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| Determination of ten polycyclic aromatic hydrocarbons in edible oil by using fully automatic molecularly imprinted solid phase extraction coupled with high performance liquid chromatography |
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| DOI： |
| KeyWord:solid phase extraction molecular imprinting polycyclic aromatic hydrocarbons edible oil high performance liquid chromatography |
| FundProject: |
| Author Name | Affiliation | | ZHANG Bing1, ZHU Lin1, LI Li1, ZHANG Rui1, GUO Baoyuan1,SHAO Yi2, WANG Songxue1 | 1.Academy of National Food and Strategic Reserves Administration,Beijing 100037, China
2.China National Center for Food Safety Risk Assessment, Beijing 100022, China |
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| Abstract: |
| For rapid determination of polycyclic aromatic hydrocarbons(PAHs)in edible oil, an analysis method for the determination of 10 PAHs in edible oil by using fully automatic molecularly imprinted solid phase extraction and high performance liquid chromatography (HPLC) was established. The sample was dissolved in n-hexane, purified by a molecularly imprinted solid phase extraction column, with 2 mL n-hexane as leaching solution, dichloromethane as elution solvent, and detected by HPLC with fluorescence detector after evaporated by nitrogen. The results showed that the method had a good linear relationship, and high accuracy and good precision. The limit of detection was 0.1-1.3 μg/kg, and the limit of quantitation was 0.3-4.0 μg/kg. The recovery of 10 PAHs in corn oil and peanut oil was 79.2%-114.3% with RSD 0.4%-5.7%. Applying the method to the determination of BaP in actual edible oil samples, the results showed that the BaP in the oils didn′t exceed the national standard limit. The pretreatment is simple and fast, which can realize the automatic processing of solid phase extraction columns and reduce the consumption of solvents. The method established is suitable for the rapid determination of PAHs in edible oil. |
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