食品科学 ›› 2012, Vol. 33 ›› Issue (10): 251-254.doi: 10.7506/spkx1002-6630-201210052

• 分析检测 • 上一篇    下一篇

固相萃取- 气相色谱法测定食品包装材料中邻苯二甲酸酯类物质

曹小妹1,吴晓燕2,李 挥3,张敬轩3,高文惠1,*   

  1. 1.河北科技大学生物科学与工程学院 2.河北省产品质量监督检验院 3.河北省食品质量监督检验研究院
  • 出版日期:2012-05-25 发布日期:2012-05-07
  • 基金资助:
    河北省科技支撑计划项目(10276902D);河北省科技厅重大科技攻关项目(09227134D); 河北省自然科学基金项目(B2008000669)

Determination of Phthalate Esters in Plastic Food Packing Materials by Solid Phase Extraction-Gas Chromatography

CAO Xiao-mei1,WU Xiao-yan2,LI Hui3,ZHANG Jing-xuan3,GAO Wen-hui1,*   

  1. (1. College of Biological Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; 2. Hebei Institute of Product Quality Supervision and Determination, Shijiazhuang 050000, China; 3. Hebei Institute of Food Quality Supervision, Inspection and Research, Shijiazhuang 050000, China)
  • Online:2012-05-25 Published:2012-05-07

摘要: 建立采用固相萃取-气相色谱法同时分析检测邻苯二甲酸二丁酯(DBP)、邻苯二甲酸二环己酯(DCHP)、邻苯二甲酸丁基苄基酯(BBP)和邻苯二甲酸二-2-乙基己酯(DEHP)4种邻苯二甲酸酯类物质的方法。研究塑料包装材料中邻苯二甲酸酯类在水、65%乙醇、4%乙酸、正己烷4种模拟液中的溶出及利用固相萃取技术对浸出液进行富集的情况,考察气相色谱操作条件对4种邻苯二甲酸酯类物质分离的影响。结果表明,该方法具有良好的线性相关性,线性相关系数在0.9986~0.9994之间;回收率在80.63%~95.50%之间;DBP、BBP、DCHP和DEHP的检测限分别是0.050、0.010、0.055μg/mL和0.012μg/mL。该方法样品预处理简便,测定方法灵敏、可靠,可用于食品包装材料中邻苯二甲酸酯类的监测。

关键词: 邻苯二甲酸酯类物质, 模拟物, 固相萃取, 气相色谱法

Abstract: A method was developed by solid phase extraction-gas chromatography for the simultaneous determination of dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), dicyclohexyl phthalate (DCHP) and di-2-ethylhexyl phthalate (DEHP) in plastic food packing materials. The dissolution of phthalate esters from plastic packing materials into water, 65% alcohol, 4% acetic acid and n-hexane was studied. The enrichment of phthalate esters in extraction solution was conducted by solid phase extraction. The effect of gas chromatographic conditions on the separation of four phthalate esters was investigated. The results showed that the method had an excellent linear relationship with the correlation coefficient of 0.9986-0.9994. The recovery rates and detection limits of this method for DBP, BBP, DCHP and DEHP were 80.63%-95.50%, and 0.050, 0.010, 0.055 and 0.012 μg/mL, respectively. This developed method is easy, sensitive and reliable, which can be used to analyze phthalate esters in plastic food packing materials.

Key words: phthalate esters, simulants, solid-phase extraction, gas chromatography

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