Determination of Vinyl Chloride Monomer in Wastewater Using Purge and Trap Gas-chromatograph Method

摘要

The analytical conditions of a purge and trap (PT) instrument have been optimized for determination of vinyl chloride monomer (VCM) in wastewater. The optimal purging pressure to purge VCM from wastewater was 10 kPa for a constant time of 10 minute at 30°C purging temperature. The detection limit of VCM in wastewater is 0.5 μg/L. The reproducibility of replicate samples lies within 6.5%. The prominent feature of this method is the cheap cost of VCM standards and samples preparation. The fast and convenient system has been successfully employed for the determination of VCM in wastewater with good resolution and high recoveries.