气相色谱法测定稻米、土壤中啶虫脒和仲丁威的残留量  

Determination of Acetamiprid and Fenobucarb Residues in Rice and Soil by Gas Chromatography

作　　者：谢荔草 孙扬 徐应明 秦旭 王倩 孙约兵 

机构地区：[1]农业部环境保护科研监测所污染防治研究室,农业部产地环境质量重点实验室,天津市农业环境与农产品安全重点实验室,天津300191

出　　处：《农药》2012年第8期592-594,604,共4页Agrochemicals

基　　金：农业部农药残留试验项目(2010P302)

摘　　要：[目的]建立同时测定稻米和土壤中啶虫脒和仲丁威残留量的气相色谱分析方法。[方法]确立了啶虫脒和仲丁威在土壤中的残留测定方法：样品经丙酮-石油醚（体积比1∶2）混合液提取,二氯甲烷萃取,气相色谱仪测定。稻米中的残留测定方法：样品提取后,丙酮-石油醚（体积比4∶6）作为洗脱液,经弗罗里硅土柱净化,气相色谱仪测定。[结果]啶虫脒和仲丁威在土壤中的添加回收率分别为95.76%~102.30%、81.12%~97.21%;变异系数分别为9.98%~12.10%、2.31%~6.28%。在稻米中的添加回收率分别为92.56%~106.50%、86.17%~95.16%;变异系数分别为10.30%~14.20%、4.45%~10.90%。[结论]方法快速、准确,灵敏度高和准确度好,能够满足农药残留分析的要求。A new method was developed for residual analysis of acetamiprid and fenobucarb in soil and rice by gas chromatography（GC）.[Methods] The method of soil was developed that the sample was extracted by acetone and petroleum ether（1∶2,by vol）,extracted by methylene chloride,and concentrated and then determined by GC.The method of rice was developed that after sample was extracted,then used acetone and petroleum ether（4∶6,by vol） as eluent,and cleaned up the extraction using florisil solid-phase extraction column,concentrated and determined by GC.[Results] The results showed that the average recoveries of acetamiprid and fenobucarb in soil ranged from 95.76-102.30% and 81.12-97.21%,and the coefficient of variation from 9.98-12.10% and 2.31-6.28%,respectively.The average recoveries of acetamiprid and fenobucarb in rice ranged from 92.56-106.50% and 86.17-95.16%,the coefficient of variation from 10.30-14.20% and 4.45-10.90%.[Conclusions] The method was rapid,accurate,and had high sensitivity and accuracy,it could satisfy the demand of pesticide residue analysis.

关 键 词：啶虫脒 仲丁威 稻米 土壤 气相色谱法 

分 类 号：TQ450.26[化学工程—农药化工]