|ID (ISN) del documento||60085|
|ISSN - Título de la serie
||0002-8894 - American Industrial Hygiene Association Journal
|Número de serie
||Perrault G., Dion C., Ostiguy C., Michaud D., Baril M.
||Selective sampling and chemical speciation of airborne dust in ferrous foundries
||July 1992, Vol.53, No.7, p.463-470. Illus. 47 ref.
||Airborne dust was selectively sampled in three ferrous foundries. Granulometric fractions were analysed to determine the concentrations of dust, crystalline silica, and metal fumes. The trend in airborne dust concentrations seemed to be explained by the extent of natural or mechanical ventilation in the foundries, although the differences between foundries were generally not statistically significant. Quartz was present in large and medium size particles and absent in small (<0.5µm) particles. Lead was always concentrated in the small particle fraction and was preponderant in the foundry where untreated scrap metal was used. The complexity in particle composition increased as the average aerodynamic diameter of the particle decreased. The metallic content of small particles was higher than that of large particles and was related to casting operations. Medium size and large particles seemed to come mainly from the sand and other ingredients used in the moulding operations.
||polvos en suspensión aérea; polvos; fundiciones; análisis de los polvos; medida del empolvamiento
||plomo; cuarzo; sílice libre; numeración de las partículas; ventilación natural; ventilación mecánica; humos metálicos
|Tipo de documento
||D - Artículos periódicos
|País / Estado o Provincia||Canadá|
|Broad subject area(s)
|Navegación por categoria(s)
||Foundries, metalcasting and forging operations