Photofate of Tetrabromobisphenol-A in the Arctic: Role of photofluence and dissolved organic matter
Polybrominated diphenyl ethers (PBDEs) used in consumer goods and flame retardants have been replaced by alternatives such as tetrabromobisphenol A (TBBPA). TBBPA does not readily undergo global distal transport, but local sources still threaten aquatic ecosystems. We studied the photofate of TBBPA...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-12-01
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| Series: | Arctic, Antarctic, and Alpine Research |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/15230430.2024.2372867 |
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| author | Robyn C. O’Halloran Jill Kerrigan Lauren E. O’Connor Jennifer J. Guerard Kimberly J. Hageman Yu-Ping Chin |
| author_facet | Robyn C. O’Halloran Jill Kerrigan Lauren E. O’Connor Jennifer J. Guerard Kimberly J. Hageman Yu-Ping Chin |
| author_sort | Robyn C. O’Halloran |
| collection | DOAJ |
| description | Polybrominated diphenyl ethers (PBDEs) used in consumer goods and flame retardants have been replaced by alternatives such as tetrabromobisphenol A (TBBPA). TBBPA does not readily undergo global distal transport, but local sources still threaten aquatic ecosystems. We studied the photofate of TBBPA with a specific focus on how Arctic-derived dissolved organic matter (DOM) affects its reaction kinetics, degradation pathways and formation of photoproducts in artificial and natural sunlight. Our results corroborate earlier studies that reveal a pH-dependent trend in TBBPA’s direct photolysis with longer degradation times for its acidic form. DOM either plays no role or it slightly reduces TBBPA’s rate of photodegradation via inner-filter effects. Photolysis experiments conducted at our Arctic field site, Toolik Lake Field Station, revealed slower than anticipated degradation, which magnified the half-life significantly during in-lake experiments. Importantly, the composition of DOM was found to influence the type and distribution of TBBPA photoproducts formed, which suggests that different degradation pathways occur in the presence of DOM. These findings provide valuable insights into the intricate interplay of environmental variables that govern the fate of TBBPA in sunlit aquatic ecosystems globally. |
| format | Article |
| id | doaj-art-a58c4bbd79ac4b6aa3fb85164a80adcf |
| institution | Kabale University |
| issn | 1523-0430 1938-4246 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Arctic, Antarctic, and Alpine Research |
| spelling | doaj-art-a58c4bbd79ac4b6aa3fb85164a80adcf2025-01-13T14:40:40ZengTaylor & Francis GroupArctic, Antarctic, and Alpine Research1523-04301938-42462024-12-0156110.1080/15230430.2024.2372867Photofate of Tetrabromobisphenol-A in the Arctic: Role of photofluence and dissolved organic matterRobyn C. O’Halloran0Jill Kerrigan1Lauren E. O’Connor2Jennifer J. Guerard3Kimberly J. Hageman4Yu-Ping Chin5Department of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USADepartment of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USADepartment of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USADepartment of Chemistry, United States Naval Academy, Annapolis, Maryland, USADepartment of Chemistry, Utah State University, Logan, Utah, USADepartment of Civil and Environmental Engineering, University of Delaware, Newark, Delaware, USAPolybrominated diphenyl ethers (PBDEs) used in consumer goods and flame retardants have been replaced by alternatives such as tetrabromobisphenol A (TBBPA). TBBPA does not readily undergo global distal transport, but local sources still threaten aquatic ecosystems. We studied the photofate of TBBPA with a specific focus on how Arctic-derived dissolved organic matter (DOM) affects its reaction kinetics, degradation pathways and formation of photoproducts in artificial and natural sunlight. Our results corroborate earlier studies that reveal a pH-dependent trend in TBBPA’s direct photolysis with longer degradation times for its acidic form. DOM either plays no role or it slightly reduces TBBPA’s rate of photodegradation via inner-filter effects. Photolysis experiments conducted at our Arctic field site, Toolik Lake Field Station, revealed slower than anticipated degradation, which magnified the half-life significantly during in-lake experiments. Importantly, the composition of DOM was found to influence the type and distribution of TBBPA photoproducts formed, which suggests that different degradation pathways occur in the presence of DOM. These findings provide valuable insights into the intricate interplay of environmental variables that govern the fate of TBBPA in sunlit aquatic ecosystems globally.https://www.tandfonline.com/doi/10.1080/15230430.2024.2372867Tetrabromobisphenol AphotolysisArcticfatedissolved organic matter |
| spellingShingle | Robyn C. O’Halloran Jill Kerrigan Lauren E. O’Connor Jennifer J. Guerard Kimberly J. Hageman Yu-Ping Chin Photofate of Tetrabromobisphenol-A in the Arctic: Role of photofluence and dissolved organic matter Arctic, Antarctic, and Alpine Research Tetrabromobisphenol A photolysis Arctic fate dissolved organic matter |
| title | Photofate of Tetrabromobisphenol-A in the Arctic: Role of photofluence and dissolved organic matter |
| title_full | Photofate of Tetrabromobisphenol-A in the Arctic: Role of photofluence and dissolved organic matter |
| title_fullStr | Photofate of Tetrabromobisphenol-A in the Arctic: Role of photofluence and dissolved organic matter |
| title_full_unstemmed | Photofate of Tetrabromobisphenol-A in the Arctic: Role of photofluence and dissolved organic matter |
| title_short | Photofate of Tetrabromobisphenol-A in the Arctic: Role of photofluence and dissolved organic matter |
| title_sort | photofate of tetrabromobisphenol a in the arctic role of photofluence and dissolved organic matter |
| topic | Tetrabromobisphenol A photolysis Arctic fate dissolved organic matter |
| url | https://www.tandfonline.com/doi/10.1080/15230430.2024.2372867 |
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