Performance of a direct-reading handy equipment for dust counting in workroom air, PDR (MIE, USA), was field-tested in comparison with the results of low-volume air sampling-gravimetry. Application in 64 workplaces of various type dust work with dust concentrations of up to 1.6 mg/m3 showed that the agreement was generally good with a correlation coefficient (r) >0.64. The calculated regression line had a slope close to one, and the intercept on the axis was next to nil, suggesting that the measurement with PDR is essentially the same with that by low-volume air sampling. Further analysis by types of dust work disclosed that the correlation was best when examined in 12 foundries with r as large as 0.95. In contrast, r was small (0.52) in 11 welding workplaces, possibly due to smaller particle size of dust generated during welding.
CITATION STYLE
Takada, S., Ito, K., Kawaguchi, A., Okamoto, S., Higashikawa, K., Furuki, K., & Ikeda, M. (2002). Successful experiences with a handy equipment to measure dust concentrations in various workplaces. Industrial Health, 40(1), 51–53. https://doi.org/10.2486/indhealth.40.51
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