dc.contributor.author | Ulusoy H.B. | |
dc.contributor.author | Gürkan R. | |
dc.contributor.author | Ulusoy S. | |
dc.date.accessioned | 2019-07-27T12:10:23Z | |
dc.date.accessioned | 2019-07-28T09:14:35Z | |
dc.date.available | 2019-07-27T12:10:23Z | |
dc.date.available | 2019-07-28T09:14:35Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0039-9140 | |
dc.identifier.uri | https://dx.doi.org/10.1016/j.talanta.2011.11.026 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/4952 | |
dc.description | Elsevier B.V. | en_US |
dc.description.abstract | A new micelle-mediated separation and preconcentration method was developed for ultra-trace quantities of mercury ions prior to spectrophotometric determination. The method is based on cloud point extraction (CPE) of Hg(II) ions with polyethylene glycol tert-octylphenyl ether (Triton X-114) in the presence of chelating agents such as 1-(2-pyridylazo)-2-naphthol (PAN) and 4-(2-thiazolylazo) resorcinol (TAR). Hg(II) ions react with both PAN and TAR in a surfactant solution yielding a hydrophobic complex at pH 9.0 and 8.0, respectively. The phase separation was accomplished by centrifugation for 5 min at 3500 rpm. The calibration graphs obtained from Hg(II)-PAN and Hg(II)-TAR complexes were linear in the concentration ranges of 10-1000 ?g L -1 and 50-2500 ?g L-1 with detection limits of 1.65 and 14.5 ?g L-1, respectively. The relative standard deviations (RSDs) were 1.85% and 2.35% in determinations of 25 and 250 ?g L-1 Hg(II), respectively. The interference effect of several ions were studied and seen commonly present ions in water samples had no significantly effect on determination of Hg(II). The developed methods were successfully applied to determine mercury concentrations in environmental water samples. The accuracy and validity of the proposed methods were tested by means of five replicate analyses of the certified standard materials such as QC Metal LL3 (VWR, drinking water) and IAEA W-4 (NIST, simulated fresh water). © 2011 Elsevier B.V. All rights reserved. | en_US |
dc.description.sponsorship | Firat University Scientific Research Projects Management Unit | en_US |
dc.description.sponsorship | Financial support for this study was provided by the Unit of the Scientific Research Projects of Cumhuriyet University (Project no: F- 279 B type). Authors also wish to express their graduate to Prof. Dr. Mehmet AKÇAY for all expertly discussions and his suggestions contributed enormously in the preparation of this manuscript. | en_US |
dc.description.sponsorship | Ulusoy, H.B.; University of Cumhuriyet, Faculty of Sciences, Department of Chemistry, TR-58140 Sivas, Turkey; email: hiulusoy@yahoo.com | en_US |
dc.language.iso | eng | en_US |
dc.relation.isversionof | 10.1016/j.talanta.2011.11.026 | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Cloud point extraction | en_US |
dc.subject | Hg(II) determination | en_US |
dc.subject | PAN | en_US |
dc.subject | Spectrophotometry | en_US |
dc.subject | TAR | en_US |
dc.subject | Triton X-114 | en_US |
dc.title | Cloud point extraction and spectrophotometric determination of mercury species at trace levels in environmental samples | en_US |
dc.type | article | en_US |
dc.relation.journal | Talanta | en_US |
dc.contributor.department | Ulusoy, H.B., University of Cumhuriyet, Faculty of Sciences, Department of Chemistry, TR-58140 Sivas, Turkey -- Gürkan, R., University of Cumhuriyet, Faculty of Sciences, Department of Chemistry, TR-58140 Sivas, Turkey -- Ulusoy, S., University of Cumhuriyet, Faculty of Sciences, Department of Chemistry, TR-58140 Sivas, Turkey | en_US |
dc.identifier.volume | 88 | en_US |
dc.identifier.endpage | 523 | en_US |
dc.identifier.startpage | 516 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |