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Reference type: Journal
Authors: Zhang HS, Zhou WP, Wang HQ, Wang YY, He FF, Cheng ZQ, Li HL, Tang JH
Article Title: Selective Separation and Analysis of Pb(II) Using a New Surface Imprinted Multi-Walled Carbon Nanotubes Combined with AAS.
Publication date: 2012
Journal: Journal of Analytical Sciences, Methods and Instrumentation
Volume: 2
Page numbers: 60-67.
DOI: 10.4236/jasmi.2012.22012

Abstract: A new surface ion-imprinted Multi-walled carbon nanotubes (MCNTs), which was 6,6'-((1E,1'E)-(pyridine-2,6-diyl-bis(azanylyl))bis(methanylylidene))bis(2-allyl-phenol) and Pb(II) complex as functional monomer and template ion was presented for extracting and enrichment traces of Pb(II) ion. Parameters affecting the recovery of Pb(II) have been investigated in detail. The novel IMCNTs display high affinity, specificity, and selectivity for Pb(II) with a maximum uptake capacity of 115.5 mg g-1 at pH 4.0. Meanwhile, only 11 mins was enough for extracting 98.5% Pb(II) for the IMCNTs. No significant loss in adsorption capacity is observed when the IMCNTs are reused for eleven times. Separation and preconcentration with IMCNTs particles results in a limit of detection of 0.47 μg L-1 (3σ) and RSD (n = 8) of 1.16% by using atomic absorption spectrophotometer (AAS).
Template and target information: lead ion, Pb(II)
Author keywords: Lead determination, Ion Imprinted Particles, Carbon nanotube, selective recognition

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