FILTER ELEMENTS FOR THE PROTECTION AGAINST PERSISTENT AND NON PERSISTENT CHEMICAL WARFARE AGENTS

摘要

The present invention explores a filter element composed of a few layers of the impregnated activated charcoal cloth containing metal impregnant like copper (11), Molybdenum (VI) and silver (1) that neutralizes the chemical warfare gases like hydrogen cyanide and cyanogen bromide and adsorbs nerve and blister agents. The impregnated charcoal cloth was prepared by spraying incipient amount of aqueous solutions containing respective amounts of metal impregnants. The filter element can provide respiratory protection against hydrogen cyanide for 25 minutes, against nerve and blister agents for 10 minutes and against blood agent like cyanogen bromide for 10 minutes (@ 100 ppm and 370mL/min flow rate).