A solid phase extraction coupled with high performance liquid chromatographic(SPE/HPLC) method was developed for the determination of nine halophenols,e.g.2,6-dichlorophenol,2,3-dichlorophenol,2,5-dichlorophenol,2,4-dichlorophenol,3,4-dichlorophenol,3,5-dichlorophenol,2,4,6-trichlorophenol,pentachlorophenol and bithionol,in cosmetics.The samples were dispersed with saturated sodium chloride solution,extracted with acetonitrile under ultrasonication,and cleaned up with HLB solid phase extraction.The separation of nine halophenols was carried out on a C8 column using methanol-acetonitrile-ammonium acetate buffer as mobile phase.The result indicated that the calibration curves of nine halophenols were linear between 1.0 mg/L and 50.0 mg/L,with correlation coefficients more than 0.999.The limits of detection were in the range of 0.3-0.6 mg/kg.The mean recoveries of nine halophenols at spiked levels of 2.0,4.0,20.0 mg/kg were in the range of 92%-105% ,with RSDs(n=6) of 0.89%-3.1%.The method was sensitive,reproducible and accurate. |