Heterogeneous photochemical reactions of decabromodiphenyl ether
Brominated diphenyl ethers area major class of brominated flame retardants, with production of decabromodiphenyl ether (DBDPE) contributing significantly to this total. Although little is known about the mechanisms and rates of DBDPE decay in the natural environment, photochemical transformation is...
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| Format: | article |
| Sprog: | engelsk |
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2018
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| Online adgang: | https://setac.onlinelibrary.wiley.com/doi/full/10.1002/etc.5620220418 http://ridda2.utp.ac.pa/handle/123456789/4440 |
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| _version_ | 1869652458484006912 |
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| author | Fábrega, José |
| author_browse | Fábrega, José |
| author_facet | Fábrega, José |
| author_role | author |
| collection | Repositorio Institucional de documento digitales de acceso abierto de la UTP |
| dc.creator.none.fl_str_mv | Fábrega, José |
| dc.date.none.fl_str_mv | 11/03/2009 11/03/2009 2018-03-22T13:21:16Z 2018-03-22T13:21:16Z 2018-03-22T13:21:16Z 2018-03-22T13:21:16Z |
| dc.format.none.fl_str_mv | application/pdf text/html |
| dc.identifier.none.fl_str_mv | https://setac.onlinelibrary.wiley.com/doi/full/10.1002/etc.5620220418 1552-8618 http://ridda2.utp.ac.pa/handle/123456789/4440 http://ridda2.utp.ac.pa/handle/123456789/4440 |
| dc.language.none.fl_str_mv | eng |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/embargoedAccess |
| dc.source.none.fl_str_mv | reponame:Repositorio Institucional de documento digitales de acceso abierto de la UTP instname:Universidad Tecnológica de Panamá instacron:U Tecnológica de Panamá |
| dc.subject.none.fl_str_mv | Heterogeneous photochemical decabromodiphenyl Heterogeneous photochemical decabromodiphenyl |
| dc.title.none.fl_str_mv | Heterogeneous photochemical reactions of decabromodiphenyl ether |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | Brominated diphenyl ethers area major class of brominated flame retardants, with production of decabromodiphenyl ether (DBDPE) contributing significantly to this total. Although little is known about the mechanisms and rates of DBDPE decay in the natural environment, photochemical transformation is often suggested as a potentially important fate process. In this study, photochemical reactions of DBDPE precipitated onto hydrated surfaces (quartz glass, silica particles, and humic acid‐coated silica particles) were measured. Decabromodiphenyl ether was irradiated within a Rayonet photochemical reactor equipped with lamps having maximum emissions (Λmax) at 300 or 350 nm or with sunlight (West Lafayette, IN, USA at 40°26′N, 86°55′W). When DBDPE is plated onto quartz tubes and hydrated with reagent‐grade water, phototransformation occurred over a period of days with each light source. With two lamps (Λmax = 300 nm), about 31% of the initial mass of DBDPE remained after 60 h in the Rayonet reactor. Decabromodiphenyl ether transformed more slowly when irradiated by sunlight, with 30% of the initial compound recovered from tubes after 72 h. In the presence of humic acid (HA) solution, transformation of DBDPE by solar irradiation is slowed even further: approximately 70% remained after 72 h. Solar irradiation of DBDPE adsorbed to humic acid‐coated sand particles resulted in the slowest irradiation rates; approximately 88% of the initial mass was recovered after 96 h of exposure. Although the parent compound exhibited slow transformation, analysis by high‐performance liquid chromatography (HPLC) indicated some accumulation of transformation products. |
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| format | article |
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| identifier_str_mv | 1552-8618 |
| instacron_str | U Tecnológica de Panamá |
| institution | U Tecnológica de Panamá |
| instname_str | Universidad Tecnológica de Panamá |
| language | eng |
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| publishDate | 2018 |
| publishDateSort | 2018 |
