Polybrominated diphenyl ethers (PBDEs) in human milk from Australia

Area of Science:

• Environmental Science
• Toxicology
• Human Health

Background:

• Polybrominated diphenyl ethers (PBDEs) are widely used flame retardants found globally.
• Limited data exists on PBDE levels in the Australian population and environment.
• PBDEs are persistent organic pollutants with potential health implications.

Purpose of the Study:

• To determine PBDE concentrations and congener profiles in Australian human milk.
• To compare Australian PBDE levels with those reported internationally.
• To inform future policy on PBDE use and disposal.

Main Methods:

• Analysis of 157 pooled human milk samples from 12 Australian regions.
• Quantification of 18 PBDE congeners using High-Resolution Gas Chromatography/High-Resolution Mass Spectrometry (HRGC/HRMS).
• Samples collected between 2002 and 2003.

Main Results:

• PBDEs were detected in all Australian human milk pools.
• Mean PBDE concentration was 11.1 ng g(-1) lipid, with BDE-47 being the dominant congener.
• Australian PBDE levels were lower than North America but higher than Europe and Asia.

Conclusions:

• PBDE concentrations in Australian human milk are quantifiable and comparable internationally.
• Regional differences in PBDE levels within Australia appear minimal.
• Further research into PBDE exposure pathways in Australia is needed for effective policy development.