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https://hdl.handle.net/11499/6485
Title: | Development of a coprecipitation system for the speciation/preconcentration of chromium in tap waters | Authors: | Karatepe, A. Korkmaz, E. Soylak, M. Elçi, Latif |
Keywords: | Atomic absorption spectrometry Chromium Coprecipitation Speciation Analyte ions Analytical parameters Certified reference materials Detection limits Sample volume Tap water Tap-water samples Total chromium Absorption Absorption spectroscopy Alkalinity Centrifugation Dysprosium Suspensions (fluids) Transition metal compounds Transition metals Metal recovery alkali chromium derivative dysprosium hydroxide tap water transition element atomic absorption spectroscopy centrifugal model test chromium detection method model validation parameterization precipitation (chemistry) quantitative analysis speciation (chemistry) water quality analytical parameters article centrifugation pH precipitation technique validation process Hydrogen-Ion Concentration Indicators and Reagents Reproducibility of Results Solutions Spectrophotometry, Atomic Water Pollutants, Chemical Water Purification Water Supply |
Abstract: | A method for the speciation of chromium(III), chromium(VI) and determination of total chromium based on coprecipitation of chromium(III) with dysprosium hydroxide has been investigated and applied to tap water samples. Chromium(III) was quantitatively recovered by the presented method, while the recovery values for chromium(VI) was below 10%. The influences of analytical parameters including amount of dysprosium(III), pH, centrifugation speed and sample volume for the quantitative precipitation were examined. No interferic effects were observed from alkali, earth alkali and some transition metals for the analyte ions. The detection limits (k = 3, N = 15) were 0.65 µg/L for chromium(III) and 0.78 µg/L for chromium(VI). The validation of the presented method was checked by the analysis of certified reference materials. © 2009 Elsevier B.V. All rights reserved. | URI: | https://hdl.handle.net/11499/6485 https://doi.org/10.1016/j.jhazmat.2009.08.098 |
ISSN: | 0304-3894 |
Appears in Collections: | Fen-Edebiyat Fakültesi Koleksiyonu PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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