| 表面解吸常压化学电离质谱法快速筛查劣质食用油 |
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| 引用本文： | 方小伟,张丽丽,贾滨,张兴磊,陈焕文.表面解吸常压化学电离质谱法快速筛查劣质食用油[J].现代科学仪器,2011(5):94-97. |
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| 作者姓名： | 方小伟 张丽丽 贾滨 张兴磊 陈焕文 |
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| 作者单位： | 1. 东华理工大学／江西省质谱科学与仪器重点实验室,江西南昌,330013
2. 东华理工大学／江西省质谱科学与仪器重点实验室,江西南昌330013／吉林大学化学学院,长春130021 |
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| 基金项目： | 国家基础性科技工作专项(2008IM040400)资助6 |
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| 摘 要： | 采用自行研制的表面解吸常压化学电离源（SDAPCI）,在无需样品预处理的前提下用质谱法直接分析不同品质油品（地沟油、市售品牌食用油）,获得其化学指纹图谱,并通过主成分分析（PCA）方法,对指纹谱图信息进行数据分析,进而对不同品质油品进行筛查。结果表明：（1）地沟油与品牌食用油的指纹谱图间存在差异（;2）SDAPCI-MS结合PCA方法,能较好地将地沟油样品与正常的食用油样品进行区分（;3）本方法无需前处理、灵敏度高,分析速度快（单个样品分析时间约1.0 min）,实现了高通量油样的快速筛查,为食品安全中快速筛查地沟油提供了一种快速、高效、灵敏的分析方法。
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| 关 键 词： | 表面解吸常压化学电离源 质谱法 主成分分析方法 地沟油 食品安全 |
Rapid Screening of Inferior Quality Oils by Surface Desorption Atmospheric Pressure Chemical Ionization Mass Spectrometry |
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| Fang Xiaowei,Zhang Lili,Jia Bin,Zhang Xinglei,Chen Huanwen.Rapid Screening of Inferior Quality Oils by Surface Desorption Atmospheric Pressure Chemical Ionization Mass Spectrometry[J].Modern Scientific Instruments,2011(5):94-97. |
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| Authors: | Fang Xiaowei Zhang Lili Jia Bin Zhang Xinglei Chen Huanwen |
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| Affiliation: | Fang Xiaowei1,Zhang Lili1,2,Jia Bin1,Zhang Xinglei1,Chen Huanwen1 (1East China Institute of Technology,Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation,Jiangxi Nanchang 330013,2College of Chemistry,Jilin University,Changchun,130021) |
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| Abstract: | By using a home-made surface desorption atmospheric pressure chemical ionization source,illicit cooking oils and normal edible oils were directly analyzed by mass spectrometry without any sample pretreatment.The MS data were further analyzed using principal component analysis(PCA).The SDAPCI-MS fingerprints of illicit cooking oils were different from those of normal edible oils.With the application of PCA,illicit cooking oils were successfully differentiated from normal oils.The method developed here is att... |
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| Keywords: | Surface desorption atmospheric pressure chemical ionization Mass spectrometry Principal component analysis Illicit cooking oil Food safety |
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