Abstract
A gas chromatographic method is described for the direct determination of N,N-dimethylcarbamoyl chloride (DMCC) in air samples. DMCC is adsorbed on Tenax® packing in the presence of other components, flush-desorbed at 300°C, and detected with a Hall electrolytic chlorine-sensitive detector. The method was calibrated with static and dynamic standards, and both approaches are discussed. Various experimental conditions show that the recovery yields are excellent and the method is very reproducible. DMCC levels up to 0.05 parts per billion (v/v) can be detected in the atmosphere of industrial plants when a sampling volume of 48 liters is used. The approach can be easily adapted to monitoring personnel or sites, if desired.