Perfluoroalkyl acids and their precursors in floor dust of children's bedrooms - Implications for indoor exposure
Autor: | Winkens, Kerstin, Giovanoulis, Georgios, Koponen, Jani, Vestergren, Robin, Berger, Urs, Karvonen, Anne M., Pekkanen, Juha, Kiviranta, Hannu, Cousins, Ian T. |
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Přispěvatelé: | Department of Public Health, Clinicum, University of Helsinki |
Jazyk: | angličtina |
Rok vydání: | 2018 |
Předmět: |
CONSUMER PRODUCTS
ENVIRONMENT HOMES COMPOUNDS PFCS AIR POLYFLUOROALKYL SUBSTANCES PFASS IN-HOUSE DUST 3142 Public health care science environmental and occupational health EARLY-LIFE Standard reference material (SRM 2585) Child exposure Estimated daily intake (EDI) Fluorotelomer alcohol (FTOH) Per- and polyfluoroalkyl substance (PFAS) POLYFLUORINATED COMPOUNDS EMISSION Polyfluoroalkyl phosphoric acid ester (PAP) |
Popis: | We analysed floor dust samples from 65 children's bedrooms in Finland collected in 2014/2015 for 62 different per- and polyfluoroalkyl substances (PFASs) with a simple and highly efficient method. Validation results from the analysis of standard reference material (SRM) 2585 were in good agreement with literature data, while 24 PFASs were quantified for the first time. In the dust samples from children's bedrooms, five perfluoroalkyl carboxylic acids (PFCAs) and perfluorooctane sulfonic acid (PFOS) were detected in more than half of the samples with the highest median concentration of 5.26 ng/g for perfluorooctanoic acid (PFOA). However, the dust samples were dominated by polyfluoroalkyl phosphoric acid esters (PAPs) and fluorotelomer alcohols (FTOHs) (highest medians: 53.9 ng/g for 6:2 diPAP and 45.7 ng/g for 8:2 FTOH). Several significant and strong correlations (up to p = 0.95) were found among different PFASs in dust as well as between PFASs in dust and air samples (previously published) from the same rooms. The logarithm of dust to air concentrations (log K-dust/air) plotted against the logarithm of the octanol-air partition coefficient (log K-oa) resulted in a significant linear regression line with R-2 > 0.88. Higher dust levels of PFOS were detected in rooms with plastic flooring material in comparison to wood (p |
Databáze: | OpenAIRE |
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