摘要
[目的]建立一种气相色谱法测定除虫脲中氨基甲酸甲酯杂质的分析方法。[方法]试样用乙腈溶解,采用DM-624毛细管柱和FID火焰离子化检测器,外标定量测定试样中氨基甲酸甲酯的含量。[结果]氨基甲酸甲酯在0.0080~0.0796 g/L范围内线性良好,相关系数为0.9969,相对标准偏差为1.62%,平均回收率为102.0%。[结论]该方法操作简便、分离效果好、精密度和准确度高,适用于除虫脲中氨基甲酸甲酯的定量分析。
[Aims] To establish a gas chromatographic method for the determination of methyl carbamate impurity in diflubenzuron. [Methods] The samples were dissolved in acetonitril, and the content of methyl carbamate in the samples was quantitatively determined with external standard by DM-624 capillary column and FID flame ionization detector. [Results] The linear range was 0.0080-0.0796 g/L. The linear correlation coefficient of methyl carbamate was0.9969, the relative standard deviation was 1.62%, and the average recoveries were 102.0%. [Conclusions] The method is easy to operate, has good separation effect, high precision and accuracy, and is suitable for the quantitative determination of methyl carbamate in diflubenzuron.
作者
杨锦蓉
张丽荣
齐建敏
YANG Jin-rong;ZHANG Li-rong;QI Jian-min(Hebei Veyong Bio-chemical Co.,Ltd.,Shijiazhuang 052165,China)
出处
《农药》
CAS
CSCD
北大核心
2021年第8期576-577,共2页
Agrochemicals
