Abstract:With the aim of control the pollution of phthalic acid esters in plastic bottled edible oil,the corresponding method for phthalic acid esters by GC-MS was developed in this manuscript.The sample was dissolved in hexane and purified by florisil solid-phase extraction column.Then it measured by GC-MS,using external standard method to quantitative analysis.In the 1.0~50.0 mg/L scope,it has the good linear relationship(r>0.999 8);lowest detectable limit smaller than 0.03 mg/L;the recovery rate of the phthalic acid esters at 5 mg/kg,10 mg/kg and 15 mg/kg addition were ranged from 88.85% to 101.83%,the relatively standard deviation is in1.44%~2.77%.When it measured between 0 to 24 hours,the relatives standard deviation is smaller than 2.06%.This method can effectively eliminate the interference of other matrix from edible oil.The relative standard deviation of standard and sample experimental precision are within 0.51% and 1.37%.The results shows that this method is simple,rapid,stable,sensitive and accurate for qualitative and quantitative determination of phthalic acid esters from edible oil.
