| Monitoring the TiO2-photocatalyzed destruction of aqueous environmental contaminants at parts-per-trillion levels using membrane introduction mass spectrometry (MIMS). | |
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MedLine Citation:
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PMID: 15478924 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Membrane introduction mass spectrometry (MIMS) was used to directly monitor the TiO2/UV-photocatalyzed destruction of acetophenone, toluene, and chloroform in H2O at ppm to pptr concentrations. The instrument response time was sufficiently rapid for these environmental contaminants (1-6min) that "real-time" monitoring of their degradation was possible. This method was used to follow the loss of toluene at pptr levels and the concomitant formation of one of its primary photo-oxidation intermediates, methylphenol. These results illustrate the potential use of MIMS as a sensitive on-line measurement technique for monitoring photocatalytic destruction of trace organic contaminants in water at environmentally relevant levels. |
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Authors:
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Janet H L Nelson; Erik T Krogh; Chris G Gill; Duane A Friesen |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering Volume: 39 ISSN: 1093-4529 ISO Abbreviation: J Environ Sci Health A Tox Hazard Subst Environ Eng Publication Date: 2004 |
Date Detail:
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Created Date: 2004-10-13 Completed Date: 2004-12-16 Revised Date: 2009-08-14 |
Medline Journal Info:
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Nlm Unique ID: 9812551 Medline TA: J Environ Sci Health A Tox Hazard Subst Environ Eng Country: United States |
Other Details:
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Languages: eng Pagination: 2307-17 Citation Subset: IM |
Affiliation:
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Applied Environmental Research Laboratories, Department of Chemistry, Malaspina University-College, Nanaimo, BC, Canada. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acetophenones
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analysis,
chemistry* Catalysis Chloroform / analysis, chemistry* Coloring Agents / analysis Mass Spectrometry / methods Photochemistry Photosensitizing Agents / analysis, chemistry* Sensitivity and Specificity Solvents / analysis, chemistry* Titanium / analysis Toluene / analysis, chemistry* Ultraviolet Rays Water Pollutants, Chemical / analysis |
| Chemical | |
Reg. No./Substance:
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0/Acetophenones; 0/Coloring Agents; 0/Photosensitizing Agents; 0/Solvents; 0/Water Pollutants, Chemical; 108-88-3/Toluene; 13463-67-7/titanium dioxide; 67-66-3/Chloroform; 7440-32-6/Titanium; 98-86-2/acetophenone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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