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| 固相萃取-气相色谱-质谱法测定食用油中7种邻苯二甲酸酯类塑化剂 |
| Determination of seven kinds of phthalate acid esters in edible oil by solid-phase extraction-gas chromatography-mass spectrometry |
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| DOI： |
| 中文关键词: 固相萃取 邻苯二甲酸酯 气相色谱-质谱 食用油 |
| 英文关键词:solid-phase extraction phthalate acid esters gas chromatography-mass spectrometry edible oil |
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| 中文摘要: |
| 建立了SPE-GC-MS联用法测定食用油中7种邻苯二甲酸酯的方法。该方法在0.01～5.0 mg/L范围内具有良好的线性，相关系数R2均在0.998 7以上，仪器检出限（S/N=3）在0.06~0.5 μg/L之间，平均回收率在72.4%~103.0%之间。采用本方法对不同种类、不同包装的27个食用油样中7种邻苯二甲酸酯类塑化剂（DMP、DEP、DBP、DPP、BBP、DEHP、DnOP）的含量进行测定。结果表明：食用油中都不同程度地检出塑化剂；27个油样都检测出DEHP，含量范围为0.007～4.752 mg/kg；25个油样检测出DBP，含量范围为0.007～21.290 mg/kg；DEP仅在铁盒装的稻米油样中检出，BBP在2个玻璃瓶装的橄榄油样中检出，所有油样中没有检测出DnOP。在27个受检食用油样中，有9个油样的DBP含量超出国家标准限量（≤0.3 mg/kg），超标率为33.3%； 有2个油样的DEHP含量超出国家标准限量（≤1.5 mg/kg），超标率为7.4%。 |
| 英文摘要: |
| A method for determining seven kinds of phthalate acid esters(PAEs) in edible oil by solid-phase extraction-gas chromatography-mass spectrometry (SPE-GC-MS) was established.The method had good linearship in the range of 0.01-5.0 mg/L with correlation coefficient R2 more than 0.998 7;the instrumental limit of detection (S/N=3) of the method ranged from 0.06 to 0.5 μg/L; the average recovery was 72.4%- 103.0%. The contents of seven kinds of PAEs (DMP，DEP，DBP，DPP，BBP，DEHP，DnOP) in 27 edible oils samples of different kinds and packaging materials were determined by SPE-GC-MS.The results showed that PAEs were all detected in the 27 edible oils in different degrees; DEHP was detected in all of the 27 edible oils samples, and its content ranged from 0.007 to 4.752 mg/kg; DBP was detected in 25 edible oils samples, and its content was in the range of 0.007-21.290 mg/kg; DEP was only detected in rice bran oil sample packaged in iron box, BBP was detected in two olive oils samples packaged in glass bottle and DnOP was detected in none of the edible oils samples. The contents of DBP in 9 samples and DEHP in 2 samples of the 27 tested edible oils samples were respectively over 0.3 mg/kg and 1.5 mg/kg of the national standard limits,and the reject rates were 33.3% and 7.4% respectively. |
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