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Description:In response to a request from an employee at Dr. Gammuchia's dental office (SIC-8021), Apopka, Florida a study was conducted of indoor environmental quality and exposures to nitrous oxide (10024972) and glutaraldehyde (111308). Sinusitis, headaches, fatigue, dizziness, inability to concentrate, nausea, and irritation, had been reported by the workers. About six to nine workers were present in the dental office at any given time. There were four operatories, a laboratory area, a sterilization area, a dark room, an office, and a supply room. All four operatories were equipped for nitrous oxide administration. Exposure to nitrous oxide exceeded the NIOSH recommended exposure limit of 25 parts per million (ppm) for all activities assessed in the dental office. A vacuum system to activate the scavenging system had not been installed. Personal exposure levels ranged from 225 to 1,730ppm nitrous oxide. Samples for glutaraldehyde did not suggest overexposure. There was no provision for outside air intake, and the heat pumps had an unpleasant odor. The author concludes that there was a potential health hazard from overexposure to nitrous oxide at the time of the survey. The author recommends that a vacuum system be installed to remove waste nitrous oxide. Work practices should be improved during nitrous-oxide administration. Water damaged insulation in the heat pumps should be replaced, and outside air intakes should be provided.
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Pages in Document:27 pdf pages
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Contributor:Neumeister, Charles E.
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NIOSHTIC Number:nn:00221739
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NTIS Accession Number:PB95-128716
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Citation:Cincinnati, Ohio: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, HETA 94-0017-2394, 1994 Feb;:1-30;
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Federal Fiscal Year:1994
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Peer Reviewed:False
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