Perdeuterated phenanthrene (d-phen) exhibits strong room-temperature phosphorescence (RTP) when adsorbed on Whatman 1PS filter paper. An oxygen sensor was developed that depends on oxygen quenching of RTP intensity of adsorbed d-phen. The system designed employed a continuous flow of nitrogen or nitrogen-air onto the adsorbed phosphor. The sensor is simple to prepare and needs no elaborate fabr...

The environmental resistance of pure iron was evaluated by an oxygen and hydrogen sensor installed after oxidation furnace. amount introduced precisely controlled the pump at front stage furnace, reaction with analyzed. Thus, when supplied, a between occurred; however, supplied not sufficient, hydrogen-vapor environment created, accelerated. Conversely, excessive, became oxygen–steam environmen...