| 气相色谱-串联质谱法测定牛奶中多氯联苯及多环芳烃 |
| 点此下载全文 |
|
| 基金项目:国家质检总局科技计划项目（2013IK154） |
|
| 中文摘要:建立了快速测定牛奶中20种多氯联苯（PCBs）和多环芳烃（PAHs）的气相色谱-串联质谱（GC-MS/MS）分析方法。目标化合物用正己烷提取3次，Cleanert BaP-SPE固相萃取柱净化，GC-MS/MS测定。结果表明，20种目标物在5~200 μg/L范围内呈良好线性，线性相关系数均大于0.99，方法定量下限为1.0 μg/kg。在1.0，2.0，5.0 μg/kg 3个加标水平下的平均回收率为67.3%~106.9%，相对标准偏差（RSD）为3.1%~13.9%。该方法简便、快速、准确，可用于牛奶中多氯联苯和多环芳烃残留的检测，为牛奶的质量控制和安全评价提供了保证。 |
| 中文关键词:气相色谱-串联质谱 多氯联苯 多环芳烃 牛奶 |
| |
| Determination of Polychlorinated Biphenyls and Polycyclic Aromatic Hydrocarbons in Milk by Gas Chromatography-Tandem Mass Spectrometry |
|
|
| Abstract:A gas chromatography-tandem mass spectrometric（GC-MS/MS） method was developed for the analysis of 20 polychlorinated biphenyls（PCBs） and polycyclic aromatic hydrocarbons（PAHs） in milk.The sample was cleaned up with Cleanert BaP SPE column.The target compounds were eluted by n hexane,and then analyzed by GC-MS/MS.The results showed that target analytes displayed good linear relationships over concentration range of 5-200 μg/L,with correlations coefficients more than 0.99.The quantitation limits were all 1.0 μg/kg.The average recoveries of 20 compounds at three spiked levels of 1.0,2.0,5.0 μg/kg ranged from 67.3% to 106.9%,with relative standard deviations（RSD） of 3.1%-13.9%.With the advantages of simplicity,rapidness and accuracy,the method is applicable for the determination of PCBs and PAHs in milk,and provides a guarantee for quality control and safety evaluation of milk. |
| Key Words:gas chromatography-tandem mass spectrometry（GC-MS/MS） polychlorinated biphenyls（PCBs） polycyclic aromatic hydrocarbons（PAHs） milk |
| 引用本文：艾连峰,李玮，王敬，马育松，陈瑞春，郭春海.气相色谱-串联质谱法测定牛奶中多氯联苯及多环芳烃[J].分析测试学报,2015,34(5):570-575. |
| 摘要点击次数: 2446 |
| 全文下载次数: 429 |
| 查看全文 下载PDF阅读器 |
|
|
