食品科学 ›› 2009, Vol. 30 ›› Issue (6): 167-170.doi: 10.7506/spkx1002-6630-200906036

• 分析检测 • 上一篇    下一篇

气相色谱-FID检测器检测海产品中的二甲胺

贾 佳,朱军莉,励建荣*   

  1. 浙江工商大学食品、生物与环境工程学院,浙江省食品安全重点实验室
  • 收稿日期:2008-04-01 修回日期:2008-07-23 出版日期:2009-03-15 发布日期:2010-12-29
  • 通讯作者: 励建荣 E-mail:lijianrong@zjgsu.edu.cn
  • 基金资助:

    国家“863”计划重点项目(2007AA091806);浙江省科技厅重大科技攻关项目(2005C12030)

Determination of Dimethylamine in Sea Food by Gas Chromatography Coupled with Hydrogen Flame Ionization Detector (GC-FID)

JIA Jia,ZHU Jun-li,LI Jian-rong*   

  1. (College of Food Science, Biotechnology and Environmental Engineering, Zhejiang Gongshang University,
    Food Safety Key Laboratory of Zhejiang Province, Hangzhou 310035, China)
  • Received:2008-04-01 Revised:2008-07-23 Online:2009-03-15 Published:2010-12-29
  • Contact: LI Jian-rong* E-mail:lijianrong@zjgsu.edu.cn

摘要:

采用气相色谱-FID 检测器对海产品中的二甲胺进行检测。本实验对样品中二甲胺的提取、衍生条件以及气相色谱的分析方法进行了研究。样品经7.5% 三氯乙酸提取,取上清液在60℃下与对甲苯磺酰氯反应1h,衍生产物在确定的气相色谱条件下进行分析。结果显示:二甲胺在0.001~2mg/ml 的浓度范围内线性相关系数为0.9998,日内精密度RSD 为2.8%,日间精密度RSD 为5.0%。最低检出限为0.38 μ g/ml,定量限为0.71μg/ml。回收率在91.21%~103.24% 之间。该方法操作简单,灵敏度高,稳定性好。

关键词: 二甲胺, 海产品, 气相色谱, 氢火焰离子检测器

Abstract:

An GC-FID method for determination of dimethylamine (DMA) in sea food was developed in this study. The sea food samples were extracted with 7.5% TCA. The supernatant reacted with p-touluenesulfonyl chloride for 1 hour at 60 ℃, and the product of derivatization reaction was analyzed using GC method. The results showed that the correlation coefficient between peak area and DMA concentration in the range of 0.001 mg/ml to 2 mg/ml is 0.9998. The intra-day and inter-day precision RSDs are 2.8% and 5.0%, respectively. The limit of detection and the limit of quantification of DMA are 0.38μg/ml and 0.71μg/ml, respectively. The spike recoveries are in the range of 91.21% to 103.24%. This method has high sensitivity, and is easy-operation.

Key words: dimethylamine, sea food, gas chromatography-flame ionization detector (GC-FID)

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