrast, three sediment cores from western, central, and eastern Lake Ontario showed increasing temporal trends to surface sediment for all PFASs. PFOA and PFOS concentrations increased from 1988 to 2004 (doubling time= ~ 4 years) in the western Lake Ontario core. The observed variations in temporal trends from different environmental compartments may be a result of the physico-chemical properties of PFASs, ongoing emissions, and the environmental transformation and degradation of PFAS precursor compounds. |
| Doi | 10.1016/j.envint.2012.02.002 |
| Pmid | 22406021 |
| Wosid | WOS:000304745900012 |
| Url | http://www.sciencedirect.com/science/article/pii/S0160412012000347 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | Perfluoroalkyl compounds; Lake Ontario; Sediment; Water; Temporal trends |