Abstract

Hanie Arbabirashid¹ And Ali Moghimi^1*

DOI : http://dx.doi.org/10.13005/ojc/300124

A novel, simple method has been developed for the preconcentration of Cu(II)  based on the adsorption of its Schiff’s Naphtol-2-(Pyridylazo-2)-1 (PAN) complex on a Single walled carbon nanotubes (SWCNTs) onto C₁₈ cartridge . The influence of acidity, eluting agents, stability of the cartridge, sample volume and interfering ions has been investigated in detail. The adsorbed complex could be eluted using HNO₃ 4M  and the concentration of Cu(II) was determined by flame atomic adsorption spectrometry (FAAS). A detection limit of 0.10 μgL^-1 could be achieved and the developed procedure was successfully applied for the determination of Cu(II) in spiked water samples . The preconcentration factor attainable for quantitative recovery (>97%) of Cu(II) was 125 for a 1000mL sample volume. The mentioned method was successfully applied on the determination of Cu(II)  in different water samples. In this method, relative standard deviation (RSD) is %1.25.

Copper(II); Preconcentration; Solid phase extraction; Single walled carbon nanotubes (SWCNTs). Flame atomic adsorption spectrometry (FAAS).

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