Determination Of Twelve Kinds Of Volatile Disinfection Byproducts In Drinking Water By Gas Chromatography With Electron Capture Detector

A method for simultaneous determination of 12 kinds of chlorinated disinfection byproducts (DBPs) in drinking water was developed based on liquid. liquid extraction gas chromatography equipped with electron capture detector (GC/ECD). The procedural standard calibration was adopted to eliminate the interference of different matrix. The method detection limits for 12 DBPs were 0.08-0.21 mu g/L and the entire analytical procedure was finished in 21.50 min. The recoveries were in the range of 80.9% -115.7% and the relative standard deviations (RSD) were between 0.9% and 9.9% at different concentration levels (5 and 50 mu g/L) in tap water and surface water. The correlation coefficients for all 12 kinds of DBPs were greater than 0.99 in the linearity range of 0.5-200 mu g/L. The method was applied to determine DBPs in drinking water and source water. This method was rapid and competent for detection of volatile DBPs in drinking water.