Characterization of Total and Size-Fractionated Manganese Exposure by Work Area in a Shipbuilding Yard
Safety and Health at Work
;
: 150-155, 2016.
Artigo
em Inglês
| WPRIM
| ID: wpr-92887
ABSTRACT
BACKGROUND:
Shipbuilding involves intensive welding activities, and welders are exposed to a variety of metal fumes, including manganese, that may be associated with neurological impairments. This study aimed to characterize total and size-fractionated manganese exposure resulting from welding operations in shipbuilding work areas.METHODS:
In this study, we characterized manganese-containing particulates with an emphasis on total mass (n = 86, closed-face 37-mm cassette samplers) and particle size-selective mass concentrations (n = 86, 8-stage cascade impactor samplers), particle size distributions, and a comparison of exposure levels determined using personal cassette and impactor samplers.RESULTS:
Our results suggest that 67.4% of all samples were above the current American Conference of Governmental Industrial Hygienists manganese threshold limit value of 100 μg/m3 as inhalable mass. Furthermore, most of the particles containing manganese in the welding process were of the size of respirable particulates, and 90.7% of all samples exceeded the American Conference of Governmental Industrial Hygienists threshold limit value of 20 μg/m3 for respirable manganese.CONCLUSION:
The concentrations measured with the two sampler types (cassette total mass; impactor inhalable mass) were significantly correlated (r = 0.964, p < 0.001), but the total concentration obtained using cassette samplers was lower than the inhalable concentration of impactor samplers.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Tamanho da Partícula
/
Soldagem
/
Manganês
Limite:
Humanos
Idioma:
Inglês
Revista:
Safety and Health at Work
Ano de publicação:
2016
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS