气相色谱法测定人参中有机氯含量的不确定度评定

Uncertainty evaluation of determination of organochlorine content in Ginseng by gas chromatography

目的:用气相色谱法对人参中主要十六种有机氯农药残留含量的测量不确定度评定。方法:结合人参中有机氯农药的实验方法,对人参禁用的十六种有机氯农药进行检测,建立数学模型,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。结论:结果表明,人参在进行有机氯农残十六种检测分析时,样品的重复测量和回收率是影响测量结果不确定度的主要来源,在实验过程中应给予格外重视并加以控制。

Objective：To evaluate the uncertainty of measurement of sixteen main residues of organochlorine pesticides in Ginseng by gas chromatography.Methods：to test the sixteen organochlorine pesticides banned by ginseng,establish a mathematical model,analyze the uncertain sources in the experiment,and discuss some problems that should be paid attention to in the process of evaluation.Conclusion：the results show that the repeated measurement and recovery of the samples are the main factors affecting the uncertainty of the results of the sixteen detection and analysis of organochlorine pesticide residues,and should be given special attention and control during the experiment.