title: [Evaluation of the degree of protection provided by a cartridge-mask system during working with asbestos].
abstract: During removal of sprayed-on asbestos coating workers are exposed to high airborne fiber concentrations. The true protection of negative pressure respirators under working conditions was evaluated during an asbestos abatement project. A modification allowing air sampling inside the mask is described. The values for samples collected inside a full-face mask ranged between 0.4 and 5% of the concentrations measured outside. These values were considerably lower than those found inside a half-mask.
mesh_terms: D001194:Asbestos / Q000009:adverse effects* / Q000032:analysis; D005069:Evaluation Studies as Topic; D006801:Humans; D008397:Masks / Q000592:standards; D008452:Maximum Allowable Concentration; D011482:Protective Devices / Q000592:standards*; D012134:Respiratory Protective Devices / Q000592:standards*
chemical_list: D001194:Asbestos
vernacular_title: Evaluation du degré de protection d'un système masque-cartouche lors d'un travail avec de l'amiante.