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| Determination of PAHs in the Paper Packaging Materials Using Gas Chromatography-Tandem Mass Spectrometry Combined with Ultrasonic Extraction |
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| DOI：10.11980/j.issn.0254-508X.2014.04.004 |
| Key Words:polycyclic aromatic hydrocarbons paper packaging materials gas chromatography-tandem mass spectrometry ultrasonic extraction |
| Fund Project:本课题得到国家自然科学基金项目（31170548）资助。 |
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| Abstract:An effective method was established for the simultaneous determination of 18 kinds of banned polycyclic aromatic hydrocarbons（PAHs）in paper packaging materials which were intended to be used to contact with foodstuffs. PAHs in paper packaging materials were ultrasonically extracted with acetone-hexane（1∶1）as the extraction solvent at 40.0℃, the extractive was purified by silica solid phase extraction column. The extractive was analyzed by gas chromatography-tandem mass spectrometry and the contents of each analytes were calibrated by external standard method. The limits of quantitation（LOQ）changed from 0.1 μg/kg to 2.0 μg/kg at the condition of signal/noise（S/N）of 10. At the same time, the correlation coefficients were all higher than 0.998. The spiked average recoveries varied from 57.5% to 96.4% while the relative standard deviation（RSD）changed from 3.0% to 9.8%. The method was rapid, simple, accurate and sensitive, which could satisfy completely the demand of the analysis of PAHs in paper packaging materials which were intended to contact with foodstuffs. |
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