Informace o publikaci

Screening for perfluoroalkyl acids in consumer products, building materials and wastes



Rok publikování 2016
Druh Článek v odborném periodiku
Časopis / Zdroj Chemosphere
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Obor Vliv životního prostředí na zdraví
Klíčová slova Building materials; Consumer products; Indoor; PFASs; PFOS
Popis Perfluoroallcyl and polyfluoroalkyl substances (PFASs) are a large group of important chemical compounds with unique and useful physico-chemical properties, widely produced and used in many applications. However, due to the toxicity, bioaccumulation and long-range transport potential of certain PFASs, they are of significant concern to scientists and policy makers. To assess human exposure to PFASs, it is necessary to understand the concentrations of these emerging contaminants in our environment, and particularly environments where urban population spend most of their time, i.e. buildings and vehicles. A total of 126 samples of building materials, consumer products, car interior materials and wastes were therefore analyzed for their content of key PFASs - 15 perfluoroallcyl acids (PFAAs). At least one of the target PFAA5 was detected in 88% of all samples. The highest concentration of M15PFAAs was found in textile materials (77.61 mu g kg(-1)), as expected, since specific PFAAs are known to be used for textile treatment during processing. Surprisingly, PFAA5 were also detected in all analyzed composite wood building materials, which were dominated by perfluoroalkyl carboxylic acids with 5-8 carbons in the chain (Sigma 4PFCAs up to 32.9 mu g kg(-1)). These materials are currently widely used for building refurbishment, and this is the first study to find evidence of the presence of specific PFASs in composite wood materials. Thus, in addition to consumer products treated with PFASs, materials used in the construction of houses, schools and office buildings may also play an important role in human exposure to PFASs.
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