Does the source migration pathway of HBCDs to household dust influence their bio-accessibility?

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  • University of Reading


A study was conducted to assess the human bioaccessibility of dust contaminated with hexabromocyclododecane (HBCD) via two migration pathways a) volatilisation with subsequent partitioning to dust particles, and b) abrasion of treated textile fibres directly to the dust. This was achieved using previously developed experimental chamber designs to generate dust samples contaminated with HBCDs emitted from a HBCD treated textile curtain. The generated dust samples were exposed to an in vitro colon extended physiologically based extraction test (CE-PBET). The bioaccessibility of the HBCDs which were incorporated within dust as a result of volatilisation from the curtain material with subsequent partitioning to dust was higher than in dusts contaminated with HBCDs via abrasion of the curtain (35% and 15% respectively). We propose this occurs due to a stronger binding of HBCDs to treated fabric fibres than that experienced following volatilisation and sorption of HBCDs to dust particles.


Original languageEnglish
Pages (from-to)244-251
Number of pages8
JournalScience of the Total Environment
Early online date22 Jun 2016
Publication statusPublished - 1 Nov 2016


  • Abrasion, Flame retardants, In vitro digestion model, Indoor environment, Oral exposure, Volatilisation