An analytical method was developed for screening and quantitative detection of 20 phthalates (PAEs) in consumer products by two-dimensional gas chromatography-time of flight mass spectrometry(GC×GC-TOF MS).Samples were shattered

and followed by ultrasonic extraction with hexane.The extract was purified by dispersive solid phase extraction(dSPE) with graphitized carbon black(GCB) and magnesium sulfate anhydrous(MgSO4)

analyzed by time-of-flight mass spectrometry and quantified by external standard method.Experimental results demonstrated that there were good linear relationships for 20 PAEs in the range of 0.03-30 mg/L with their correlation coefficients(r2) larger than 099.The limits of detection(LODs) and limits of quantitation(LOQs) were in the ranges of 0.09-2213 mg/kg and 0.25-63.1 mg/kg

respectively.The recoveries at low

medium and high three spiked levels ranged from 63.2% to 120% with relative standard deviations(RSDs

n=6) of 0.30%-10%.This method was practically used in the detection for different samples.Results showed that diisononyl phthalate was found containing 155 mg/kg in a plastic sample

and dibutyl phthalate and di(2-ethylhexyl) phthalate were 1.48 mg/kg and 7.66 mg/kg in a rubber sample

respectively.This method could be applied in the determination of 20 phthalates including 5 phthalate isomers in consumer products with accuracy

efficiency and easy pretreatment.