气相色谱法快速测定菜心中3种有机磷农药残留  

Rapid Determination of 3 Organophosphorus Pesticides Residue in Flowering Chinese Cabbage by Using Gas Chromatography

作　　者：杨娟 吴星祥 黎小鹏 陈楠 马世柱 冯敏铃 

机构地区：[1]广东省佛山市三水区农产品质量安全检测中心,广东佛山528100 [2]中山市三乡镇农产品检验检测站 [3]中山市农产品质量监督检验所

出　　处：《现代农业科技》2016年第5期140-140,144,共2页Modern Agricultural Science and Technology

基　　金：中山市科技计划项目(2015B2350)

摘　　要：建立了菜心中甲拌磷、水胺硫磷和丙溴磷3种有机磷农药的气相色谱快速测定方法。菜心样品经乙腈提取,选用DB-1701P（30 m×0.250 mm×0.25μm）毛细管柱色谱分离,FPD检测器检测。结果表明院3种有机磷农药在50～1 000 ng/L浓度范围内,均有良好的线性关系,相关系数不低于0.999 9,在14 min内完全分离;3种有机磷农药的加标回收率为81.1%～107.6%,相对标准偏差在（n=7）3.4%~9.8%之间。该方法适于菜心中3种有机磷农残的快速检测。A gas chromatography method was developed for the rapid determination of 3 organophosphorus pesticides residues,including phorate,isocarbophos and profenofos in flowering Chinese cabbage sample. The samples were extracted with acctoneitrile,then separated in a DB- 1701P （30 m×0.250 mm×0.25 μm）capillary column and detected with flame photometric detector （FPD）. The results showed that the 3 organophosphorus pesticide＇s linearity were good ,their correlation coefficients not less than 0.999 9 in range of 50-1 0130 ng/L and they could be separated within the 14 min ;at the same time that the 3 organophosphorus pesticide＇s spiked recoveries ranged from 81.1% to 107.6% with RSD＇s （n=7）in the range of 3.4%-9.8%. The proposed method was suitable for fast detecting 3 organophosphorus pesticide in flowering Chinese cabbage.

关 键 词：气相色谱法 菜心 有机磷农药 残留量 

分 类 号：X839.2[环境科学与工程—环境工程] O657.71[理学—分析化学]