毛豆中腈菌唑残留量的气相色谱法测定  

Determination of Myclobutanil Residues in Glycine max by Gas Chromatography

作　　者：陈丽萍[1] 林志平 

机构地区：[1]福建省漳州市农业检验监测中心,福建漳州363000 [2]漳州市植物检疫监测中心,福建漳州363000

出　　处：《亚热带植物科学》2006年第3期48-50,共3页Subtropical Plant Science

基　　金：漳州市科技计划项目(Z03028)

摘　　要：采用气相色谱法定量分析毛豆上腈菌唑的微量残留量。样品经乙腈提取,液液分配,中性氧化铝柱层析净化后,以气相色谱电子俘获检测器法(GC-ECD)测定,DB-1701毛细管柱、氮气为载气,柱温150℃20℃/min 260℃(10min),气化室温度240℃,检测器温度300℃,外标法定量。该方法快速、准确,在0.05～2.00mg/L范围内线性相关系数r2=0.9998,平均回收率91.1%～99.0%,变异系数1.22%～2.94%,最小检测量1.0×10-12g,最低检出浓度5.0×10-4mg/kg。A method for determination of myclobutanil residues in Glycine max by gas chromatography was described. Samples were extracted with acetonitrile, followed by liquid-liquid partition and purified by neutral aluminum oxide column. The myclobutanil residues were analyzed by GC-ECD with a DB-1701 capillary column using N2 as the cartier gas at a column temperature of 260℃ with an extensive standard, vaporizing chamber temperature of 240℃ and detector temperature of 300℃. The results showed that the method was quick and accurate with a good linear relative coefficient of 0.9998 in the range of 0.05-2.00mg/L, average recoveries of 91.1%-99.0%, a variation coefficient of 1.22%-2.94%, a limit of detection of 1.0 - 10^-12g, and a minimum determination concentration of 5.0 × 10^4mg/kg.

关 键 词：腈菌唑 残留 毛豆 气相色谱法 

分 类 号：S643[农业科学—蔬菜学]