Description:Fats, Food products, Polychlorinated biphenyls, Pesticides, Chemical analysis and testing, Determination of content, Contaminant determination (food), Food testing, Gas chromatography, Thin-layer chromatography, Liquid chromatography, Column chromatography, Chromatography, Separation methods (chemical analysis), Mass spectrometry, Quantitative analysis, Accuracy, Specimen preparation, Test equipment, Testing conditions, Bibliography