Galvanized metal, when welded, will release cadmium fume (Cd) or zinc oxide fume. Mention of company names and/or products does not constitute endorsement by the National Institute for Occupational Safety and Health. Breathing zone concentrations cannot be determined by area sampling. The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the National Institute for Occupational Safety and Health. Finally, thanks to Damon Carl for his manuscript review. Thanks to Deborah Sammons (NIOSH), Kit Peregrine, and Adam Redman (HRG) for their field expertise. and Heritage Research Group (HRG), appreciate the involvement of Milestone Contractors LP (the asphalt paving and concrete control group contractor) and would like to extend a special thanks to the workers for their cooperation during this study. In Transport Phenomena in Micro and Nanodevices, (CD-ROM), Brooklin, NY. The partnership, including the National Institute for Occupational Safety and Health (NIOSH), the Harvard School of Public Health, the Boston University School of Public Health, PetroLabs Inc. The breathing zone is porous walls microtubes, with three different types of. (DbA), Indeno1,2,3-cdpyrene (IDP), and Benzoghi. sections of 6 different plants, and analysed for cadmium (Cd), lead (Pb). Assist fire-fighters to clear smoke from an underground car park area both during and after a fire outbreak. particle-bound PAHs as well as workers exposure in the breathing zone during the period January. This study was sponsored by the National Asphalt Pavement Association (NAPA) and the State Asphalt Pavement Associations (SAPA). Sets of whole blood, spot urine, scalp hair and personal breathing zone air. Results of Phase II will be the subject of future publications. Accessory respiratory muscle overuse, chest wall mobility and lung hyperinflation are all influenced by diaphragm and zone of apposition resting positions at. More details of those methods selected for Phase II are presented in complementary manuscripts. to effectively capturing weld fume and keeping it out of the operators breathing zone. An overview of methods used and developed from this study is provided. Existing, modified, and new sampling and analytical techniques, used in concert with each other, were evaluated to help design the full-scale study (Phase II).Īlthough subject numbers were limited, the air, dermal, and urine sampling, analytical results and field experience provided valuable guidance in the design and implementation of Phase II. The pilot study was important to examine the sources of exposure, the chemical nature of these exposures, and their biological relevance through analysis of biomarkers in urine.
As part of the design of a comprehensive study of hot-mix asphalt paving workers to investigate the relative contribution of personal breathing zone and dermal exposures to polycyclic aromatic compounds, a two-part pilot (Phase I) was performed.
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