| 烟草中有机氯类农药多残留分析前处理方法对比研究 |
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| 引用本文： | 石杰,刘婷,刘惠民,胡斌,杨静.烟草中有机氯类农药多残留分析前处理方法对比研究[J].分析试验室,2010,29(2). |
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| 作者姓名： | 石杰 刘婷 刘惠民 胡斌 杨静 |
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| 作者单位： | 1. 郑州大学化学系,郑州,450052
2. 郑州烟草研究院,郑州,450052 |
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| 基金项目： | 河南省科技攻关(0496430006);;河南省教育厅自然科学基础研究(2004150001)项目资助 |
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| 摘 要： | 以烟草中有机氯类农药为研究对象,从检出限、回收率、重复性和色谱图4个方面系统比较了机械振荡萃取法、超声波溶剂萃取法、微波辅助萃取法和加速溶剂萃取法4种常用前处理方法。由于加速溶剂萃取法是在高温高压下进行萃取,在提取出残留农药的同时,也提取出更多的干扰物。机械振荡法、超声波溶剂萃取法和微波辅助萃取法各项结果差别较小,其中机械振荡萃取法回收率和重复性最好,但提取时间较长。考虑溶剂消耗和提取时间等方面的因素,微波辅助萃取是较理想的样品前处理方法。
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| 关 键 词： | 烟草 有机氯类农药 机械振荡萃取 超声波溶剂萃取 微波辅助萃取 加速溶剂萃取 |
Comparison of different extraction methods for the determination of organochlorine pesticides in tobacco |
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| SHI Jie,LIU Ting,LIU Hui-min,HU Bin,YANG Jing.Comparison of different extraction methods for the determination of organochlorine pesticides in tobacco[J].Chinese Journal of Analysis Laboratory,2010,29(2). |
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| Authors: | SHI Jie LIU Ting LIU Hui-min HU Bin YANG Jing |
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| Institution: | 1.Department of Chemistry;Zhengzhou University;Zhengzhou 450052;2.Zhengzhou Tobacco Research Institute of CNTC;Zhengzhou 450001 |
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| Abstract: | In the paper,the performances(including limits of detection,recoveries,reproducibilities and chromatograms) of mechanical shaking extraction(MSE),ultrasonic solvent extraction(USE),microwave-assisted extraction(MAE) and accelerated solvent extraction(ASE) for the analysis of organochlorine pesticides in tobacco had been investigated.As a result,ASE had more matrix interferences compared to the other three methods probably because this extraction method held higher extraction temperature and pressure.And the... |
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| Keywords: | Tobacco Organochlorine pesticides Mechanical shaking extraction Ultrasonic solvent extraction Microwave-assisted extraction Accelerated solvent extraction Gas chromatography-electron capture detector |
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