[Evaluation of exposure level in the handling of explosives]

For the clarification of a supposed case of poisening by handling of explosives containing nitric acid ester in a man who was an expert in performing explosions the proof of the exposition was necessary. By the determination of free nitrite in the blood as well as by measuring of blood pressure and pulse in persons exposed in the same way the intake of nitrated constituents of the explosive could be made clear. The advantage of the determination of free nitrite in the blood in contrast to the determination of the met-Hb is discussed. It is referred to an additional potential endangering by gun fumes and the measures for the protection of labour which are to be derived from this.