Abstract: A pretreatment method for the extraction of decabromodiphenyl ether from electronic and electrical products by FOSS Soxtec 8000 automatic Soxhlet extractor has been established. The effects of extraction temperature and extraction time on the extraction efficiency were optimized and evaluated. The results showed that the optimal extraction temperature was 240℃ and the extraction time was 60 min, which was far lower than the traditional Soxhlet extraction time. The quality control samples and blank spiked samples were determined by this method for six times. The relative standard deviation of the determination results was 1.15% and the average recovery was up to 98.2% and 98.8% respectively, which showed excellent extraction efficiency and stability. After each analysis, about 80% toluene can be recovered, and there is no decabromodiphenyl ether detected in the recovered toluene, which can be reused and effectively reduce the use and emission of solvent.

Key words: Automatic Soxhlet extractor, Electronic and electrical products, Decabromodiphenyl ether, Pretreatment method