title: Non-carcinogenic carbon sorbents for respiratory protection.
abstract: Activated carbons impregnated with compounds of chromium, copper and silver (Cr-Cu-Ag) are widely used for removing toxic substances from air, mainly in respiratory protection for industrial and military applications. Toxicological and epidemiological studies have shown chromium (especially hexavalent Cr) to have carcinogenic properties. Hence, research has been launched to develop a new adsorption-catalytic complex without chromium, which is intended to replace the activated carbon-catalyst (Cr-Cu-Ag) system. In this work activated carbon obtained from plum stones as carrier and molybdenum, copper and silver salts as impregnates were studied. The porous structure of the carbon carrier was investigated using low temperature nitrogen adsorption. Cyanogen chloride breakthrough dynamics was analyzed in order to characterize the protection properties. Studies on the substitution of chromium by non-carcinogenic metals will be continued.
authors.affiliation: Military Institute of Chemistry and Radiometry, 00-910 Warsaw, Poland.
authors.forename: Radoslaw
authors.initials: R
authors.lastname: Szmigielski
authors.forename: Stefan
authors.initials: S
authors.lastname: Zietek
authors.forename: Andrzej
authors.initials: A
authors.lastname: Swiatkowski
authors.forename: Dorota
authors.initials: D
authors.lastname: Palijczuk
authors.forename: Marek
authors.initials: M
authors.lastname: Kielczewski