Selective Separation and Analysis of Pb(II) Using a New Surface Imprinted Multi-Walled Carbon Nanotubes Combined with AAS

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

Measurement of Laser-Induced Plasma: Stark Broadening Parameters of Pb(II) 2203.5 and 4386.5 Å Spectral Lines

“…The line of Pb(II) 2203.5 Å is one of the lines that is taken as a target line to verify the limit of detection (LOD) of the lead element of interest. 3,4 The determination of contaminant elements in water is important for many applications, such as monitoring polluting elements in effluent streams of industrial processes or quality control; 5,6 laser-induced breakdown spectroscopy (LIBS) is the ideal tool for this purpose.…”

Highly selective nanocomposite sorbents for the specific recognition of S-ibuprofen from structurally related compounds

“…These cavities are capable of recognizing the target molecule from its structurally related compounds. At present, molecular imprinted polymers (MIPs) are widely used in many areas of science such as sensing (Wren et al 2014), food sciences (Whitcombe et al 1997;Perreten et al 1997), separation sciences (McCluskey et al 2007;Zhang et al 2012), drug delivery (Puoci et al 2013) and isolation (Kyzas et al 2015), solid phase extraction (Ö zcan and Demirli 2014;Zarejousheghania et al 2014) and detection of pollutants (Jenkins et al 2001;Kyzas and Bikiaris 2014;. However, MIPs prepared by conventional manner do have some restrictions such as incomplete template removal, slow kinetics, less binding capacity, poor site accessibility (Turner et al 2006), etc.…”