Variations in Time-To-Incapacitation and Blood Cyanide Values for Rats Exposed toTwo Hydrogen Cyanide Gas Concentrations

摘要

It has been suggested that protective breathing devices protect aircraftpassengers from combustion products for 5 min during evacuation and for 35 min during in-flight-plus-evacuation. Hydrogen cyanide (HCN), a combustion gas, produces incapacitation at relatively low concentrations, and time-to-incapacitation (ti) is an applicable index for predicting escape from a fire. Variations in ti and blood cyanide (CN value) at specific HCN gas exposure concentrations have not been evaluated. Therefore, ti and blood CN value at ti