Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Variability in total dust exposure in a cement factory

Wed Jul 24 15:52:20 2024

(2011) Variability in total dust exposure in a cement factory. Industrial Health. pp. 64-68. ISSN 00198366 (ISSN)

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Exposure assessment is a main component of epidemiologic studies and variability in exposure. This assessment is considered as a common approach for such phenomenon. A total of 129 dust samples were collected randomly from 197 personnel from a cement factory located in Ilam province, during 2009 in Iran. The between- and within-group components of variability were determined to assess the contrast in exposure level between the Similar Exposure Groups (SEGs) and to calculate the within-worker geometric standard deviation of the theoretical exposure-response slope. Results were analyzing by one-way random effects model. According to the mentioned model, the probability of long-term mean exposure exceeding to the occupational exposure limit (OEL) was assessed for each SEGs. The arithmetic means (AM) of total dust levels ranged from 0.04 to 39.37 mg/m 3. The geometric means (GM) of total dust were higher in the crusher (20.84 mg/m 3), packing (17.29 mg/m 3), kiln (16.78 mg/m 3), cement mill (14.90 mg/m 3), and raw mill (10.44 mg/m 3). However, the figures for the maintenance and administration parts were 3.77 mg/m 3 and 1.01 mg/m 3, respectively. The random effects model data demonstrated that the F-value calculated was greater than the critical F-value approximately 59 of the variability in the exposure was due to differences between groups. Based on these finding, the order of probability of the long-term mean exposure exceeding (Z) to the OEL of 10 mg/m 3 for total dust which were in kiln (100), packing (100), cement mill (90), crusher (73), raw mill (60) administration (2.3) and the maintenance parts (0). © 2012 National Institute of Occupational Safety and Health.

Item Type: Article
Keywords: Cement dust Exposure assessment SEGs Variance components article building material dust human maximum allowable concentration mining occupational exposure workplace Construction Materials Extraction and Processing Industry Humans
Page Range: pp. 64-68
Journal or Publication Title: Industrial Health
Journal Index: Scopus
Volume: 50
Number: 1
Identification Number:
ISSN: 00198366 (ISSN)
Depositing User: مهندس مهدی شریفی

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