Lead, chromium, and cadmium emission factors during abrasive blasting operations by bridge painters.
Conroy LM; Lindsay RM; Sullivan PM
Am Ind Hyg Assoc J 1995 Mar; 56(3):266-271
Emission rates and emission factors were investigated for abrasive blasting of painted steel structures. Emission rates were defined as the mass of lead (7439921), chromium (7440473), or cadmium (7440439) per unit time. Emission factors were defined as mass of lead, chromium, or cadmium per unit surface area blasted. Area sampling was performed during the work of two blasting crews, 8 to 10 hours a day for 9 days during October to December of 1991 and for 8 days during June to November of 1992. Blasting was done at two locations, a bridge in downtown Chicago and the connecting viaduct. On the bridge the lead emission factors ranged from 7,030 to 35,400 milligrams/square meter (mg/m2) and on the viaduct from 4,610 to 28,700mg/m2. Chromium emission factors ranged from 60 to 90mg/m2 on the bridge and 245 to 776mg/m2 on the viaduct. Cadmium emission factors ranged from 12 to 21mg/m2 on the bridge and from 1.0 to 3.0mg/m2 on the viaduct. The emission factors for the viaduct were in closer agreement with validation results, perhaps due to less containment leakage. Wind was more of a factor on the bridge and lowered containment efficiency. Containment efficiencies for lead as measured in this study were from 55% to 95%.
NIOSH-Publication; NIOSH-Grant; Training; Control-technology; Lead-poisoning; Construction-industry; Construction-workers; Sand-blasting; Cadmium-dust; Lead-dust; Dust-exposure
Enzyme Laboratory University of Illinois Eohs (M/c 922), Box 6998 Chicago, IL 60680
7439-92-1; 7440-47-3; 7440-43-9
American Industrial Hygiene Association Journal
University of Illinois at Chicago, Chicago, Illinois