The determination of polycyclic aromatic hydrocarbons in edible fats and oils with two methods

The purpose was to detect EU 15 +1PAHs in edible fats and oils by establishing two motheds that were the isotope internal standard quantified-Qu ECh ERS-gas chromatography-tandem mass spectrometry and the GPC-high performance liquid chromatography-fluorescence detection. 104 edible oils and fats samples was detected. Then the results of the two motheds were compared. Results:both methods met the detection requirements. The RSD of precision were less than 5.4%(Method One) and 6.81%(Method Two) and the average recoveries of spiked samples were in the range of 71.3% ~111.6%(Method One) and 93.1% ~119%(Method Two). The correlation coefficiency of standard curves were over 0.998(Method One) and 0.990(Method One). The quantitation limit of the two motheds were 0.23 ~0.50μg/kg and 0.9μg/kg respectively. The blind determination results for the samples from the Food Analysis Performance Assessment Scheme(FAPAS) were satisfactory. The results of two methods for 104 samples had no differences by statistical evaluation. Conclusion:both methods meet the testing requirements for the determination of EU 15+1PAHs in edible fats and oils.