| 固相萃取－气相色谱法同时检测茶叶中多种农药和多氯联苯残留 |
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| 引用本文： | 吴林,吴晓波,张承聪,马莉莉,林诗云,鲁广秋,唐娜. 固相萃取－气相色谱法同时检测茶叶中多种农药和多氯联苯残留[J]. 食品科学, 2011, 32(14): 223-226. DOI: 10.7506/spkx1002-6630-201114047 |
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| 作者姓名： | 吴林 吴晓波 张承聪 马莉莉 林诗云 鲁广秋 唐娜 |
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| 作者单位： | 1.云南省农药检定所2.云南大学化学科学与工程学院 |
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| 基金项目： | 云南省农药检定所农药分析研究项目 |
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| 摘 要： | 建立茶叶中21种有机氯、拟除虫菊酯类农药和多氯联苯(polychlorinated biphenyls，PCBs)残留固相萃取(solid-phase extraction，SPE)-气相色谱分析方法。用正己烷-丙酮(1:1，V/V)提取，经Envi-Carb/NH2复合固相萃取柱净化，采用RTX-5毛细管柱分离，气相色谱-电子捕获检测器(gas chromatography-electron caputure detector，GC-ECD)检测。在0.02、0.05、0.3mg/kg三个添加水平，平均回收率为68.64%～125.62%，相对标准偏差(relative standard deviation，RSD)为1.05%～12.78%，该方法的检测限(detection of limit，LOD)在0.0022～0.0129mg/kg之间，适用于茶叶试样中痕量残留的分析。
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| 关 键 词： | 气相色谱-电子捕获检测器 茶叶 农药 多氯联苯 固相萃取 |
Multiresidue Determination of Pesticides and Polychlorinated Biphenyls in Tea by Solid-phase Extraction and Gas Chromatography |
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| WU Lin,,WU Xiao-bo,ZHANG Cheng-cong,MA Li-li,LIN Shi-yun,LU Guang-qiu,TANG Na. Multiresidue Determination of Pesticides and Polychlorinated Biphenyls in Tea by Solid-phase Extraction and Gas Chromatography[J]. Food Science, 2011, 32(14): 223-226. DOI: 10.7506/spkx1002-6630-201114047 |
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| Authors: | WU Lin WU Xiao-bo ZHANG Cheng-cong MA Li-li LIN Shi-yun LU Guang-qiu TANG Na |
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| Affiliation: | (1. Agrichemical Examination Section of Yunnan, Kunming 650034, China；2. College of Chemical science and Engineering, Yunnan University, Kunming 650091, China) |
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| Abstract: | A solid-phase extraction and gas chromatographic method was established to simultaneously determine 21 organochlorines,pyrethroids and polychlorinated biphenyls(PCBs) in tea.Tea samples were extracted with hexane-acetone(1:1,V/V) in an ultrasonic bath and cleaned up on an Envi-Carb/NH2 SPE column.The analytes were separated on a RTX-5 capillary column and detected in 63Ni-ECD(electron capture detector).The recoveries for the analytes were from 68.64% to 125.62% with a relative standard deviation(RSD) from 1... |
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| Keywords: | tea pesticides polychlorinated biphenyls(PCBs) solid-phase extraction(SPE) gas chromatography-electron caputure detector(GC-ECD) |
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