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12.5*12.5*45mm(10mm光
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12.5*12.5*45mm(10mm光
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12.5*12.5*45mm(10mm光
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12.5*12.5*45mm(10mm光
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12.5*12.5*45mm(10mm光
Polycyclic aromatic hydrocarbonsin edible oils: analysis by molecularly imprinted solid-phase extrac
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提供商
上海安譜實驗科技股份有限公司
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482.7KB
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24次
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PDF 文件
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317次
摘要
A new method was developed to determine the presence of polycyclic aromatic hydrocarbons (PAHs) in edible fats and oils. Samples are dissolved in petroleum ether, and PAHs are adsorbed onto a molecularly imprinted solid-phase extraction (MIPSPE) cartridge and eluted with ethyl acetate. After evaporation of the solvent, PAHs were re-dissolved in acetonitrile and analyzed by RP-HPLC with fluorescence detection. The detection limits of PAHs were 0.04–0.66 μg/kg and the recovery rates ranged from 56.0 percent to 109.1 percent. The total contents of PAHs in edible oils were 18.00–639.96 μg/kg. The developed method was effective due to its high specificity for PAHs.（一種新方法被開發(fā)用于測定食用脂肪和油中的多環(huán)芳烴(PAHs)含量。樣品溶解在石油醚中,多環(huán)芳烴吸附在分子印跡固相萃取上,用乙酸乙酯洗脫。溶劑揮發(fā)后,多環(huán)芳烴在乙腈中重新溶解,并用帶氟檢測器的RP-HPLC分析。多環(huán)芳烴(PAHs)的檢測限是0.04–0.66 μg/kg,回收率從56%到109.1%。多環(huán)芳烴在食用油的總含量是18.00–639.96 μg/kg。）