Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils
Predicting the reversible interactions between aromatic amines and soil is essential for assessing the mobility, bioavailability and exposure from contaminated sites. Reversible sorption mechanisms of aniline and α-naphthylamine were investigated by using single and binary solute sorption to five so...
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| Médium: | article |
| Jazyk: | angličtina |
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2018
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| On-line přístup: | https://www.sciencedirect.com/science/article/pii/S0045653500005117 http://ridda2.utp.ac.pa/handle/123456789/4448 |
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| _version_ | 1869652468443381760 |
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| author | Li, Hui |
| author2 | Lee, Linda Fábrega, José Jafvert, Chad |
| author2_role | author author author |
| author_browse | Fábrega, José Jafvert, Chad Lee, Linda Li, Hui |
| author_facet | Li, Hui Lee, Linda Fábrega, José Jafvert, Chad |
| author_role | author |
| collection | Repositorio Institucional de documento digitales de acceso abierto de la UTP |
| dc.creator.none.fl_str_mv | Li, Hui Lee, Linda Fábrega, José Jafvert, Chad |
| dc.date.none.fl_str_mv | 08/04/2001 08/04/2001 2018-03-23T15:24:59Z 2018-03-23T15:24:59Z 2018-03-23T15:24:59Z 2018-03-23T15:24:59Z |
| dc.format.none.fl_str_mv | application/pdf text/html |
| dc.identifier.none.fl_str_mv | https://www.sciencedirect.com/science/article/pii/S0045653500005117 http://ridda2.utp.ac.pa/handle/123456789/4448 http://ridda2.utp.ac.pa/handle/123456789/4448 |
| 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 | Competitive sorption Speciation Aromatic amine Distributed parameter model Cation exchange Partitioning Competitive sorption Speciation Aromatic amine Distributed parameter model Cation exchange Partitioning |
| dc.title.none.fl_str_mv | Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | Predicting the reversible interactions between aromatic amines and soil is essential for assessing the mobility, bioavailability and exposure from contaminated sites. Reversible sorption mechanisms of aniline and α-naphthylamine were investigated by using single and binary solute sorption to five soils at several pH values, and by applying a distributed parameter (DP) model. The DP model assumes linear partitioning of the neutral species into soil organic matter domains and organic cation binding on negative-charged sites with the exchange coefficients represented by a Gaussian probability distribution. Sorption nonlinearity was attributed to cation exchange with varying site affinities, which was adequately simulated using the DP model. Greater uptake by hydrophobic partitioning and selectivity for cation exchange sites was observed for α-naphthylamine compared to aniline. Sorption of α-naphthylamine was not impacted quantitatively by aniline under those conditions examined; however, aniline sorption was reduced by α-naphthylamine with the largest reduction occurring in the soil with the lowest pH. DP model simulations showed that although hydrophobic partitioning increases with soil–solution pH, cation exchange still contributes significantly to the total sorption even at soil–solution pH values greater than pKa+2. |
| eu_rights_str_mv | embargoedAccess |
| format | article |
| id | lrtest_7efd6b77334797984d8d06d47a9619da |
| instacron_str | U Tecnológica de Panamá |
| institution | U Tecnológica de Panamá |
| instname_str | Universidad Tecnológica de Panamá |
| language | eng |
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| oai_identifier_str | oai:ridda2.utp.ac.pa:123456789/4448 |
| publishDate | 2018 |
| publishDateSort | 2018 |
| reponame_str | Repositorio Institucional de documento digitales de acceso abierto de la UTP |
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| spelling | Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soilsLi, HuiLee, LindaFábrega, JoséJafvert, ChadCompetitive sorptionSpeciationAromatic amineDistributed parameter modelCation exchangePartitioningCompetitive sorptionSpeciationAromatic amineDistributed parameter modelCation exchangePartitioningPredicting the reversible interactions between aromatic amines and soil is essential for assessing the mobility, bioavailability and exposure from contaminated sites. Reversible sorption mechanisms of aniline and α-naphthylamine were investigated by using single and binary solute sorption to five soils at several pH values, and by applying a distributed parameter (DP) model. The DP model assumes linear partitioning of the neutral species into soil organic matter domains and organic cation binding on negative-charged sites with the exchange coefficients represented by a Gaussian probability distribution. Sorption nonlinearity was attributed to cation exchange with varying site affinities, which was adequately simulated using the DP model. Greater uptake by hydrophobic partitioning and selectivity for cation exchange sites was observed for α-naphthylamine compared to aniline. Sorption of α-naphthylamine was not impacted quantitatively by aniline under those conditions examined; however, aniline sorption was reduced by α-naphthylamine with the largest reduction occurring in the soil with the lowest pH. DP model simulations showed that although hydrophobic partitioning increases with soil–solution pH, cation exchange still contributes significantly to the total sorption even at soil–solution pH values greater than pKa+2.Predicting the reversible interactions between aromatic amines and soil is essential for assessing the mobility, bioavailability and exposure from contaminated sites. Reversible sorption mechanisms of aniline and α-naphthylamine were investigated by using single and binary solute sorption to five soils at several pH values, and by applying a distributed parameter (DP) model. The DP model assumes linear partitioning of the neutral species into soil organic matter domains and organic cation binding on negative-charged sites with the exchange coefficients represented by a Gaussian probability distribution. Sorption nonlinearity was attributed to cation exchange with varying site affinities, which was adequately simulated using the DP model. Greater uptake by hydrophobic partitioning and selectivity for cation exchange sites was observed for α-naphthylamine compared to aniline. Sorption of α-naphthylamine was not impacted quantitatively by aniline under those conditions examined; however, aniline sorption was reduced by α-naphthylamine with the largest reduction occurring in the soil with the lowest pH. DP model simulations showed that although hydrophobic partitioning increases with soil–solution pH, cation exchange still contributes significantly to the total sorption even at soil–solution pH values greater than pKa+2.2018-03-23T15:24:59Z2018-03-23T15:24:59Z2018-03-23T15:24:59Z2018-03-23T15:24:59Z08/04/200108/04/2001info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdftext/htmlhttps://www.sciencedirect.com/science/article/pii/S0045653500005117http://ridda2.utp.ac.pa/handle/123456789/4448http://ridda2.utp.ac.pa/handle/123456789/4448enginfo: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:123456789/44482021-07-06T15:34:45Z |
| spellingShingle | Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils Li, Hui Competitive sorption Speciation Aromatic amine Distributed parameter model Cation exchange Partitioning Competitive sorption Speciation Aromatic amine Distributed parameter model Cation exchange Partitioning |
| status_str | publishedVersion |
| title | Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils |
| title_full | Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils |
| title_fullStr | Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils |
| title_full_unstemmed | Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils |
| title_short | Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils |
| title_sort | Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils |
| topic | Competitive sorption Speciation Aromatic amine Distributed parameter model Cation exchange Partitioning Competitive sorption Speciation Aromatic amine Distributed parameter model Cation exchange Partitioning |
| url | https://www.sciencedirect.com/science/article/pii/S0045653500005117 http://ridda2.utp.ac.pa/handle/123456789/4448 |