Metalworking fluid-related aerosols in machining plants.

摘要: Respiratory problems are observed in machinists using soluble metalworking fluid (MWF). Evidences suggest that these could be related to the aerosolized microorganisms and their byproducts from MWF. To establish MWF aerosol exposure thresholds better understand effect on human health, aerosols must fully characterized. This article evaluates airborne working environment. Air quality parameters (endotoxin levels, culturable microorganisms, mist, inhalable dust air exchange rates) were evaluated at 44 sites, 25 shops Quebec, Canada. Microorganism concentrations also measured Culturable bacteria low, ranging 1.2 × 101 1.5 103 CFU (colony forming units) m− 3, even for highly contaminated by (up 2.4 109 mL− 1). Inhalable varied between < 0.1 2.6 mg while rates mostly below standard...