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3350461 
Journal Article 
Does the source migration pathway of HBCDs to household dust influence their bio-accessibility? 
García-Alcega, S; Rauert, C; Harrad, S; Collins, CD 
2016 
1 
Science of the Total Environment
ISSN: 0048-9697
EISSN: 1879-1026 
569-570 
244-251 
English 
27343943 
WOS:000382269000026 
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.