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| spelling | Heterogeneous photochemical reactions of decabromodiphenyl etherFábrega, JoséHeterogeneousphotochemicaldecabromodiphenylHeterogeneousphotochemicaldecabromodiphenylBrominated diphenyl ethers area major class of brominated flame retardants, with production of decabromodiphenyl ether (DBDPE) contributing significantly to this total. Although little is known about the mechanisms and rates of DBDPE decay in the natural environment, photochemical transformation is often suggested as a potentially important fate process. In this study, photochemical reactions of DBDPE precipitated onto hydrated surfaces (quartz glass, silica particles, and humic acid‐coated silica particles) were measured. Decabromodiphenyl ether was irradiated within a Rayonet photochemical reactor equipped with lamps having maximum emissions (Λmax) at 300 or 350 nm or with sunlight (West Lafayette, IN, USA at 40°26′N, 86°55′W). When DBDPE is plated onto quartz tubes and hydrated with reagent‐grade water, phototransformation occurred over a period of days with each light source. With two lamps (Λmax = 300 nm), about 31% of the initial mass of DBDPE remained after 60 h in the Rayonet reactor. Decabromodiphenyl ether transformed more slowly when irradiated by sunlight, with 30% of the initial compound recovered from tubes after 72 h. In the presence of humic acid (HA) solution, transformation of DBDPE by solar irradiation is slowed even further: approximately 70% remained after 72 h. Solar irradiation of DBDPE adsorbed to humic acid‐coated sand particles resulted in the slowest irradiation rates; approximately 88% of the initial mass was recovered after 96 h of exposure. Although the parent compound exhibited slow transformation, analysis by high‐performance liquid chromatography (HPLC) indicated some accumulation of transformation products.Brominated diphenyl ethers area major class of brominated flame retardants, with production of decabromodiphenyl ether (DBDPE) contributing significantly to this total. Although little is known about the mechanisms and rates of DBDPE decay in the natural environment, photochemical transformation is often suggested as a potentially important fate process. In this study, photochemical reactions of DBDPE precipitated onto hydrated surfaces (quartz glass, silica particles, and humic acid‐coated silica particles) were measured. Decabromodiphenyl ether was irradiated within a Rayonet photochemical reactor equipped with lamps having maximum emissions (Λmax) at 300 or 350 nm or with sunlight (West Lafayette, IN, USA at 40°26′N, 86°55′W). When DBDPE is plated onto quartz tubes and hydrated with reagent‐grade water, phototransformation occurred over a period of days with each light source. With two lamps (Λmax = 300 nm), about 31% of the initial mass of DBDPE remained after 60 h in the Rayonet reactor. Decabromodiphenyl ether transformed more slowly when irradiated by sunlight, with 30% of the initial compound recovered from tubes after 72 h. In the presence of humic acid (HA) solution, transformation of DBDPE by solar irradiation is slowed even further: approximately 70% remained after 72 h. Solar irradiation of DBDPE adsorbed to humic acid‐coated sand particles resulted in the slowest irradiation rates; approximately 88% of the initial mass was recovered after 96 h of exposure. Although the parent compound exhibited slow transformation, analysis by high‐performance liquid chromatography (HPLC) indicated some accumulation of transformation products.2018-03-22T13:21:16Z2018-03-22T13:21:16Z2018-03-22T13:21:16Z2018-03-22T13:21:16Z11/03/200911/03/2009info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdftext/htmlhttps://setac.onlinelibrary.wiley.com/doi/full/10.1002/etc.56202204181552-8618http://ridda2.utp.ac.pa/handle/123456789/4440http://ridda2.utp.ac.pa/handle/123456789/4440enginfo:eu-repo/semantics/embargoedAccessreponame:Repositorio Institucional de documento digitales de acceso abierto de la UTPinstname:Universidad Tecnológica de Panamáinstacron:U Tecnológica de Panamáoai:ridda2.utp.ac.pa:123456789/44402021-07-06T15:34:45Z |
| spellingShingle | Heterogeneous photochemical reactions of decabromodiphenyl ether Fábrega, José Heterogeneous photochemical decabromodiphenyl Heterogeneous photochemical decabromodiphenyl |
| status_str | publishedVersion |
| title | Heterogeneous photochemical reactions of decabromodiphenyl ether |
| title_full | Heterogeneous photochemical reactions of decabromodiphenyl ether |
| title_fullStr | Heterogeneous photochemical reactions of decabromodiphenyl ether |
| title_full_unstemmed | Heterogeneous photochemical reactions of decabromodiphenyl ether |
| title_short | Heterogeneous photochemical reactions of decabromodiphenyl ether |
| title_sort | Heterogeneous photochemical reactions of decabromodiphenyl ether |
| topic | Heterogeneous photochemical decabromodiphenyl Heterogeneous photochemical decabromodiphenyl |
| url | https://setac.onlinelibrary.wiley.com/doi/full/10.1002/etc.5620220418 http://ridda2.utp.ac.pa/handle/123456789/4440 |