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Temporal changes (1...
Temporal changes (1997-2012) of perfluoroalkyl acids and selected precursors (including isomers) in Swedish human serum
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- Gebbink, Wouter A. (author)
- Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
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Glynn, Anders (author)
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- Berger, Urs (author)
- Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
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(creator_code:org_t)
- Elsevier BV, 2015
- 2015
- English.
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In: Environmental Pollution. - : Elsevier BV. - 0269-7491 .- 1873-6424. ; 199, s. 166-173
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https://doi.org/10.1...
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Abstract
Subject headings
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- Concentrations (including isomer patterns) and temporal changes (1997-2012) of perfluoroalkyl acids (PFAAs) and selected perfluorooctane sulfonate (PFOS) and perfluoroalkyl carboxylic acid (PFCA) precursors were determined in serum samples from Swedish women. Perfluorooctane sulfonamide (FOSA) and perfluorooctane sulfonamidoacetic acid (FOSAA), as well as its N-methyl and N-ethyl derivatives (MeFOSAA and EtFOSAA) were consistently detected. Highest PFOS precursor concentrations were found for EtFOSAA (before year 2000) or MeFOSAA and FOSAA (after 2000). Disappearance half-lives for all PFOS precursors were shorter compared to PFOS. 4:2/6:2 and 6:2/6:2 polyfluoroalkyl phosphate diesters (diPAPs) were detected in <60% of the samples, whereas 6:2/8:2 and 8:2/8:2 diPAPs were detected in >60% of the samples, but showed no significant change in concentrations over time. Linear and sumbranched isomers were quantified separately for three PFAAs and three precursors. Significant changes between 1997 and 2012 in the % linear isomer were observed for PFOA and FOSA (increase) and PFOS (decrease).
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Keyword
- Per- and polyfluoroalkyl substances
- Precursors
- Human serum
- Temporal trend
- PAPs
- Isomers
Publication and Content Type
- ref (subject category)
- art (subject category)
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