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| 同位素稀释-GC-MS/MS测定植物油中邻苯二甲酸酯 |
| Determination of PAEs in vegetable oil by GC-MS/MS with isotope dilution |
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| DOI： |
| 中文关键词: 同位素稀释 邻苯二甲酸酯类 气相色谱-质谱/质谱 植物油 |
| 英文关键词:isotope dilution phthalate esters gas chromatography-tandem mass spectrometry vegetable oil |
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| 中文摘要: |
| 采用同位素稀释-气相色谱-质谱/质谱（GC-MS/MS）技术同时测定植物油中16种邻苯二甲酸酯类塑化剂。样品用正己烷饱和的乙腈提取，经固相萃取小柱净化，采用GC-MS/MS测定，内标法定量。结果表明：该方法线性关系良好，相关系数在0.99以上，检出限和定量限分别为3.0 μg/kg 和10.0 μg/kg；添加10、50、100 μg/kg 3个水平的混合标准溶液，植物油中16种邻苯二甲酸酯的平均回收率在82.3%~104.5%，相对标准偏差在1.3%~10.8%。该方法灵敏度高、干扰小、定量结果准确可靠，适合植物油中邻苯二甲酸酯类塑化剂的检测。 |
| 英文摘要: |
| Sixteen phthalate esters(PAEs) were simultaneously determined in vegetable oil using gas chromatography-tandem mass spectrometry (GC-MS/MS) with isotope dilution. The samples were extracted with acetonitrile saturated by n-hexane and cleaned up with solid phase extraction column，then determined by GC-MS/MS using internal standard method for quantitative analysis. The results showed that the method had a good linear relationship with correlation coefficient above 0.99，and the detection limit and quantitation limit were 3.0 μg/kg and 10.0 μg/kg，respectively；adding PAEs mixed standard solution with three levels 10，50，100 μg/kg to vegetable oil，the mean recoveries of sixteen PAEs in vegetable oil were 82.3%-104.5%，and the relative standard deviations were 1.3%-10.8%. The method had high sensitivity，little interference and good precision，which was suitable for the determination of PAEs in vegetable oil. |
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