|ID (ISN) del documento||111746|
|ISSN - Título de la serie
||0019-8366 - Industrial Health
|Número de serie
||Schoonover T., Conroy L., Lacey S., Plavka J.
||Personal exposure to metal fume, NO2, and O3 among production welders and non-welders
||Jan. 2011, Vol.49, No.1, p.63-72. 44 ref.
||Personal_exposure_to_metal_fume.pdf [en inglés]
||The objective of this study was to characterize personal exposures to welding-related metals and gases for production welders and non-welders in a large manufacturing facility. Welding fume metals and irritant gases nitrogen dioxide (NO2 and ozone (O3) were sampled for 38 workers. Personal exposure air samples for welding fume metals were collected on open-face cassettes and nitrogen dioxide and ozone exposure samples were collected with diffusive passive samplers. Samples were analyzed for metals using inductively coupled plasma mass spectrometry (ICP-MS) and welding fume metal exposure concentrations were defined as the sum of welding-related metals mass per volume of air sampled. Welding fume metal exposures were highly variable among similar types of welding while NO2 and O3 exposure were less variable. Welding fume metal exposures were significantly higher (474 μg/m3) for welders than non-welders (60 μg/m3). Welders were exposed to higher concentrations NO2 and O3 than non-welders but the differences were not statistically significant. Welding fume metal exposure concentrations for welders performing gas metal arc welding (GMAW) and shielded metal arc welding (SMAW) were higher than welders performing gas tungsten arc welding (GTAW). Non-welders experienced exposures similar to GTAW welders despite a curtain wall barrier separating welding and non-welding work areas.
||atmósfera respirable; dióxido de nitrógeno; ozono; humos de soldadura; soldadura y corte; muestreo individual; transformación de metales
||Estados Unidos; soldadura por arco con protección de gas; locomotoras; toma de muestras y análisis; estudio del caso y testigo
|Tipo de documento
||D - Artículos periódicos
||Metalurgia, trabajo de los metales
Sustancias tóxicas y peligrosas
|Broad subject area(s)
|Navegación por categoria(s)
Welding and cutting