A RELIABLE METHOD OF QUANTIFICATION OF TRACE COPPER IN BEVERAGES WITH AND WITHOUT ALCOHOL BY SPECTROPHOTOMETRY AFTER CLOUD POINT EXTRACTION

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dc.contributor.authorGurkan, Ramazan
dc.contributor.authorAltunay, Nail
dc.date.accessioned2024-10-26T18:03:40Z
dc.date.available2024-10-26T18:03:40Z
dc.date.issued2013
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractA new cloud point extraction (CPE) method was developed for the separation and preconcentration of copper (II) prior to spectrophotometric analysis. For this purpose, 1-(2,4-dimethylphenyl) azonapthalen-2-ol (Sudan II) was used as a chelating agent and the solution pH was adjusted to 10.0 with borate buffer. Polyethylene glycol tert-octylphenyl ether (Triton X-114) was used as an extracting agent in the presence of sodium dodecylsulphate (SDS). After phase separation, based on the cloud point of the mixture, the surfactant-rich phase was diluted with acetone, and the enriched analyte was spectrophotometrically determined at 537 nm. The variables affecting CPE efficiency were optimized. The calibration curve was linear within the range 0.285-20 mu g L-1 with a detection limit of 0.085 mu g L-1. The method was successfully applied to the quantification of copper in different beverage samples.
dc.description.sponsorshipCumhuriyet University Scientific Research Projects (CUBAP) Commission
dc.description.sponsorshipThe authors are grateful to the Cumhuriyet University Scientific Research Projects (CUBAP) Commission for partly supporting the present study. Authors wish also to acknowledge Professor M. Akcay for his expert discussions in the preparation of this manuscript.
dc.identifier.endpage1154
dc.identifier.issn0100-4042
dc.identifier.issn1678-7064
dc.identifier.issue8
dc.identifier.startpage1146
dc.identifier.urihttps://hdl.handle.net/20.500.12418/28477
dc.identifier.volume36
dc.identifier.wosWOS:000325694900012
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherSoc Brasileira Quimica
dc.relation.ispartofQuimica Nova
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectcopper
dc.subjectbeverage samples
dc.subjectcloud point extraction
dc.titleA RELIABLE METHOD OF QUANTIFICATION OF TRACE COPPER IN BEVERAGES WITH AND WITHOUT ALCOHOL BY SPECTROPHOTOMETRY AFTER CLOUD POINT EXTRACTION
dc.typeArticle

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