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Reference type: Journal
Authors: Li ZH, Li JW, Wang YB, Wei YJ
Article Title: Synthesis and application of surface-imprinted activated carbon sorbent for solid-phase extraction and determination of copper (II).
Publication date: 2014
Journal: Spectrochimica Acta Part A-Molecular and Biomolecular Spctroscopy
Volume: 117
Page numbers: 422-427.
DOI: 10.1016/j.saa.2013.08.045
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1386142513009190

Abstract: A new Cu(II)-imprinted amino-functionalized activated carbon sorbent was prepared by a surface imprinting technique for selective solid-phase extraction (SPE) of Cu(II) prior to its determination by inductively coupled plasma atomic emission spectrometry (ICP-AES). Experimental conditions for effective adsorption of Cu(II) were optimized with respect to different experimental parameters using static and dynamic procedures in detail. Compared with non-imprinted sorbent, the ion-imprinted sorbent had higher selectivity and adsorption capacity for Cu(II). The maximum static adsorption capacity of the ion-imprinted and non-imprinted sorbent for Cu(II) was 26.71 and 6.86 mg g-1, respectively. The relatively selectivity factor values (+Śr) of Cu(II)/Zn(II), Cu(II)/Ni(II), Cu(II)/Co(II) and Cu(II)/Pb(II) were 166.16, 50.77, 72.26 and 175.77, respectively, which were greater than 1. Complete elution of the adsorbed Cu(II) from Cu(II)-imprinted sorbent was carried out using 2 mL of 0.1 mol L-1 EDTA solution. The relative standard deviation of the method was 2.4% for eleven replicate determinations. The method was validated for the analysis by two certified reference materials (GBW 08301, GBW 08303), the results obtained is in good agreement with standard values. The developed method was also successfully applied to the determination of trace copper in natural water samples with satisfactory results
Template and target information: copper ion, Cu(II)
Author keywords: Cu(II)-imprinted, activated carbon, preconcentration, Solid-Phase Extraction (SPE), Inductively coupled plasma atomic emission spectrometry (ICP-AES)


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