Assessment of particulates and bioaerosols in eastern Canadian sawmills

Authors: Duchaine, CarolineMériaux, Anne; Thorne, Peter S.; Cormier, Yvon
Abstract: The purpose of this study was to quantify and identify the airborne contamination in eastern Canadian sawmills. Seventeen sawmills were chosen to cover a wide range of size, geographic distribution, and wood species processed. Within each sawmill different work sites (debarking, sawing, sorting, or planing) were studied separately. Area sampling was performed for exposure assessment. Microbial contaminants were assessed with all-glass impingers 30 and six-stage Andersen microbial samplers; appropriate selective media and culture conditions for bacteria, thermophilic actinomycetes, molds, and yeasts were used. Inhalable dust, endotoxins, temperature, and humidity also were measured. Penicillium species were the most predominant molds with up to 40 different Penicillium species identified. Debarking was the working site most highly contaminated by molds, bacteria, and endotoxins (p=0.0001). At this working site mold levels reached a maximum of 1.5×10 6 CFU/m 3 , whereas the median values for culturable bacteria and endotoxin were 21,620 CFU/m 3 and 1081 endotoxin units/m 3 , respectively. Planing sites were the most highly dust contaminated (median: 3.0 mg/m 3 ) (p <0.05). Sawmills of eastern Canada contain airborne biological contaminants that vary between working sites, and their microflora is different from that previously described in European sawmill
Document Type: Article de recherche
Issue Date: 1 October 2000
Open Access Date: 15 November 2016
Document version: VoR
This document was published in: AIHAJ - American Industrial Hygiene Association, Vol. 61 (5), 727–732 (2000)
American Industrial Hygiene Association
Alternative version: 10.1080/15298660008984583
Collection:Articles publiés dans des revues avec comité de lecture

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