摘要
[目的]为建立乙草胺、莠去津、2,4-滴丁酯在玉米植株和籽粒中的残留分析方法,采用丙酮和乙酸乙酯混合溶剂提取,凝胶色谱仪净化,气相色谱电子捕获检测器检测。[结果]乙草胺最小检出量为1.0×10-12 g,最低检出质量分数为0.005 mg/kg,平均回收率在80.3%～108.5%之间,相对标准偏差均小于10%;莠去津最小检出量为1.0×10-12 g,最低检出质量分数为0.01 mg/kg,平均回收率在86.3%～112.4%之间,相对标准偏差均小于14%;2,4-滴丁酯最小检出量为1.0×10-12 g,最低检出质量分数为0.002 mg/kg,2,4-滴丁酯回收率为78.0%～108.0%,相对标准偏差均小于14%。[结论]方法具有简便、准确的特点,符合残留分析要求。
A method was established for determining acetochlor,atrazine and 2,4-D butylate residues in maize plants and maize kernel.Residues were extracted by a mixture of acetone and ethyl acetate,purified by GPC and determined by GC with μECD-detector.[Results]The least ammount of acetochlor detected was 1.0×10-12 g.The LOD in maize was 0.005 mg/kg.The average recovery rates ranged from 80.3 to 108.5% with variation coefficient less than 10%.The least ammount of atrazine detected was 1.0×10-12 g.The LOD in maize was 0.01 mg/kg.The recovery rates ranged from 86.3 to 112.4% with variation coefficient less than 14%.The least ammount of 2,4-D butylate detected was 1.0×10-12 g.The LOD in maize was 0.002 mg/kg.The recovery rates ranged from 78.0 to 108.0% with variation coefficient less than 14%.[Conclusions]The method was precise and simple in accordance with the demand of residues determination.
出处
《农药》
CAS
北大核心
2011年第8期582-584,共3页
Agrochemicals
关键词
乙草胺
莠去津
2
4-滴丁酯
残留
玉米
气相色谱分析
acetochlor
atrazine
2
4-D butylate
residue
maize
gac chromatographic analysis
