Leaching of brominated flame retardants (BFRs) from BFRs-incorporated plastics in digestive fluids and the influence of bird diets

Abstract Leaching kinetics of additive-derived brominated flame retardants (BFRs) in different sizes (100 μm–2 mm) of acrylonitrile-butadiene-styrene copolymer (ABS) plastics were investigated in water, simulated gastric fluids, and simulated gastrointestinal fluids. The influences of bird diets (fish, clam, and rice) on the leaching of BFRs from plastics were also explored. The leaching kinetics of BFRs were best fitted with the second-order diffusion model. The leaching rates of BFRs increased for the less lipophilic BFRs in finer sizes of ABS. The log-transformed leached proportions of BFRs at equilibrium were significantly correlated with logKOW of BFRs (p