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Polybrominated organic compounds

Determining flame retardants, such as polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE), in polymers is also part of RoHS Directive 2002/95/EC. Their concentration in electrical and electronic equipment is limited to 1000 mg/kg.

Determining PBBs and PBDEs using liquid chromatography
The polybrominated substances in the plastic are concentrated in a suitable solvent using Soxhlet extraction. The extract is then filtered and injected.

After chromatographic separation of the polybrominated compounds on a reversed-phase C18 column, their absorption is recorded at different wavelengths in a UV detector.

Both polybrominated compounds and chromium(VI) can be determined using the 844 UV/VIS Compact IC.

Applicationd download

AN-U-039 Polybrominated diphenyl ethers in polymers by UV detection, as per IEC 62321 method for RoHS testing