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dc.contributor.authorRule, Krista Lynnen_US
dc.date.accessioned2014-03-14T21:36:36Z
dc.date.available2014-03-14T21:36:36Z
dc.date.issued2004-05-24en_US
dc.identifier.otheretd-05252004-122641en_US
dc.identifier.urihttp://hdl.handle.net/10919/42791
dc.description.abstractThe kinetics, products, and reaction pathways of triclosan/free chlorine reactions were investigated for the pH range 3.5-11. Although pH dependent speciation occurs in both triclosan and free chlorine, only the reaction between HOCl and the phenolate-triclosan was found to play a significant role in the kinetics. The second order rate constant for the reaction between phenolate-triclosan and HOCl was found to be 5.40 (±1.82) à 103 M-1s-1. Three chlorinated triclosan intermediates were tentatively identified based on mass spectral analysis. Additionally, 2,4-dichlorophenol, 2,4,6-trichlorophenol, and chloroform formed under excess free chlorine conditions. The majority of the chloroform formed during the reactions does not form via 2,4-dichlorophenol and 2,4,6-trichlorophenol oxidation. Therefore, the majority of chloroform is likely formed via the oxidation of triclosanâ s phenolic ring. Based on the identified products, a reaction pathway was proposed for the oxidation of triclosan in the presence of free chlorine.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartKristafinal2.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectChlorophenoxyphenolsen_US
dc.subjectPharmaceutical and Personal Care Productsen_US
dc.subjectTriclosanen_US
dc.subjectFree Chlorineen_US
dc.subjectChlorophenolsen_US
dc.titleThe Mechanisms, Products, and Kinetics of Triclosan-Free Chlorine Reactionsen_US
dc.typeThesisen_US
dc.contributor.departmentEnvironmental Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineEnvironmental Planningen_US
dc.contributor.committeechairVikesland, Peter J.en_US
dc.contributor.committeememberLittle, John C.en_US
dc.contributor.committeememberEdwards, Marc A.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05252004-122641/en_US
dc.date.sdate2004-05-25en_US
dc.date.rdate2004-06-18
dc.date.adate2004-06-18en_US


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