Determination of Twelve Kinds of Volatile Disinfection Byproducts in Drinking Water by Gas Chromatography with Electron Capture Detector / 分析化学

ABSTRACT

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 μg/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 μg/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 μg/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.