[Determination of polybrominated diphenyl ethers (PBDEs) in biota using GC/MS method].

The aim of this study is to build a method of determining PBDEs in biota, and to gain the optimum condition of preparation of samples, and the best condition of Gas Chromatography (GC) and Mass Spectrometer (MS). Also, the requirements of quality, quantity and experimental condition were assessed. According to the validation of the quality control (QC), the results proved that the analytical method satisfied the requirements of the determination of PBDEs in biota. The recoveries were between 50.5% and 112.3%, of which the relative standard deviations were between 5.3% and 9.9% , and the limits of detection were between 7.1 and 161.8 pg/g. Based on the determination method, several bred and wild fishes were analyzed. The concentration of PBDEs in the wild Chinese perch and crucian carp and 2 bred weevers were 1.53, 1.11, 5.31, 6.15 ng/g(dry weight), respectively, and the most congener was BDE47.