Show simple item record

dc.creatorDakovic, Aleksandra
dc.creatorKragovic, Milan
dc.creatorRottinghaus, George E.
dc.creatorSekulic, Zivko
dc.creatorMilicevic, Sonja
dc.creatorMilonjic, Slobodan K.
dc.creatorZarić, Snežana D.
dc.date.accessioned2018-11-22T00:15:54Z
dc.date.available2018-11-22T00:15:54Z
dc.date.issued2010
dc.identifier.issn0927-7765
dc.identifier.urihttps://cherry.chem.bg.ac.rs/handle/123456789/1046
dc.description.abstractNatural Zeolitic tuff was modified with 2, 5 and 10 mmol M+/100 g of octadecyldimethylbenzyl ammonium (ODMBA) ions and the products were denoted as OZ-2, OZ-5 and OZ-10. The starting material and organozeolites were characterized by determination of the point of zero charge (pH(pzc)) and by thermal analysis. in vitro sorption of fumonisin B-1 (FB1) was studied for all sorbents at pH 3, 7 and 9. The pH(pzc) for the zeolitic tuff was 6.8 +/- 0.1, while the pH(pzc) for OZ-2, OZ-5 and OZ-10 pH(pzc) was 7.0 +/- 0.1. The curves pH(final) = f(pH(initial)) suggest that the surfaces of all sorbents are positively charged at pH 3 and uncharged at pH 7 and 9. High sorption of FB1 by the zeolitic tuff in acidic solution Suggests electrostatic Interactions between the anionic FB1 and the positively charged surface. At pH 7 and 9, adsorption of FB1 is prevented because anionic FB1 cannot be adsorbed at the uncharged surface. From the pH(pzc) for the organozeolites, it is possible that with lower amounts of ODMBA (OZ-2 and OZ-5), at pH 3, beside interactions between head groups of ODMBA and its alkyl chains and anionic FB1, electrostatic interactions between positive uncovered surface and anionic FB1 contribute to the sorption, while at pH 7 and 9 there is only the possibility for interactions between FB1 and ODMBA. When the zeolitic surface was completely covered with ODMBA (OZ-10), FB1 sorption was independent of the form of FB1 suggesting only interactions between ODMBA and FB1. (C) 2009 Elsevier B.V. All rights reserved.en
dc.publisherElsevier Science Bv, Amsterdam
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142057/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/19022/RS//
dc.rightsrestrictedAccess
dc.sourceColloids and Surfaces. B: Biointerfaces
dc.subjectZeolitesen
dc.subjectOrganozeolitesen
dc.subjectPoint of zero chargeen
dc.subjectMycotoxinsen
dc.subjectFumonisin B-1en
dc.titleInfluence of natural zeolitic tuff and organozeolites surface charge on sorption of ionizable fumonisin B-1en
dc.typearticle
dc.rights.licenseARR
dcterms.abstractЗарић, Снежана; Милоњиц, Слободан К.; Краговиц, Милан; Милицевиц, Соња; Секулиц, Зивко; Роттингхаус, Георге Е.; Даковиц, Aлександра;
dc.citation.volume76
dc.citation.issue1
dc.citation.spage272
dc.citation.epage278
dc.identifier.wos000274767300040
dc.identifier.doi10.1016/j.colsurfb.2009.11.003
dc.citation.other76(1): 272-278
dc.citation.rankM22
dc.identifier.pmid20004084
dc.type.versionpublishedVersionen
dc.identifier.scopus2-s2.0-74149091997
dc.identifier.rcubKon_2046


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record