Résumé :
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[BDSP. Notice produite par INIST-CNRS R0xBAkAq. Diffusion soumise à autorisation]. Objectives. I assessed air pollution, ventilation, and nonsmokers'risk from secondhand smoke (SHS) in Pennsylvania casinos exempted from a statewide smoke-free workplace law. Methods. I measured respirable suspended particles (RSPs), particulate polycyclic aromatic hydrocarbons (PPAHs), and carbon dioxide inside and outside casinos ; measured changes in patrons'urine cotinine after casino visits ; and assessed SHS impact on workers and patrons, using exposure-response models, air quality standards, and odor and irritation thresholds. Results. PPAH and RSP concentrations in casinos were, on average, 4 and 6 times, respectively, that of outdoor levels despite generous ventilation and low smoking prevalence. SHS infiltrated into nonsmoking gaming areas. Patrons'urine cotinine increased 1.9 ng/mL on average after about 4-hour visits. Conclusions. SHS-induced heart disease and lung cancer will cause an estimated 6 Pennsylvania casino workers'deaths annually per 10000 at risk, 5-fold the death rate from Pennsylvania mining disasters. Casinos should not be exempt from smoke-free workplace laws.
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