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| 不同前处理方法对植物油中苯并（a）芘含量测定的影响 |
| Effect of different pretreatment methods on determination of benzo（a）pyrene content in vegetable oil |
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| DOI： |
| 中文关键词: 植物油 前处理 苯并（a）芘 含量测定 |
| 英文关键词:vegetable oil pretreatment benzo（a）pyrene content determination |
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| 中文摘要: |
| 通过对比硅胶柱层析法、正己烷-乙醚混合液洗脱氧化铝柱层析法、石油醚洗脱氧化铝柱层析法、溶剂萃取法对植物油中苯并（a）芘含量测定的影响，从而选择最佳的前处理方法。结果表明：当苯并（a）芘质量浓度为7.575 0 ng/mL以下时，硅胶柱层析法的回收率达到100%；正己烷-乙醚混合液洗脱氧化铝柱层析法的回收率达到90%以上，其RSD都在1.0%以下。说明这两种前处理方法的回收率高且稳定，皆能准确地测出植物油中的苯并（a）芘含量；而石油醚洗脱氧化铝柱层析法和溶剂萃取法的回收率分别为54.9%~66.4%和37.3%~44.7%，RSD分别为0.19%~0.77%和1.35%~3.48%，表明这两种方法对植物油中苯并（a）芘含量测定具有较大的误差。 |
| 英文摘要: |
| The effects of silica gel column chromatography，hexane-ethyl ether mixed solution elution alumina column chromatography，petroleum ether elution alumina column chromatography and solvent extraction on determination of benzo（a）pyrene content in vegetable oil were compared to select the best pretreatment method. The results showed that when the mass concentration of benzo（a）pyrene was below 7.575 0 ng/mL，the recovery rates of silica gel column chromatography and hexane-ethyl ether mixed solution elution alumina column chromatography reached 100% and above 90% respectively，and the RSDs of both methods were below 1.0%，which indicated that the two pretreatment methods had high and stable recovery rates，and the content of benzo（a）pyrene in vegetable oil could be accurately detected. While the recovery rates and RSDs of petroleum ether elution alumina column chromatography and solvent extraction were 54.9%-66.4%，37.3%-44.7% and 0.19%-0.77%，1.35%-3.48% respectively，which indicated a great error in determination of benzo（a）pyrene content in vegetable oil by the two methods. |
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