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气相色谱法测定糙米中11种有机磷农药残留
引用本文:蓝梦哲. 气相色谱法测定糙米中11种有机磷农药残留[J]. 广东农业科学, 2009, 0(12): 168-170
作者姓名:蓝梦哲
作者单位:广州市农业标准与监测中心,广东,广州,510308
摘    要:建立了测定糙米中有机磷农药残留量的气相色谱分析方法,即样品采用乙腈超声提取、浓缩,采用丙酮定容,应用气相色谱法进行定量分析.测定结果显示:11种有机磷农药的检出限为0.004~0.010 mg/kg;在0.02~0.50 mg/kg加标情况下,11种有机磷农药的平均回收率(n=3)为75.5%~110.1%,相对标准偏差为1.22%~5.00%.该方法具有简单、快速,准确、灵敏、重现性好的特点,适合糙米中有机磷农药残留量的分析.

关 键 词:气相色谱法  糙米  有机磷农药  残留

Determination of 11 organophosphorus pesticide residues in brown rice by Gas Chromatography
LAN Meng-zhe. Determination of 11 organophosphorus pesticide residues in brown rice by Gas Chromatography[J]. Guangdong Agricultural Sciences, 2009, 0(12): 168-170
Authors:LAN Meng-zhe
Affiliation:LAN Meng-zhe(Guangzhou Agriculture Standard and Supervisory Center,Guangzhou 510308,China)
Abstract:A method was developed for detecting eleven organophosphorus pesticides in brown flee. The residues of pesticides were extracted from sampleswith acetonitrile, concentrated and fixed with acetone and detected by gas capillary chromatography with FPD detector. Results showed that the minimum detection limits ranged were 0.004~0.010 mg/kg. When fortified level ranged from 0.02~0.50 mg/kg, the recoveries were found 75.5%~110.1%, with RSD ranged from 1.22% to 5.00% in brown flee. The method was rapid, practical and up to the request of multi-residues determination.
Keywords:GC  brown rice  organophosphorus pesticides  residues
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