Risk analysis for worker exposure to benzene |
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Authors: | William H Hallenbeck Roxanne E Flowers |
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Institution: | (1) School of Public Health, University of Illinois at Chicago, Box 6998, 60680 Chicago, Illinois, USA |
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Abstract: | Cancer risk factors (characterized by route, dose, dose rate per kilogram, fraction of lifetime exposed, species, and sex)
were derived for workers exposed to benzene via inhalation or ingestion. Exposure at the current Occupational Safety and Health
Administration (OSHA) permissible exposure limit (PEL) and at leaking underground storage tank (LUST) sites were evaluated.
At the current PEL of 1 ppm, the theoretical lifetime excess risk of cancer from benzene inhalation is ten per 1000. The theoretical
lifetime excess risk for worker inhalation exposure at LUST sites ranged from 10 to 40 per 1000. These results indicate that
personal protection should be required. The theoretical lifetime excess risk due to soil ingestion is five to seven orders
of magnitude less than the inhalation risks. |
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Keywords: | Benzene Workers Cancer Risk Inhalation Ingestion |
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