Document Detail

Exposure to inhalable flour dust in Canadian flour mills.
MedLine Citation:
PMID:  14612299     Owner:  NLM     Status:  MEDLINE    
In 1999, the American Conference of Governmental Industrial Hygienists (ACGIH(R)) proposed a Threshold Limit Value (TLV(R)) of 0.5 mg/m(3) for flour dust with a sensitization notation. The Labour Program of the Department of Human Resources Development Canada (HRDC), following notice of the intention to set a TLV, conducted a study of the levels of exposure to flour dust in flour mills across Canada to verify existing conditions, as well as to decide whether to adopt the proposed TLV or reference some other value. As part of the study, a relationship between flour dust concentrations obtained by using Institute of Occupational Medicine (IOM) samplers and closed-face 37-mm cassettes was examined and the literature on the health effects of exposure to flour dust was reviewed. A total of 104 millers, packers, sweepers, bakery mix operators, and others (mixed tasks) from 14 flour mills were sampled over an 8-hour work shift using IOM samplers. The results indicate that 101 employees (97.1%) were exposed to levels exceeding 0.5 mg/m(3), 66 employees (67.3%) to levels exceeding 5 mg/m(3), and 44 employees (42.3%) to levels exceeding 10 mg/m(3). For comparison purposes, flour dust measurements were also taken in a highly automated flour mill using state-of-the-art technology. The results suggest that even with the most up-to-date technology and proper cleaning operations in place, the flour milling industry may not be able to reduce the flour dust levels to below the TLV of 0.5 mg/m(3). According to the measurements of inhalable and total dust concentrations, the IOM sampler appears to be a more efficient collector of inhalable airborne particles up to 100 microm than the closed-face 37-mm cassette.
Eva A Karpinski
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Applied occupational and environmental hygiene     Volume:  18     ISSN:  1047-322X     ISO Abbreviation:  Appl Occup Environ Hyg     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2003-11-12     Completed Date:  2004-02-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9103256     Medline TA:  Appl Occup Environ Hyg     Country:  England    
Other Details:
Languages:  eng     Pagination:  1022-30     Citation Subset:  IM    
Human Resources Development Canada (HRDC), Ottawa, Ontario, Canada.
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MeSH Terms
Air Pollutants, Occupational / analysis*,  toxicity
Food Industry
Inhalation Exposure / adverse effects,  analysis*
Occupational Exposure / adverse effects,  analysis*
Threshold Limit Values
Reg. No./Substance:
0/Air Pollutants, Occupational; 0/Dust

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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