| A portable inhalation system for personal exposure to ozone. | |
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MedLine Citation:
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PMID: 8638965 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A low-cost portable inhalation system was developed for exposing an individual subject to 60-600 parts per billion of ozone in a 30-l clear-plastic head dome. The inhalation system had the following novel features: a canister vacuum cleaner that supplied room air without the need for precleaning or humidification; a 7% oxygen-in-nitrogen feed to a commercial ultraviolet ozonator that avoided an excess production of ozone; a compact inline mixer that assured homogeneous mixing of the 200-300 liters per minute room air supply with the 0.5-1.0 liters per minute of ozonated gas flow, positioning of gas inlet and exhaust hoses on the head dome that provided fresh gas delivery in the vicinity of the mouth; a quick-disconnect neck seal that allowed rapid donning of the head dome by the subject, and mounting of most system components on a small mobile cart. Temperature, humidity, and ozone and carbon dioxide concentrations were measured inside the dome while a subject exercised on a bicycle ergometer. An air flow of 200 liters per minute between rest and light exercise created a suitable microenvironment in the dome. During moderate and heavy exercise, however, a higher flow of 300 liters per minute should be used to suppress the build-up of carbon dioxide and humidity. |
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Authors:
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P T Asplund; A Ben-Jebria; J S Ultman |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Archives of environmental health Volume: 51 ISSN: 0003-9896 ISO Abbreviation: Arch. Environ. Health Publication Date: 1996 Mar-Apr |
Date Detail:
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Created Date: 1996-07-05 Completed Date: 1996-07-05 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0212627 Medline TA: Arch Environ Health Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 138-45 Citation Subset: AIM; IM |
Affiliation:
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Department of Chemical Engineering, Pennsylvania State University, University Park, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Atmosphere Exposure Chambers* Equipment Design Evaluation Studies as Topic Exercise Test Humans Humidity Male Manikins Ozone / administration & dosage* Pulmonary Gas Exchange / drug effects Respiration / drug effects |
| Grant Support | |
ID/Acronym/Agency:
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ES06075/ES/NIEHS NIH HHS |
| Chemical | |
Reg. No./Substance:
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10028-15-6/Ozone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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