In order to evaluate the accuracy of analysis of PCB194 and PCB206 in water by gas chromatograms and mass spectrometry,the study researches the samples by gas chromatograms-mass spectrometry,and the distribution of PCB194 and PCB206 in environmental water bodies and the accuracy of analysis through the collection,pretreatment and gas chromatographic analysis of water samples.The results show that the method can effectively detect the content of PCB194 and PCB206 in water with good repeatability and high accuracy,and it can be used for monitoring the pollution of PCBS in water bodies.The study analyzes the main factors affecting the accuracy of analysis,which can provide reference for improving the accuracy of environmental monitoring.
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