Critical evaluation of continuous monitors for toluene diisocyanate

This paper describes the experiments and the results of an exhaustive and critical laboratory study which evaluated the performance of continuous area and personal monitors popularly used in measuring the concentrations of TDI in industrial environments. The studies consisted of dynamic calibrations, the effect of humidity and temperature on the measurements, and the interferences due to commonly encountered contaminants in a TDI manufacturing plant. The response and resolution of the personal monitor for short-term fluctuations of TDI concentration in time and space are also reported.