Open AccessPrecision and accuracy of foundry dust exposure estimates from air sampling data.
Author(s) -
Antti Tossavainen,
Antero Kokko
Publication year - 1976
Publication title -
scandinavian journal of work, environment and health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.621
H-Index - 103
eISSN - 1795-990X
pISSN - 0355-3140
DOI - 10.5271/sjweh.2839
Subject(s) - sampling (signal processing) , environmental science , standard deviation , foundry , statistics , mathematics , materials science , metallurgy , physics , optics , detector
Errors in the sampling methods and in the determination of respirable size quartz in foundry dust have been evaluated and discussed. In general, the total precision of dust sampling and analysis was better than 20%. The term "exposure dose" is introduced and defined. The temporal variation associated with measuring exposure dose is assessed with reference to the use of a log-normal distribution of air sampling results. The logarithmic standard deviations of dust concentrations at fixed sites and jobs are calculated.