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FRs have also been documented to migrate from toys into artificial saliva (Brandsma et al., 2022). With migration rates determined from subjecting contaminated toys to artificial saliva to mimic mouthing by children, Brandsma et al. estimated children’s intake at up to 0.22 ng/kg bw/day for BDE-209, 0.88 ng/kg bw/day for 2,4,6-TBP, 0.03 ng/kg bw/day for TTBP-TAZ, and 2.28 ng/kg bw/day for TBBPA. These values were derived from the highest amount of migration detected, but may not represent the worst-case scenario, as Chen et al. (2019) detected greater migration using human volunteers.

https://www.sciencedirect.com/science/article/pii/S0045653524022173?via%3Dihub