Determination Of37Kinds Of Organic Pollutants In Groundwater Samples By Gas Chromatography-mass Spectrometry

To find out current status of groundwater quality and its pollution, and to protectnational security of water supply, ecological security and food security, ChinaGeological Survey Bureau organized first groundwater pollution investigation,groundwater pollution received wide attention as the focus of the investigation, whichalso put a higher demand for organic analytical techniques. Gas mass spectrometerwas used as a new generation of organic analytical equipment, it has become theprotagonist of the organic analysis, it will improve the detection accuracy andprecision, at the same time, because of its high sensitivity characteristics, especially inthe qualitative aspects of the compounds advantages, it fully meets the needs oforganic contaminants detected in the groundwater under the survey project technicalrequirements.Gas chromatography mass spectrometry (GC-MS) with wide measuring range,fast analysis speed, repeatability and accuracy, has been widely used in the analysis oforganic contamination. Through the study on the gas chromatography massspectrometry, corresponding analysis methods were established and compoundmeasurement conditions were matched. The results of drinking groundwater detectionshowed that the gas mass spectrometry measurements are accurate and the indicatorshave reached the relevant regulatory requirements. The method with detecting widefield, good stability, short analysis time, strong anti-interference ability could apply toanalyze the groundwater samples and the other samples (water, soil, waste and so on)to provide reference of related components. This method has been applied to theSongnen Plain (Heilongjiang) analysis of organic pollutants in groundwater pollutioninvestigation project sample with accurate and reliable data.