Blood benzene concentrations in workers exposed to oxygenated fuel in Fairbanks,Alaska |
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Authors: | R L Moolenaar Brockton J Hefflin David L Ashley John P Middaugh Ruth A Etzel |
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Institution: | (1) Centers for Disease Control and Prevention (CDC), Mailstop C-08, 1600 Clifton Rd. N.E., Atlanta, GA 30333, USA, US;(2) Centers for Disease Control and Prevention (CDC), National Center for Environmental Health, 1600 Clifton Rd. N.E., Mailstop F-39, Atlanta, GA 30333, USA, US;(3) Alaska Department of Health and Social Services, Division of Public Health, Anchorage, AK 99524-0249, USA, US |
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Abstract: | Objective: In November 1992 residents of Fairbanks, Alaska became concerned about the potential health effects of an oxygenated fuel
program during which 15% (by volume) methyl tertiary butyl ether (MTBE) was added to gasoline. To address those concerns,
we earlier completed a survey of occupational exposure to MTBE. We conducted a follow-up survey of workers’ exposure to benzene
from gasoline in Fairbanks. Design: Cross-sectional exposure survey. Methods: We examined blood concentrations of benzene from a convenience sample of workers taken in December 1992 during the oxygenated
fuel program and from another convenience sample of workers taken in February 1993 after the program was suspended. Results: In December, the median blood benzene concentration of samples taken from four mechanics after their workshift (postshift)
was 1.32 μg/l (range, 0.84–2.61 μg/l), and seven nonmechanics (drivers and other garage workers) had a median postshift blood
benzene concentration of 0.27 μg/l (range, 0.09– 0.45 μg/l). In February, nine mechanics had a median postshift blood benzene
concentration of 1.99 μg/l (range, 0.92–3.23 μg/l), and nine nonmechanics had a median postshift blood benzene concentration
of 0.26 μg/l (range, 0.2–0.46 μg/l). Conclusion: Mechanics had higher blood benzene concentrations than did nonmechanics, but further study is needed to determine the impact
of the oxygenated fuel program on exposure to benzene.
Received: 6 November 1995/Accepted: 2 April 1996 |
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Keywords: | Benzene Gasoline Occupational Environmental Blood |
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