Objective To establish a method for uncertainty evaluation for the determination of polychorinated biphenyls (PCBs) in fish by gas chromatography (GC) with internal standard quantification. Methods According to JJG 1059.1-2012 Measurement uncertainty and results indication, through the establishment of the mathematical model of measurement results, the factors affecting the uncertainty of the experimental process are systematically analyzed. The sources of uncertainty were quantified and synthesized, and finally the key factors affecting the uncertainty of PCBs in fish by GC standard curve method were obtained. Results The key factors affecting the uncertainty of PCBs measurement in fish were standard curve fitting, standard solution preparation, sample repeatability and the addition of internal standard. Conclusion This study provides a more detailed reference basis for the uncertainty analysis of PCBs in aquatic products and is more conducive to the scientific evaluation and wide application of PCBs measurement results.
标题：气相色谱内标法测定鱼肉中多氯联苯不确定度评定
英文标题：Uncertainty analysis for the determination of polychorinated biphenyls in fish by gas chromatography with internal standard quantification
