Determination of 14 Kinds of Flame Retardants in Leather by Solid Phase Extraction Combined with GC-MS Method

KeyWord:leather  flame retardant  solid phase extraction(SPE)  gas chromatography-mass spectrometry(GC-MS)

Abstract:

      A new method was established to determine 14 kinds of polychlorinated biphenyls(PCBs) and organophosphate esters(OPEs) flame retardants(including TEP£¬TBP£¬TCEP£¬PCB18£¬TCPP£¬PCB101£¬PCB153£¬PCB138£¬TPhP£¬TEHP£¬PCB180£¬o-TTP£¬m-TTP and p-TTP) in leather by solid phase extraction(SPE) coupled with gas chromatography-mass spectrometry(GC-MS).The samples were ultrasonically extracted with acetonitrile£¬and purified with a Florisil solid phase extracting column.Analytes were successfully separated on a DB-5MS capillary column,and detected by GC-MS in selected ion monitoring mode(SIM).Analytes were qualitatively analyzed via retention time and abundance ratio of characteristic ions£¬and quantified by the external standard method.14 flame retardants presented favorable linearity in the respective linear ranges£¬with correlation coefficients(r2) more than 0.998.The detection limits(S/N=3) ranged from 25.0 ¦Ìg/kg to 50.0 ¦Ìg/kg£¬the average recoveries(n=6) were in the range of 82.0%-112.8%£¬and the relative standard deviations(RSDs£¬n=6) were 2.1%-9.4%.The method is accurate£¬rapid and sensitive,and is suitable for the determination of 14 flame retardants in leather samples.