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| 索氏提取-气相色谱法测定食品纸包装材料中的多氯联苯 | |
| 引用本文： | 郭丽敏,白彦坤,李强,张岩,李挥,贾英民.索氏提取-气相色谱法测定食品纸包装材料中的多氯联苯[J].现代仪器,2009,15(6). |
| 作者姓名： | 郭丽敏 白彦坤 李强 张岩 李挥 贾英民 |
| 作者单位： | 1. 河北农业大学,保定,071001;河北省食品质量监督检验研究院,石家庄,050051 2. 河北省食品质量监督检验研究院,石家庄,050051 3. 河北农业大学,保定,071001 |
| 基金项目： | 河北省质量技术监督局科技计划项目 |
| 摘 要： | 建立一种测定食品纸包装材料中多氯联苯的测定方法。采用索氏提取法提取样品,通过浓硫酸净化、无水硫酸钠脱水、浓缩后,用气相色谱-ECD进行测定。并对索氏提取的不同条件进行系统比较,优化实验条件。方法的检出限为0.5 μg/kg,回收率为78%～86%,相对标准偏差小于7%。 |
| 关 键 词： | 索氏提取法 气相色谱-ECD 食品纸包装材料 多氯联苯 |
Determination of polychlorobiphenyls in paper-made food packaging containers and materials by soxlet's extraction-GC-ECD |
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| Guo Limin,Bai Yankun,Li Qiang,Zhang Yan,Li Hui,Jia Yingmin.Determination of polychlorobiphenyls in paper-made food packaging containers and materials by soxlet's extraction-GC-ECD[J].Modern Instruments,2009,15(6). | |
| Authors: | Guo Limin Bai Yankun Li Qiang Zhang Yan Li Hui Jia Yingmin |
| Abstract: | A confirmatory method was presented for the determination of polychlorinated biphenyls in paper-made food packaging containers and materials by Soxlet's Extraction-GC-ECD.The PCBs were extracted by soxlet's ex- traction,Purified by sulphuric acid,dehydrated by anhydrous sodium sulfate,concentrated and determined by means of the gas chromatography.Extraction efficiency of soxlet's extraction was studied and the extraction conditions were optimized.The limits of the method,the detection recoveries and RSD were 0.5μg/kg,78%～86% and <7%. |
| Keywords: | Soxlet's extraction GC-ECD Paper-made Food packaging containers and materials Polychlorinated biphenyls |
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