| 加速溶剂萃取用于贝类中多氯联苯的提取 |
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| 引用本文： | 周琳,陈大舟,沈燕华,李蕾.加速溶剂萃取用于贝类中多氯联苯的提取[J].北京化工大学学报(自然科学版),2005,32(5):106-109. |
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| 作者姓名： | 周琳 陈大舟 沈燕华 李蕾 |
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| 作者单位： | 北京化工大学理学院,北京,100029;国家标准物质研究中心,北京,100013 |
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| 摘 要： | 针对分析贝类中痕量多氯联苯（PCBs），采用加速溶剂萃取提取其中的7种PCBs（PCB28，PCB52，PCB101，PCB118，PCB153，PCB138，PCB180），讨论了温度和循环次数对加速溶剂萃取提取效率的影响，并采用凝胶渗透色谱（GPC）和Florisil土填充的固相萃取（SPE）小柱联用净化，去除脂肪和其他杂质，通过GC-ECD分析得到回收率数据。结果表明加速溶剂萃取用于贝类中PCBs的提取，最佳温度条件为100℃，最佳循环次数为2次。采用此种前处理方法的回收率和重复性均较好，具有良好的应用价值。
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| 关 键 词： | 加速溶剂萃取 凝胶渗透色谱 固相萃取 GC-ECD 多氯联苯 贝类 |
| 收稿时间： | 2004-12-02 |
| 修稿时间： | 2004年12月2日 |
Extraction of PCBs in shellfish by accelerated solvent extraction |
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| ZHOU Lin,CHEN Da-zhou,SHEN Yan-hua,LI Lei.Extraction of PCBs in shellfish by accelerated solvent extraction[J].Journal of Beijing University of Chemical Technology,2005,32(5):106-109. |
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| Authors: | ZHOU Lin CHEN Da-zhou SHEN Yan-hua LI Lei |
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| Institution: | 1. College of Science, Beijing University of Chemical Technology, Beijing 100029; 2. National Research Center For CRM'S, Beijing 100013, China |
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| Abstract: | In order to determine trace polychlorinated biphenyls(PCBs) in shellfish, accelerated solvent extraction(ASE) was used to extract seven PCBs(PCB28,PCB52,PCB101,PCB118,PCB153,PCB138,PCB180) in shellfish. The influence of the extraction temperature and the cycle times on the extraction efficiency of ASE were studied. And the co-cleanup of GPC and SPE(Florisil column) was used to eliminate the fat and other impurities. Finally, GC-ECD was used to get the recovery rate of the sample. The results indicated that the optimum extraction temperature is 100℃ and the optimum cycle times is 2. The recovery rate is higher and its repetition is better by using ASE for pretreatment of shellfish, and it is worthy of using. |
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| Keywords: | accelerated solvent extraction GPC SPE GC-ECD polychlorinated biphenyls shellfish |
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