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8343979 
Journal Article 
Following the welding aerosols by personal two-step dustmeter 
Karpati, J 
1989 
1 
Pracovní Lékarství
ISSN: 0032-6291
EISSN: 1805-4536 
41 
7 
300-303 
Slovak 
The author examined exposed weldors using welding rods without wrapping under the protective atmosphere of CO2. The respirable and total concentration of the dust was followed in weldors, grinders and in dust-free occupations in a common workshop. The sampling was repeated six times and a total of one thirds of the exposed workers were examined. A particular attention was paid to the description of respirable portion of flying dust with respect to exposed occupational groups. The atomic absorption analysis has shown that manganese and nickel represent the main pollutants. The author determined the mean concentrations of Mn and Ni, upper boundary of the interval of reliability of the measurement and a degree of adhering to MAC in the followed groups of occupation. The manganese and nickel load proved to be highest in the weldors. In the grinders and other occupations in the same workshop the degree of adhering to MAC for nickel was found to be worse than for manganese. The examination of welding aerosols by two-step personal samplers has enriched the range of hygienic information.