| 鲭鱼罐头中7种多氯联苯的测定——亚临界水萃取-气相色谱法 |
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| 引用本文： | 王婷婷,;李莉,;陈易晖,;徐颖,;聂诚刚,;刘望才,;房江华,;高浩其.鲭鱼罐头中7种多氯联苯的测定——亚临界水萃取-气相色谱法[J].宁波工程学院学报,2014(2):1-6. |
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| 作者姓名： | 王婷婷 ;李莉 ;陈易晖 ;徐颖 ;聂诚刚 ;刘望才 ;房江华 ;高浩其 |
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| 作者单位： | [1]宁波工程学院,浙江宁波315016; [2]象山出入境检验检疫局,浙江象山310014; [3]北仑出入境检验检疫局,浙江北仑315800 |
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| 基金项目： | 浙江省自然科学基金（项目编号LQ12B05001）；宁波市自然科学基金（项目编号2012A610091）；宁波市创新团队（2011B82002）；北仑科技创新基金和2012校立项（项目编号46）。 |
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| 摘 要： | 建立了同时检测鲭鱼罐头中7种多氯联苯(PCBs)的亚临界水萃取-气相色谱分析方法。亚临界水中加入活性炭纤维为固相萃取剂,在200℃的条件下,提取40 min,随后,用2 mL乙酸乙酯洗脱。结果表明,该方法测定PCBs含量的线性范围为0.001~0.100μg/mL;在2.0、10.0、50.0μg/kg(n=6)的添加水平下,回收率在79.4%~91.0%之间,测定结果的相对标准偏差(RSD)为3.1%~12.3%;检出限(S/N=3)为0.016~0.046μg/kg;定量限(S/N=10)为0.048~0.139μg/kg。该方法绿色环保、稳定、可靠,适用于鲭鱼罐头中多氯联苯的检测。
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| 关 键 词： | 亚临界水萃取 气相色谱 多氯联苯 鲭鱼罐头 |
Determination of 7 Polyclalorinated Biophenyls in Canned Mackerel --Sub-critical Water Extraction-gas Chromatography Method |
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| Affiliation: | WANG Ting-ting, LI Li, HEN Yi-hui, XU Ying, NIE Cheng-gang, LIU Wang-cai, FANG Jiang-hua, GAO Hao-qi(1. Ningbo University of Technology, Ningbo, Zhejiang, 315016, China; 2. Xiangshan Entry-Exit Inspection and Quarantine Bureau, Xiangshan, Zhejiang, 310014, China; 3. Beilun Entry-Exit Inspection and Quarantine Bureau, Beilun, Zhejiang, 315800, China) |
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| Abstract: | A method for the simultaneous determination of 7 polychlorinated biophenyls （PCBs） in canned Mackerel by sub-critical water extraction coupled with gas chromatography is developed. PCBs are extracted by 200 ℃ sub-critical water for 40 min, and adsorbed on active carbon fibers at the same time. And then, PCBs are desorbed by 2 mL ethyl acetate. The results show that the linear range for the determination of PCBs in canned Mackerel is between 0.001～0.100 μg/mL with the limit of detection （LOD, S/N=3） of 0.016～0.046 μg/kg and the limit of quantification （LOQ, S/N=10） of 0.048～0.139 μg/kg. At the spiked level of 2.0、10.0、50.0 μg/kg （n=6）, the recoveries range from 79.4% to 91.0% with the relative standard deviations （RSDs） between 3.1% and 12.3%. The developed method is environmentally-friendly and suitable for the simultaneous determination of 7 PCBs in canned Mackerel with high accuracy and high precision. |
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| Keywords: | Sub-critical water extraction gas chromatography （GC） polychlorinated biophenyls （PCBs） canned Mackerel |
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