The details of a new method for monitoring and analyzing personnel exposures to hydrazines (302012), which are potential carcinogens, at a rocket propellant plant are reported. The 35 liter samples were collected from inside the respiratory protective equipment worn by the worker, and the trapped hydrazines were extracted and measured by gas-chromatography (GC). A field laboratory was located at the sampling site because it was found imperative to run analyses immediately after sample collections. This method was found to be adequate within the limits imposed by the degree of analytical sensitivity.
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