Research and Development of a Field-Ready Protocol for Sampling of Phosgene from211 Stationary Source Emissions: Diethylamine Reagent Studies

摘要

This report presents the results of laboratory studies to develop and evaluate a211u001emethod for the sampling and analysis of phosgene from stationary sources of air 211u001eemissions using diethylamine (DEA) in toluene as the collection media. The method 211u001eextracts stack gas from emission sources and stabilizes the reactive gas for 211u001esubsequent analysis. DEA was evaluated both in a benchtop study and in a 211u001elaboratory train spiking study. This report includes results for both the 211u001ebenchtop study and the train spiking study. Benchtop studies to evaluate the 211u001esuitability of DEA for collecting and analyzing phosgene investigated five 211u001evariables: storage time, DEA concentration, moisture/pH, phosgene concentration, 211u001eand sample storage temperature. Prototype sampling train studies were performed 211u001eto determine if the benchtop chemical studies were transferable to a Modified 211u001eMethod 5 sampling train collecting phosgene in the presence of clean air mixed 211u001ewith typical stack gas components. Four conditions, which varied the moisture and 211u001ephosgene spike were evaluated in triplicate. In addition to research results, the 211u001ereport includes a detailed draft method for sampling and analysis of phosgene 211u001efrom stationary source emissions.