食品科学

• 分析检测 • 上一篇    下一篇

GC-MS法测定烟熏腊肉中的甲醛含量

芮露明,彭增起*,汪 敏,张 露,姚 瑶,王复龙,张雅玮,惠 腾,李君珂   

  1. 南京农业大学食品科技学院,江苏 南京 210095
  • 出版日期:2014-04-25 发布日期:2014-05-13
  • 通讯作者: 彭增起
  • 基金资助:

    国家现代农业产业技术体系建设专项(nycytx-38)

Determination of Formaldehyde Content in Smoked Meat by GC-MS

RUI Lu-ming, PENG Zeng-qi*, WANG Min, ZHANG Lu, YAO Yao, WANG Fu-long, ZHANG Ya-wei, HUI Teng, LI Jun-ke   

  1. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
  • Online:2014-04-25 Published:2014-05-13
  • Contact: PENG Zeng-qi

摘要:

以烟熏腊肉为研究对象,经过条件优化,建立用气相色谱-质谱测定烟熏肉制品中甲醛含量的方法。结果 表明,最优的衍生化处理与萃取的条件为:加入0.3 mL 2,4-二硝基苯肼,衍生化温度60 ℃,衍生化时间30 min,用 二氯甲烷进行萃取,萃取2 次;根据已建立的烟熏腊肉中的甲醛检测方法,低、中、高3 个水平的平均回收率依次 为79.8%、84.0%以及89.4%;重复性相对标准偏差为2.89%,检出限为0.50 mg/kg。该方法简便快速、结果准确、灵 敏度高,可作为测定烟熏肉制品中甲醛的有效方法。

关键词: 甲醛, 气相色谱-质谱, 萃取, 衍生

Abstract:

A method was developed for the determination of formaldehyde in smoked meat using gas chromatograph-mass
spectrometer (GC-MS). The optimal derivatization and extraction conditions were determined as the follows: derivatization
with 0.3 mL of 2,4-dinitrophenylhydrazine at 60 ℃ for 30 min, and two repeated extractions with dichloromethane. The
average recoveries at low, moderate, and high spiked levels were 79.8%, 84.0% and 89.4%, repeatability. The repeatability
expressed as relative standard deviation was 2.89%, and the detection limit was 0.50 mg/kg. The method is simple, rapid,
accurate, and sensitive and can be used for the determination of formaldehyde in smoked meat.

Key words: formaldehyde, gas chromatograph-mass spectrometer (GC-MS), extraction, derivatization

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