气相色谱法测定人参中十六种有机氯含量的不确定度评定

Evaluation of uncertainty in determination of 16 organochlorine in Ginseng

目的对气相色谱法测定人参中十六种有机氯农药残留的方法进行不确定度评定。方法按照《中国药典》2015年版第一增补本人参项下有机氯类农药残留量的测定方法,对人参禁用的十六种有机氯农药进行检测,根据JJF 1059.1—2012《测量不确定度评定与表示》中有关规定,建立了不确定度评定的数学模型,对实验过程中不确定来源进行分析,并对评定过程中应注意的一些问题进行初步探讨。结果该研究测定过程所产生的测量不确定度主要来源于回收率和重复性试验,其他因素影响很小,在实验过程中应给予格外重视并加以控制。结论本评估方法可为气相色谱法检测多组分农药残留量的不确定度评估提供依据。

Objective To evaluate the uncertainty of determination of 16 organochlorine pesticide residues in ginseng by gas chromatography.Methods Method for determination of organochlorine pesticide residues in ginseng according to the first supplement of《Chinese pharmacopoeia》 2015 edition,sixteen organochlorine pesticides banned in ginseng were tested,according to JJF 1059.1-2012《measurement uncertainty evaluation and representation》of relevant pro visions,the mathematical model of uncertainty evaluation is established,the uncertain sources in the experiment were analyzed,some problems that should be paid attention to in the evaluation process are discussed.Result In this study,the measurement uncertainty resulted from the recovery and repeatability test,Other factors have little influence,so we should pay more attention to them and control them.Conclusion This method can be used to evaluate the uncertainty of multi-component pesticide residues by gas chromatography.