Combustion-Derived Dissolved Organic Matter in Aquatic and Marine Environments
Fire-derived compounds have received considerable attention as a refractory form of dissolved organic carbon (DOC), the largest carbon pool in the ocean. Due to its recalcitrant nature, pyrogenic or black carbon, which is produced by the incomplete combustion of biomass and fossil fuel on land, is a...
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Tallahassee, Florida: Florida State University
2012
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ftfloridasu:oai:diginole.lib.fsu.edu:fsu_183049 2024-06-09T07:49:45+00:00 Combustion-Derived Dissolved Organic Matter in Aquatic and Marine Environments Paeng, Jiyoung (authoraut) Chanton, Jeffrey P. (professor directing dissertation) Cooper, William T. (university representative) Dittmar, Thorsten (committee member) Huettel, Marcus (committee member) Landing, William (committee member) Department of Earth, Ocean and Atmospheric Sciences (degree granting department) Florida State University (degree granting institution) 2012 1 online resource computer https://diginole.lib.fsu.edu/islandora/object/fsu%3A183049/datastream/TN/view/Combustion-Derived%20Dissolved%20Organic%20Matter%20in%20Aquatic%20and%20Marine%20Environments.jpg English eng eng Tallahassee, Florida: Florida State University fsu:183049 (IID) FSU_migr_etd-5087 (URL) http://purl.flvc.org/fsu/fd/FSU_migr_etd-5087 https://diginole.lib.fsu.edu/islandora/object/fsu%3A183049/datastream/TN/view/Combustion-Derived%20Dissolved%20Organic%20Matter%20in%20Aquatic%20and%20Marine%20Environments.jpg This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). The copyright in theses and dissertations completed at Florida State University is held by the students who author them. Earth sciences Oceanography Atmospheric sciences Geophysics Text 2012 ftfloridasu 2024-05-10T08:08:11Z Fire-derived compounds have received considerable attention as a refractory form of dissolved organic carbon (DOC), the largest carbon pool in the ocean. Due to its recalcitrant nature, pyrogenic or black carbon, which is produced by the incomplete combustion of biomass and fossil fuel on land, is an important compound for potential long-term carbon sequestration. The major objective of this dissertation was to test the hypothesis that dissolved pyrogenic organic carbon accounts for a significant fraction of DOC in different environmental systems, and that the distribution and transport of pyrogenic DOC may be an important key to understanding of how terrestrial and marine DOC are linked. To test this hypothesis, solid phase extraction of DOC was coupled with the benzene polycarboxylic acid (BPCA) method for accurate analysis of combustion-derived compounds in the Southern Ocean, rivers and estuaries in southeastern Brazil, Minnesota's peatlands, and the groundwater and coastal ocean of the Gulf of Mexico. The homogenous distribution of the thermogenic signatures including pyrogenic and non-pyrogenic sources found in marine DOC across whole water masses in the deep ocean indicated that thermogenic DOC can act as a long-term sink. Approximately 2% of the DOM in the deep ocean was determined to be of thermogenic origin, derived from ancient biomass burning, and, possibly, the geothermal flux in the deep sea. Dissolved pyrogenic carbon was found to account for up to 9 ± 2% of riverine and estuarine DOC. Pyrogenic DOC entering the watersheds in Brazil appeared to be derived mainly from former forest fires rather than current agricultural uses, in particular sugarcane burning. Dissolved pyrogenic carbon flux was affected by seasonal variability in runoff and water management in reservoirs. Inputs of pyrogenic DOC to the ocean via groundwater were identified, revealing groundwater discharge as a newly-discovered source of marine dissolved pyrogenic carbon. Large amounts of pyrogenic DOC were found in the peatlands of ... Text Southern Ocean Florida State University: DigiNole Commons Southern Ocean |
institution |
Open Polar |
collection |
Florida State University: DigiNole Commons |
op_collection_id |
ftfloridasu |
language |
English |
topic |
