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| 液液萃取-气质联用法测定食用植物油中的敌草快含量 |
| Determination of diquat content in edible vegetable oils by liquid-liquid extraction and GC-MS |
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| DOI： |
| 中文关键词: 食用植物油 敌草快 液液萃取 气相色谱串联质谱法 |
| 英文关键词:edible vegetable oil diquat liquid-liquid extraction GC-MS |
| 基金项目: |
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| 中文摘要: |
| 建立了食用植物油中敌草快含量的液液萃取-气质联用测定方法。样品以水为提取溶剂，用硼氢化钠还原，正己烷萃取还原产物，气相色谱串联质谱法测定。结果表明：采用m/z 108作为定量离子，在0.20～10 μg/mL范围内线性关系良好（Y=266.5X-3 326.98，r=0.999 7）；在不同添加水平下，菜籽油、大豆油、玉米油的加标回收率在90.6%～93.8%之间，相对标准偏差为0.25%～3.01%。该方法简便准确，可用于食用植物油中敌草快含量的测定。 |
| 英文摘要: |
| A method for determining the content of diquat in edible vegetable oils was establish. The samples were extracted by deionized water, and reduced by NaBH4. The reduction compounds were extracted by n-hexane and determined by GC-MS. The results showed that in the range of 0.20-10 m/zμg/mL, good linearity(Y=266.5X-3 326.98，r=0.999 7) was obtained using m/z 108 as quantification ion. The recoveries for rapeseed oil, soybean oil and corn oil at different additional levels ranged from 90.6% to 93.8% with relative standard deviations (RSDs) of 0.25%-3.01%. This method had the items of simpleness and accuracy, which could be used for determinting diquat in edible vegetable oils. |
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