Determination of Dichloromethane in Waste Water Using Headspace Gas Chromatography

摘要

A method for the detection of dichloromethane (DCM) in waste water was developed by using head-space gas chromatography with FID detection. The calibration curve was linear in three orders of magnitude range of DCM levels and the linear correlation coefficient was 0.9995. The limit of detection was 0.004 mg/l and the limit of quantitation was 0.01 mg/l. The system and method precision were both accord with the requirement. The method, practiced in the quantitative determination of DCM in waste water, solved many problems as such and high water content in sample. Many impurities which impacted the detection of DCM were separated visibly.