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Volume 26 Issue 3
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Article Navigation >  Journal of Pharmaceutical Practice and Service  > 2008  >  (3): 194-196

WANG Tao, CHAI Yi-feng, FAN Guo-rong, MI He-ming. Determination of dichlorovos residue in rice by microwave-assisted extraction/HPLC[J]. Journal of Pharmaceutical Practice and Service, 2008, (3): 194-196.
Citation: WANG Tao, CHAI Yi-feng, FAN Guo-rong, MI He-ming. Determination of dichlorovos residue in rice by microwave-assisted extraction/HPLC[J]. Journal of Pharmaceutical Practice and Service, 2008, (3): 194-196.
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Determination of dichlorovos residue in rice by microwave-assisted extraction/HPLC

  • Department of Pharmaceutical Analysis,School of Pharmacy,Second Military Medical University,Shanghai 200433,China

  • Received Date: 2007-11-05
  • Objective: To develop a method of microwave-assisted extraction（MAE）followed by HPLC for the determination of the residue of dichlorovos in rice. Methods: Pesticide residues were extracted from rice samples with a solvent mixture.Extracts were cleaned up with a column filled with Florisil and neutral aluminum oxide.Nova-Pak C18 column（4 μm,3.9×150 mm）was used with acetonitrile:water（3070,V/V）solution as mobile phase,and the flow speed was 1.0mL/min.The ultraviolet detection wavelength was 200nm. Results: Good linear correlation for dichlorovos was found in the concentration range of 2.00-25.00 μg/mL.The detection limit was 0.5 μg/mL for dichlorovos（S/N=3）.The average recovery rate of rice hull and brown rice were 81.1%（RSD3.9%） and 78.9%（RSD4.0%）,respectively. Conclusion: This method is simple and rapid.It can be used for the determination of dichlorovos residue in rice with satisfactory results.
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    Created with Highcharts 5.0.7Chart context menuAccess Area Distribution其他: 25.2 %其他: 25.2 %China: 0.4 %China: 0.4 %[]: 0.2 %[]: 0.2 %上海: 2.4 %上海: 2.4 %北京: 13.1 %北京: 13.1 %南京: 0.2 %南京: 0.2 %南昌: 0.2 %南昌: 0.2 %厦门: 0.2 %厦门: 0.2 %天津: 0.6 %天津: 0.6 %宜春: 0.2 %宜春: 0.2 %广元: 0.2 %广元: 0.2 %广州: 0.2 %广州: 0.2 %廊坊: 0.2 %廊坊: 0.2 %张家口: 0.2 %张家口: 0.2 %成都: 1.0 %成都: 1.0 %杭州: 0.8 %杭州: 0.8 %枣庄: 0.2 %枣庄: 0.2 %洛杉矶: 0.4 %洛杉矶: 0.4 %洛阳: 0.4 %洛阳: 0.4 %深圳: 0.4 %深圳: 0.4 %温哥华: 0.2 %温哥华: 0.2 %眉山: 0.4 %眉山: 0.4 %石家庄: 0.6 %石家庄: 0.6 %芒廷维尤: 22.4 %芒廷维尤: 22.4 %芝加哥: 0.2 %芝加哥: 0.2 %衢州: 0.2 %衢州: 0.2 %西宁: 26.6 %西宁: 26.6 %郑州: 0.6 %郑州: 0.6 %重庆: 0.2 %重庆: 0.2 %铜仁: 0.2 %铜仁: 0.2 %长沙: 1.0 %长沙: 1.0 %青岛: 0.6 %青岛: 0.6 %香港: 0.2 %香港: 0.2 %其他China[]上海北京南京南昌厦门天津宜春广元广州廊坊张家口成都杭州枣庄洛杉矶洛阳深圳温哥华眉山石家庄芒廷维尤芝加哥衢州西宁郑州重庆铜仁长沙青岛香港Highcharts.com
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Determination of dichlorovos residue in rice by microwave-assisted extraction/HPLC

  • Department of Pharmaceutical Analysis,School of Pharmacy,Second Military Medical University,Shanghai 200433,China
  • Received Date: 2007-11-05

Abstract: Objective: To develop a method of microwave-assisted extraction（MAE）followed by HPLC for the determination of the residue of dichlorovos in rice. Methods: Pesticide residues were extracted from rice samples with a solvent mixture.Extracts were cleaned up with a column filled with Florisil and neutral aluminum oxide.Nova-Pak C18 column（4 μm,3.9×150 mm）was used with acetonitrile:water（3070,V/V）solution as mobile phase,and the flow speed was 1.0mL/min.The ultraviolet detection wavelength was 200nm. Results: Good linear correlation for dichlorovos was found in the concentration range of 2.00-25.00 μg/mL.The detection limit was 0.5 μg/mL for dichlorovos（S/N=3）.The average recovery rate of rice hull and brown rice were 81.1%（RSD3.9%） and 78.9%（RSD4.0%）,respectively. Conclusion: This method is simple and rapid.It can be used for the determination of dichlorovos residue in rice with satisfactory results.

WANG Tao, CHAI Yi-feng, FAN Guo-rong, MI He-ming. Determination of dichlorovos residue in rice by microwave-assisted extraction/HPLC[J]. Journal of Pharmaceutical Practice and Service, 2008, (3): 194-196.
Citation: WANG Tao, CHAI Yi-feng, FAN Guo-rong, MI He-ming. Determination of dichlorovos residue in rice by microwave-assisted extraction/HPLC[J]. Journal of Pharmaceutical Practice and Service, 2008, (3): 194-196.
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