Perfluorinated alkylated substances and brominated flame retardants in serum of the Czech adult population

We observed statistically significant associations (p < 0.05) between selected PFAS concentrations and the locality, gender, age of donors and education level. None of the BFRs was detected above the LOQ in more than 9% of the samples. The most frequently detected representatives of this group were congeners of polybrominated diphenyl ethers, namely BDE-47 (in 8.7%; range: 0.496-5.44 ng/g lipid weight (l.w.)), BDE-99 (in 6.0%; range: 0.706-9.46 ng/g l.w.), BDE-153 (in 7.3%; range: 0.736-6.44 ng/g l.w.) and BDE-209 (in 7.0%; range: 13.7-2693 ng/g l.w.).