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dc.contributor.authorAltunay N.
dc.contributor.authorGürkan R.
dc.contributor.authorKorkmaz S.
dc.date.accessioned2019-07-27T12:10:23Z
dc.date.accessioned2019-07-28T09:31:30Z
dc.date.available2019-07-27T12:10:23Z
dc.date.available2019-07-28T09:31:30Z
dc.date.issued2016
dc.identifier.issn1759-9660
dc.identifier.urihttps://dx.doi.org/10.1039/c6ay01186a
dc.identifier.urihttps://hdl.handle.net/20.500.12418/5265
dc.descriptionRoyal Society of Chemistryen_US
dc.description.abstractThe current study is focused on the determination of the trace levels of manganese, zinc and tin in wet acid digested foods by flame atomic absorption spectrometry (FAAS) after preconcentration with ultrasound assisted-cloud point extraction (UA-CPE). The preconcentration procedure is making use of 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one (Quercetin) as the chelating agent, the cationic surfactant cetyltrimethylammonium bromide (CTAB) as the counter ion, the non-ionic surfactant polyoxyethylenesorbitan monolaurate (Tween 20) as the extracting agent, and acidic methanol as the diluting agent. The significant analytical parameters were optimized, and the selected values were a pH of 4.0, a chelating agent concentration of 8.5 ?mol L-1, cationic and nonionic surfactant concentrations of 30 ?mol L-1 and 0.5% w/v, a sample volume of 10 mL, an equilibrium temperature of 60 °C, an incubation time of 15 min and a diluting agent amount of 1.25 mL. Under optimum conditions, the detection limits for manganese, zinc and tin were 0.34, 0.15 and 0.7 ?g L-1 with sensitivity enhancement factors of 116, 175 and 153, respectively. The precision was evaluated as relative standard deviations (RSDs%) for solution containing 15 ?g L-1 of Mn(ii), 40 ?g L-1 of Zn(ii), and 20 ?g L-1 of Sn(ii), and was found to be 2.3, 2.0 and 2.5% (n: 5), respectively. The accuracy of the method was evaluated by analysis of standard reference materials (SRMs) and through recovery rates from spiked aqueous samples. The obtained results were statistically in good agreement with the certified values at the 95% confidence limit, in which the recoveries for target analytes varied in the range of 95.6-104.2%. The method was successfully applied to the analysis of manganese, zinc and tin contents of various food samples, which are generally of plant origin, including black and green tea after dry ashing and wet digestion steps. © 2016 The Royal Society of Chemistry.en_US
dc.description.sponsorshipAltunay, N.; Faculty of Science, Department of Chemistry, University of CumhuriyetTurkey; email: naltunay@cumhuriyet.edu.tren_US
dc.language.isoengen_US
dc.relation.isversionof10.1039/c6ay01186aen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleUltrasound-assisted cloud point extraction of manganese, zinc and tin from digested food samples for their determination by FAASen_US
dc.typearticleen_US
dc.relation.journalAnalytical Methodsen_US
dc.contributor.departmentAltunay, N., Faculty of Science, Department of Chemistry, University of Cumhuriyet, Sivas, TR-58140, Turkey -- Gürkan, R., Faculty of Science, Department of Chemistry, University of Cumhuriyet, Sivas, TR-58140, Turkey -- Korkmaz, S., Faculty of Science, Department of Chemistry, University of Cumhuriyet, Sivas, TR-58140, Turkeyen_US
dc.identifier.volume8en_US
dc.identifier.issue30en_US
dc.identifier.endpage5939en_US
dc.identifier.startpage5930en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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