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• W1978769413 abstract "A method of separation and preconcentration of cadmium, copper, nickel, lead and zinc at trace level using 8-hydroxyquinoline as a chelating agent and lanthanum(III) as a carrier element is proposed. The heavy metals were determined after preconcentration by inductively coupled plasma optical emission spectrometry (ICP-OES). The results were compared with those obtained using flame atomic absorption spectrometry (F-AAS). The influence of several parameters such as pH, amount of lanthanum(III) as a carrier element, amount of 8-hydroxyquinoline, duration of co-precipitation was examined. Moreover, effects of inorganic matrix on recovery of the determined elements were studied. The detection limits (DL) for ICP-OES were 0.31, 2.9, 1.4, 3.2 and 1.2 μg L−1 for Cd, Cu, Ni, Pb and Zn, respectively, whereas for F-AAS DL were 0.63, 1.1, 3.2, 2.7 and 0.74 μg L−1. The recovery of the method for the determined elements was better than 94% with relative standard deviation between 0.63% and 2.9%. The preconcentration factor was 60. The proposed method was successfully applied for determination of Cd, Cu, Ni, Pb, and Zn in plant materials. Accuracy of the proposed method was verified using certified reference material (NCS ZC85006 Tomato)." @default.
• W1978769413 created "2016-06-24" @default.
• W1978769413 creator A5063799402 @default.
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• W1978769413 date "2014-03-01" @default.
• W1978769413 modified "2023-09-26" @default.
• W1978769413 title "Preconcentration of some metal ions with lanthanum-8-hydroxyquinoline co-precipitation system" @default.
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• W1978769413 doi "https://doi.org/10.1016/j.foodchem.2013.09.149" @default.
• W1978769413 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24206710" @default.
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