Journal Article

Size Selective Dustiness and Exposure; Simulated Workplace Comparisons

DERK H. BROUWER, INGRID H. M. LINKS, SJAAK A. F. DE VREEDE and YVETTE CHRISTOPHER

in The Annals of Occupational Hygiene

Published on behalf of British Occupational Hygiene Society

Volume 50, issue 5, pages 445-452
ISSN: 0003-4878
Published online March 2006 | e-ISSN: 1475-3162 | DOI: http://dx.doi.org/10.1093/annhyg/mel015
Size Selective Dustiness and Exposure; Simulated Workplace Comparisons

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A simulated workplace study was conducted to investigate the relation between inhalation exposure and dustiness determined with a rotating drum dustiness tester. Three powders were used in the study, i.e. magnesium stearate, representing a very dusty powder, and aluminium oxide and calcium carbonate, representing low and very low dusty powders, respectively. Two scenarios of handling small volume of powders were included; sweeping/cleaning and scooping/weighing/adding. Size-selective dust exposure was assessed using MultiDust (dual-fraction) IOM and RespiCon® sampling heads. For the present operation scenarios, dustiness showed itself to be the major determinant of exposure and explained ∼70% of the exposure variances. The ratios of respirable and inhalable fractions as determined by dustiness tests were comparable with the ratios observed for exposure. The results emphasize the relevance of dustiness as a parameter to characterize substances according to potential for exposure.

Keywords: dust exposure; dustiness; manual powder handling operations; size-selective sampling

Journal Article.  5269 words.  Illustrated.

Subjects: Occupational Medicine

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