THE RUDOLF REPORT

7. ZYKLON B FOR THE KILLING OF HUMAN BEINGSc(HCN) [Vol.-%]0.80.70.60.50.40.30.20.10chamber filled with clothesempty chamber0 4 8 12 16 20 24time [h]Graph 13: Hydrogen cyanide concentration behavior indisinfestation chamber with and without clothesat room temperature. 409points show different concentrations peaks, this indicates a non-evendistribution of the products in the chamber. For the sake of clarity, onlythe concentration behavior in the center of the room is reproduced inGraph 12.The loss of hydrogen cyanide as a function of temperature in a disinfestationchamber can be seen in Graph 14. The higher losses atlower temperatures is caused by a higher moisture content in thegassed material and in the walls of the observed room. 123According to the already quoted publication by Schwarz et al., 409their measurements were made in the range of room temperature. Althoughthe interesting part of Graph 13 is only poorly resolved, it isnevertheless clear that under these circumstances the maximum concentrationis reached as late as 4 to 5 hours after the start. In thesec(HCN) [Vol.-%]0 60 time [h] 120 180 240Upper curve: Ideal concentration behavior without Adsorption losses.Center curve: Normal concentration behavior in a w a r m chamber.Lower curve: Normal concentration behavior in a c o l d chamber.Graph 14: Relation between hydrogen cyanide adsorption on clothing andtemperature in a delousing chamber with circulating air system (schematic). 123217