Objective To evaluate the uncertainty for the determination of phosalone in the celery by gas chromatography. Methods The content of phosalone in positive celery was determined by gas chromatography, the whole process of detection and the source of uncertainty were analyzed, and a mathematical model for the uncertainty evaluation of phosalone in vegetables was established by gas chromatography. Results The order affecting the uncertainty of phosalone in the celery was sample constant volume>peak area of standard solution>peak area of sample liquid>preparation process of standard solution>sample weighing, and relative uncertainty of synthetic standard was 3.123%. The concentration of this sample was (0.131±0.008) mg/kg (k=2). Conclusion Selecting the selection of the container dish with higher the accuracy can effectively reduce the uncertainty of measurement.
标题：气相色谱法测定芹菜中伏杀硫磷的不确定度评定
英文标题：Uncertainty evaluation for the determination of phosalone in the celery by gas chromatography
