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Dechlorination of polychlorinated dibenzo-p-dioxins in the watershed of the New York/New Jersey harbor
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Dechlorination of polychlorinated dibenzo-p-dioxins in the watershed of the New York/New Jersey harbor
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Dewani
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Yashika
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Yashika Dewani
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author
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Rodenburg
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Lisa A
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Lisa A Rodenburg
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Advisory Committee
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chair
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Fennell
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Donna E
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Donna E Fennell
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internal member
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Haggblom
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Max
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Max Haggblom
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Advisory Committee
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internal member
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Rutgers University
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Graduate School - New Brunswick
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theses
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2016
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2016-10
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2016
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xx
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eng
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In this work, data from the Contamination Assessment and Reduction Project (CARP) was used to investigate the dechlorination of polychlorinated dibenzo-p-dioxins and –furans (PCDD/Fs) in the watershed of the New York/New Jersey Harbor. Preliminary investigations using CARP data suggested that peri dechlorination of PCDD/Fs occurs in sewer systems. However, the peri-lateral dechlorination pathway is more environmentally important since it can remove chlorines in the lateral (2,3,7,8) positions, resulting in products that are considered to be non-toxic. The original CARP data set contains information on concentrations of the 17 2,3,7,8-substituted PCDD/F congeners, so that products of peri-lateral dechlorination were not measured. However, during the analysis of these 17 congeners, the data was generated to measure other non-2,3,7,8-substituted congeners that could be products of peri-lateral dechlorination. In this work, the archived chromatograms were retrieved from the contract laboratory that conducted the original analysis, and a data set was built containing the concentrations of all of the tetra- through octa- chlorinated PCDD/F congeners. This new data set was analyzed to discern further evidence that PCDD/Fs are dechlorinated in sewers via the peri-lateral pathway that can result in complete elimination of toxicity. In the first chapter of this thesis, the concentrations of PCDD/Fs within the data set were examined for trends. Results suggested that dechlorination occurred in landfills. The second chapter utilized Positive Matrix Factorization (PMF) analysis on the same data set in an attempt to provide further evidence that PCDD/Fs are dechlorinated in these systems. When compared to EPA’s published 2,3,7,8-congener patterns, the sources of PCDD/Fs in the Harbor were identified as: bleached chemical wood pulp and paper mills (1% total mass of data set), wood combustion (3%), Kraft black liquid recovery boilers (4%), and diesel trucks (92%). However, when compared to the New York Academy of Sciences Dioxin report, these results were deemed inaccurate because they did not align with the major PCDD/F sources into the Harbor as represented by the literature.
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Environmental Sciences
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Rutgers University Electronic Theses and Dissertations
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ETD_7720
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electronic resource
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Note
Supplementary File: Appendix 1: Raw Data of PCDD/F Concentrations
Extent
1 online resource (xii, 88 p. : ill.)
Note
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M.S.
Note
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Includes bibliographical references
Subject
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Topic
New York Harbor (N.Y. and N.J.)
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by Yashika Dewani
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Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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doi:10.7282/T3HT2RND
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ETD graduate
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The author owns the copyright to this work.
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Dewani
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Yashika
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Permission or license
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2016-10-03 01:34:19
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Yashika Dewani
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Rutgers University. Graduate School - New Brunswick
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Author Agreement License
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
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Copyright protected
Availability
Status
Open
Reason
Permission or license
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