茶叶中4种菊酯类农药的气相色谱分析方法
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王英健,男教授研究方向为分析化学 E-mail:lnwangyingjian@163.com

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The analytical method of four pesticide residues in the tea samples by gas chromatography
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    摘要:

    建立了茶叶中菊酯类农药残留量的气相色谱分析方法。方法采用丙酮∶石油醚=1∶1(V/V)作为提取剂,石英毛细管柱、电子捕获检测器、外标法定量,分析茶叶中甲氰菊酯、氯氰菊酯、氰戊菊酯、溴氰菊酯农药的残留量。结果甲氰菊酯的回收率为82.7%~101.3%,RSD为2.19%~5.46%;氯氰菊酯的回收率为81.7%~102.5%,RSD为2.11%~5.63%;氰戊菊酯的回收率为85.3%~103.6%,RSD为2.04%~4.29%;溴氰菊酯的回收率为86.1%~102.3%,RSD为1.98%~5.25%。结论气相色谱分析方法准确可靠,适用于市售各种茶叶中菊酯类农药残留量的分析。

    Abstract:

    A method for determining pyrethroid pesticide residue in the tea samples by gas chromatography was established. Methods Benzine-acetone 1∶1 (V/V) was used as the extractant. The quartz capillary vessel column and electron capture detector were used, and an external standard was used for quantification. We analyzed pyrethroid pesticide residues of armor cyanogen chrysanthemum ester, chlorine cyanogen chrysanthemum ester, cyanogen fifth heavenly stem chrysanthemum ester and bromine cyanogen chrysanthemum in tea samples. ResultsThe result indicated that the recoveries of armor cyanogen chrysanthemum ester ranged from 82.7%-101.3% with a RSD of 2.19%-5.46%; the recoveries of chlorine cyanogen chrysanthemum ester ranged from 81.7%-102.5%, with a RSD of 2.11%-5.63%; the recoveries of cyanogen fifth heavenly stem chrysanthemum ester ranged from 85.3%-103.6% with a RSD of 2.04%-4.29%; the recoveries of bromine cyanogen chrysanthemum ester ranged from 86.1%-102.3%, with a RSD of 1.98%-5.25%. Conclusion The method is accurate and reliable, and suitable to analyze all kinds of pyrethroid pesticide residues in tea from the market.

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王英健.茶叶中4种菊酯类农药的气相色谱分析方法[J].中国食品卫生杂志,2013,25(1):29-31.

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  • 收稿日期:2012-06-27
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