Estudo da adsorção de brometo de etídeo em resina XAD-7 Study of ethidium bromide adsorption on XAD-7 resin
<abstract language="eng">The adsorption of ethidium bromide on XAD-7 resin was studied. The Freundlich model was the most representative isotherm model to describe the sorption behavior. A solid-liquid equilibrium model was proposed to explain the resin mass influence on the sorption...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2009-01-01
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| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000500010 |
| _version_ | 1811304384772964352 |
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| author | Mônica Winkler de Oliveira Alexandre W. S. Hilsdorf Astréa F. de Souza Silva André Fernando Oliveira |
| author_facet | Mônica Winkler de Oliveira Alexandre W. S. Hilsdorf Astréa F. de Souza Silva André Fernando Oliveira |
| author_sort | Mônica Winkler de Oliveira |
| collection | DOAJ |
| description | <abstract language="eng">The adsorption of ethidium bromide on XAD-7 resin was studied. The Freundlich model was the most representative isotherm model to describe the sorption behavior. A solid-liquid equilibrium model was proposed to explain the resin mass influence on the sorption. The equilibrium constant value estimated was 2.31. The results showed an ethidium bromide ion-pair physical adsorption, with adsorption enthalpy equals to -19.33 kJ/mol. A pK2 value equals to 4.69 ± 0.01 was estimated by two distinct methods. The results will be applied to the ethidium bromide preconcentration aiming its decomposition. |
| first_indexed | 2024-04-13T08:06:05Z |
| format | Article |
| id | doaj.art-b1ebd881f9a141e5ba5fc288a909c582 |
| institution | Directory Open Access Journal |
| issn | 0100-4042 1678-7064 |
| language | English |
| last_indexed | 2024-04-13T08:06:05Z |
| publishDate | 2009-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-b1ebd881f9a141e5ba5fc288a909c5822022-12-22T02:55:09ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642009-01-013251134113810.1590/S0100-40422009000500010Estudo da adsorção de brometo de etídeo em resina XAD-7 Study of ethidium bromide adsorption on XAD-7 resinMônica Winkler de OliveiraAlexandre W. S. HilsdorfAstréa F. de Souza SilvaAndré Fernando Oliveira<abstract language="eng">The adsorption of ethidium bromide on XAD-7 resin was studied. The Freundlich model was the most representative isotherm model to describe the sorption behavior. A solid-liquid equilibrium model was proposed to explain the resin mass influence on the sorption. The equilibrium constant value estimated was 2.31. The results showed an ethidium bromide ion-pair physical adsorption, with adsorption enthalpy equals to -19.33 kJ/mol. A pK2 value equals to 4.69 ± 0.01 was estimated by two distinct methods. The results will be applied to the ethidium bromide preconcentration aiming its decomposition.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000500010ethidium bromideXAD-7 resinadsorption isotherm |
| spellingShingle | Mônica Winkler de Oliveira Alexandre W. S. Hilsdorf Astréa F. de Souza Silva André Fernando Oliveira Estudo da adsorção de brometo de etídeo em resina XAD-7 Study of ethidium bromide adsorption on XAD-7 resin Química Nova ethidium bromide XAD-7 resin adsorption isotherm |
| title | Estudo da adsorção de brometo de etídeo em resina XAD-7 Study of ethidium bromide adsorption on XAD-7 resin |
| title_full | Estudo da adsorção de brometo de etídeo em resina XAD-7 Study of ethidium bromide adsorption on XAD-7 resin |
| title_fullStr | Estudo da adsorção de brometo de etídeo em resina XAD-7 Study of ethidium bromide adsorption on XAD-7 resin |
| title_full_unstemmed | Estudo da adsorção de brometo de etídeo em resina XAD-7 Study of ethidium bromide adsorption on XAD-7 resin |
| title_short | Estudo da adsorção de brometo de etídeo em resina XAD-7 Study of ethidium bromide adsorption on XAD-7 resin |
| title_sort | estudo da adsorcao de brometo de etideo em resina xad 7 study of ethidium bromide adsorption on xad 7 resin |
| topic | ethidium bromide XAD-7 resin adsorption isotherm |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000500010 |
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