50%氟吗啉可湿性粉剂在烟草及土壤中的残留分析  

Residue Analysis of Flumorph 50% WP in Tobacco and Soil

作　　者：闫小军[1] 龚道新[1,2] 刘少平[1] 苏循发[1] 项裕昆[1] 何宗桃[1] 

机构地区：[1]湖南农业大学烟草工程技术研究中心,长沙410128 [2]湖南农业大学农业环境保护研究所,长沙410128

出　　处：《农药》2010年第4期275-276,289,共3页Agrochemicals

摘　　要：采用反相高效液相色谱法对烟草及土壤中氟吗啉进行残留量分析。样品采用丙酮提取,乙酸乙酯-正己烷(体积比1:1)萃取,Florisil层析柱净化,紫外检测器(UVD)测定,检测波长为242nm,流动相为甲醇-水(体积比60:40)。实验结果表明:氟吗啉的最低检出限为6.2×10-10g,在烟叶中的平均回收率为95.88%～97.06%,相对标准偏差3.05%～4.14%;在土壤中的平均回收率为93.38%～95.12%,相对标准偏差2.67%～4.13%。The residues of flumorph in tobacco leaves and soil were analyzed by using high performance liquid chromatography. The samples were distilled by acetone, and further extracted with ethyl acetate-hexane（1：1, by vol）by using UV detector at 242 nm, the extract was cleaned-up with florisil cartridge. The liquid phase was methanol-water（60：40, by vol）. The analytical results showed that the detection limit was 6.2×10-10 g under the conditon of this method, the recovery ratios of flumorph in tobacco was 95.88-97.06% and the relative standard deviations was 3.05-4.14%; the recovery ratios of flumorph in soil was 93.38-95.12% and the relative standard deviations was 2.67-4.13%.

关 键 词：烟草 土壤 高效液相色谱 氟吗啉 残留分析 

分 类 号：TQ450.263[化学工程—农药化工]