|Document ID (ISN)||54677|
|ISSN - Serial title
||0019-8366 - Industrial Health
|Convention or series no.
||Tanaka S., Abuku s., Imaizumi K., Ishizuka H., Seki Y., Imamiya S.
||Efficiency of respirator canisters with methyl bromide
||Dec. 1989, Vol.27, No.3, p.111-120. Illus. 13 ref.
||Two kinds of respirator canisters, an organic vapour (OV) canister containing activated carbon and a methyl bromide (MB) canister containing activated carbon impregnated with triethylenediamine were investigated for their ability to retain MB gas under various conditions of MB concentration, humidity and temperature. At lower MB concentrations, the breakthrough time of the OV canister was shorter than that of the MB canister and decreased with an increase in temperature, remaining unchanged for the MB canister. Examination of the desorption and the residual adsorption capacity for MB gas showed that more than 5ppm of MB gas leaked from 11 out of 18 used OV canisters, whereas less than 0.1ppm MB leaked out from each of the used MB canisters. The mean remaining breakthrough time of the used OV canisters was 9.3min. whereas that of the used MB canisters was 74.4min. It was shown that the gas masks with the OV canisters were not suitable for fumigating with MB gas.
||air purifying respirators; triethylenediamine; sorbent filters; methyl bromide; personal protective equipment; fumigation
||D - Periodical articles
|Country / State or Province||Japan|
|Broad subject area(s)