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Variation on the adsorption efficiency of humic substances from estuarine waters using XAD resins

1995Journal article Open access
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dc.contributor.authorEsteves, Valdemar I.
dc.contributor.authorCordeiro, Nereida M. A.
dc.contributor.authorDuarte, Armando da Costa
dc.date.accessioned2021-05-06T11:19:18Z
dc.date.available2021-05-06T11:19:18Z
dc.date.issued1995
dc.description.abstractThe XAD8 and XAD4 resins, used in series, show different behaviours in relation to the retention of dissolved organic matter (DOM) from estuarine water samples according to different salinities. For the XAD8 resin, the removal of DOM measured in terms of light absorbance at 250 nm varies from 69.4% + 0.5 to 51.4% k 3.5 and for the XAD4 resin it varies from 20.0% + 1.0 to 25.2% + 3.0 for salinities ranging from 0.6 to 33.4. The isolation, with XAD8, of DOM from samples increasing in salinity, measured in terms of emission fluorescence intensity at selected wavelengths (410, 440 and 460 nm) for an excitation of 340 nm, decreases. In the same experimental conditions, the increase of fluorescent organic matter (FOM) removed by the addition of XAD4 resin is always greater than 20%. However, addition of NaCl to the sample with the lowest salinity, shows that the retention in both resins is related more to the nature of DOM than to the ionic strength of the sample.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationEsteves, V. I., Cordeiro, N. M., & da Costa Duarte, A. (1995). Variation on the adsorption efficiency of humic substances from estuarine waters using XAD resins. Marine chemistry, 51(1), 61-66.pt_PT
dc.identifier.doi10.1016/0304-4203(95)00044-Rpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3376
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectEstuarine waterspt_PT
dc.subjectVariation on the adsorption efficiency of humic substancespt_PT
dc.subjectXAD resinspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleVariation on the adsorption efficiency of humic substances from estuarine waters using XAD resinspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage66pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage61pt_PT
oaire.citation.titleMarine Chemistrypt_PT
oaire.citation.volume51pt_PT
person.familyNamecordeiro
person.givenNamenereida
person.identifier1612636
person.identifier.ciencia-id521A-0F62-EA39
person.identifier.orcid0000-0001-6006-3415
person.identifier.ridO-2253-2019
person.identifier.scopus-author-id7004319456
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication3d02b657-c48c-4f56-813a-1284b81960f3
relation.isAuthorOfPublication.latestForDiscovery3d02b657-c48c-4f56-813a-1284b81960f3

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