Earth sciences Oceanography Atmospheric sciences Geophysics |
spellingShingle |
Earth sciences Oceanography Atmospheric sciences Geophysics Combustion-Derived Dissolved Organic Matter in Aquatic and Marine Environments |
topic_facet |
Earth sciences Oceanography Atmospheric sciences Geophysics |
description |
Fire-derived compounds have received considerable attention as a refractory form of dissolved organic carbon (DOC), the largest carbon pool in the ocean. Due to its recalcitrant nature, pyrogenic or black carbon, which is produced by the incomplete combustion of biomass and fossil fuel on land, is an important compound for potential long-term carbon sequestration. The major objective of this dissertation was to test the hypothesis that dissolved pyrogenic organic carbon accounts for a significant fraction of DOC in different environmental systems, and that the distribution and transport of pyrogenic DOC may be an important key to understanding of how terrestrial and marine DOC are linked. To test this hypothesis, solid phase extraction of DOC was coupled with the benzene polycarboxylic acid (BPCA) method for accurate analysis of combustion-derived compounds in the Southern Ocean, rivers and estuaries in southeastern Brazil, Minnesota's peatlands, and the groundwater and coastal ocean of the Gulf of Mexico. The homogenous distribution of the thermogenic signatures including pyrogenic and non-pyrogenic sources found in marine DOC across whole water masses in the deep ocean indicated that thermogenic DOC can act as a long-term sink. Approximately 2% of the DOM in the deep ocean was determined to be of thermogenic origin, derived from ancient biomass burning, and, possibly, the geothermal flux in the deep sea. Dissolved pyrogenic carbon was found to account for up to 9 ± 2% of riverine and estuarine DOC. Pyrogenic DOC entering the watersheds in Brazil appeared to be derived mainly from former forest fires rather than current agricultural uses, in particular sugarcane burning. Dissolved pyrogenic carbon flux was affected by seasonal variability in runoff and water management in reservoirs. Inputs of pyrogenic DOC to the ocean via groundwater were identified, revealing groundwater discharge as a newly-discovered source of marine dissolved pyrogenic carbon. Large amounts of pyrogenic DOC were found in the peatlands of ... |
author2 |
Paeng, Jiyoung (authoraut) Chanton, Jeffrey P. (professor directing dissertation) Cooper, William T. (university representative) Dittmar, Thorsten (committee member) Huettel, Marcus (committee member) Landing, William (committee member) Department of Earth, Ocean and Atmospheric Sciences (degree granting department) Florida State University (degree granting institution) |
format |
Text |
title |
Combustion-Derived Dissolved Organic Matter in Aquatic and Marine Environments |
title_short |
Combustion-Derived Dissolved Organic Matter in Aquatic and Marine Environments |
title_full |
Combustion-Derived Dissolved Organic Matter in Aquatic and Marine Environments |
title_fullStr |
Combustion-Derived Dissolved Organic Matter in Aquatic and Marine Environments |
title_full_unstemmed |
Combustion-Derived Dissolved Organic Matter in Aquatic and Marine Environments |
title_sort |
combustion-derived dissolved organic matter in aquatic and marine environments |
publisher |
Tallahassee, Florida: Florida State University |
publishDate |
2012 |
url |
https://diginole.lib.fsu.edu/islandora/object/fsu%3A183049/datastream/TN/view/Combustion-Derived%20Dissolved%20Organic%20Matter%20in%20Aquatic%20and%20Marine%20Environments.jpg |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
fsu:183049 (IID) FSU_migr_etd-5087 (URL) http://purl.flvc.org/fsu/fd/FSU_migr_etd-5087 https://diginole.lib.fsu.edu/islandora/object/fsu%3A183049/datastream/TN/view/Combustion-Derived%20Dissolved%20Organic%20Matter%20in%20Aquatic%20and%20Marine%20Environments.jpg |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). The copyright in theses and dissertations completed at Florida State University is held by the students who author them. |
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1801382558043209728 |