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Short-chain PFAS in US homes
Ultrashort PFAS like TFA now dominate dust, water, and serum in sampled US homes.
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How many people and homes?
81 participants.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
How many PFAS were detected?
39 of 47 targeted compounds.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
Which PFAAs dominated all matrices?
Ultrashort- and short-chain PFAAs.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
Dust, water, and serum vs urine?
C2–C3 dominated dust, water, and serum; C4–C5 dominated urine.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
Share of total PFAAs from short chains?
69–100%.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
Most abundant dust PFAA?
TFA, median 220 ng/g, 75% of dust PFAAs.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
TFA detection in dust?
84% of dust samples.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
Second dust PFAA?
PFPrA (C3), median 26 ng/g, DF 99%.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
PFOA and PFOS in dust?
Frequently detected (98% and 95%) but lower medians (5.9 and 10 ng/g) than ultrashort acids.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
Time spent at home?
About 17 ± 5 hours per day.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified
Drinking-water source?
Tap water for 90% of households; 10% private wells.
Source: Elevated Levels of Ultrashort- and Short-Chain Perfluoroalkyl Acids in US Homes and People · DOI · quote verified