dc.contributor.author | Gürkan R. | |
dc.contributor.author | Aksoy T. | |
dc.contributor.author | Ulusoy H.T. | |
dc.contributor.author | Akçay M. | |
dc.date.accessioned | 2019-07-27T12:10:23Z | |
dc.date.accessioned | 2019-07-28T09:32:21Z | |
dc.date.available | 2019-07-27T12:10:23Z | |
dc.date.available | 2019-07-28T09:32:21Z | |
dc.date.issued | 2013 | |
dc.identifier.issn | 0889-1575 | |
dc.identifier.uri | https://dx.doi.org/10.1016/j.jfca.2013.08.005 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/5520 | |
dc.description.abstract | Cloud point extraction (CPE) was used for the preconcentration of molybdenum (Mo), after the formation of a complex with Victoria pure blue BO (VPB+) in presence of excess thiocyanate and cetylpyridinium chloride (CPC) at pH 2.0, and further determination by flame atomic absorption spectrometry (FAAS) using Triton X-114 as surfactant. The main factors affecting the CPE, such as concentration of thiocyanate, VPB+, CPC, Triton X-114, pH, equilibration temperature and incubation time, were optimized for the best extract efficiency. Under the optimized conditions, a 32-fold enhancement factor was reached. The lower limit of detection (LOD) obtained under the optimal conditions was 2.18?gL-1. The accuracy (REs) and precision (RSDs) for five replicate determinations at 250?gL-1 Mo were 3.25 and 2.36% after preconcentration with CPE. The calibration graph using the preconcentration method was highly linear with a correlation coefficient of 0.9949 in range of 7.5-1800?gL-1. The method was successfully applied to the determination of Mo in beverages and food samples and in certified reference materials. The results of developed method were compared with those of independent ICP-OES method, and quantitatively verified and validated with recoveries. © 2013 Elsevier Inc. | en_US |
dc.description.sponsorship | Firat University Scientific Research Projects Management Unit | en_US |
dc.description.sponsorship | The authors express their gratitude to the Scientific Research Projects Council in Cumhuriyet University for partly support of this work. Thanks are also due to analytical research group who generously shared their results before publication. The present study was also presented in the 12th National Spectroscopy Conference with international participation, organized by Faculty of Pharmacy, University of Ankara, Side, Antalya, Turkey. | en_US |
dc.description.sponsorship | Gürkan, R.; University of Cumhuriyet, Faculty of Science, Department of Chemistry, TR-58140 Sivas, Turkey; email: rgurkan@cumhuriyet.edu.tr | en_US |
dc.language.iso | eng | en_US |
dc.relation.isversionof | 10.1016/j.jfca.2013.08.005 | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Beverages and food samples | en_US |
dc.subject | CPC | en_US |
dc.subject | CPE/FAAS | en_US |
dc.subject | Food analysis | en_US |
dc.subject | Food composition | en_US |
dc.subject | Food safety | en_US |
dc.subject | Mo(VI) | en_US |
dc.subject | Thiocyanate, VPB+ | en_US |
dc.title | Determination of low levels of molybdenum (VI) in food samples and beverages by cloud point extraction coupled with flame atomic absorption spectrometry | en_US |
dc.type | article | en_US |
dc.relation.journal | Journal of Food Composition and Analysis | en_US |
dc.contributor.department | Gürkan, R., University of Cumhuriyet, Faculty of Science, Department of Chemistry, TR-58140 Sivas, Turkey -- Aksoy, T., University of Cumhuriyet, Faculty of Science, Department of Chemistry, TR-58140 Sivas, Turkey -- Ulusoy, H.T., University of Cumhuriyet, Faculty of Pharmacy, Department of Analytical Chemistry, TR-58140 Sivas, Turkey -- Akçay, M., University of Cumhuriyet, Faculty of Science, Department of Chemistry, TR-58140 Sivas, Turkey | en_US |
dc.identifier.volume | 32 | en_US |
dc.identifier.issue | 1 | en_US |
dc.identifier.endpage | 82 | en_US |
dc.identifier.startpage | 74 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |