张双灵, 王世清, 郭康权, 安燕. 鲜猪肉中邻苯二甲酸二异辛酯含量的气相色谱检测方法初探[J]. 农业工程学报, 2007, 23(7): 277-280.
    引用本文: 张双灵, 王世清, 郭康权, 安燕. 鲜猪肉中邻苯二甲酸二异辛酯含量的气相色谱检测方法初探[J]. 农业工程学报, 2007, 23(7): 277-280.
    Zhang Shuangling, Wang Shiqing, Guo Kangquan, An Yan. Determination of di-2-ethylhexyl phthalate in meat by Gas Chromatography[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2007, 23(7): 277-280.
    Citation: Zhang Shuangling, Wang Shiqing, Guo Kangquan, An Yan. Determination of di-2-ethylhexyl phthalate in meat by Gas Chromatography[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2007, 23(7): 277-280.

    鲜猪肉中邻苯二甲酸二异辛酯含量的气相色谱检测方法初探

    Determination of di-2-ethylhexyl phthalate in meat by Gas Chromatography

    • 摘要: 该文采用气相色谱仪对鲜猪肉中邻苯二甲酸二异辛酯(DEHP)的含量进行测定。采用提取、皂化工艺,使DEHP分解为邻苯二甲酸和异辛醇,用水蒸气蒸馏出异辛醇,萃取浓缩进样测定异辛醇的含量,并进一步换算出DEHP含量。结果显示:提取溶剂选用乙醚,提取时间6 h,皂化时间3h,在蒸馏液pH 7条件下,异辛醇萃取率为81.8%~88.0%,方法加标回收率为75.12%~84.95%,检出限为1.07×10-3 mg/kg。该方法降低了对仪器设备的要求,为制定相关标准、保障食品与包装材料的安全提供了依据。

       

      Abstract: The determination of di-2-ethylhexyl phthalate(DEHP) in meat by GC was studied. DEHP was extracted firstly, saponified secondly, thus DEHP was decomposed to phthalic acid and 2-ethyl-1-hexanol. 2-ethyl-1-hexanol was extracted and condensed from the distillate after steam distilled. Then the 2-ethyl-1-hexanol was determined by GC and the amount of DEHP was calculated by conversion. Results show that samples are extracted with diethyl ether for 6 h and then saponified for 3 h, when pH value is 7, the extraction rate is between 81.8% and 88.0%, the recovery rate of the method is between 75.12% and 84.95%, determination limit is 1.07×10-3 mg/kg. This method reduces the requirement to machinery and can be great beneficial for food and package material safety.

       

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