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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 12, No. 7, 2015, pp. 2389-2400
Bioline Code: st15225
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 12, No. 7, 2015, pp. 2389-2400

 en Polyurethane composite adsorbent using solid phase extraction method for preconcentration of metal ion from aqueous solution
Olorundare, O. F.; Msagati, T. A. M.; Krause, R. W. M.; Okonkwo, J. O. & Mamba, B. B.

Abstract

Polyurethane composite adsorbent polymeric material was prepared and investigated for selected solidphase extraction for metal ions, prior to its determination by inductively coupled plasma optical emission spectrometry. The surface characterisation was done using Fourier transform infrared spectroscopy. The separation and preconcentration conditions of the analytes investigated includes influence of pH, sample loading flow rate, elution flow rate, type and concentration of eluents. The optimum pH for the highest efficient recoveries for all metal ions, which ranged from 70 to 85 %, is pH 7. The metal ions were quantitatively eluted with 5 mL of 2 mol/L HNO3. Common coexisting ions did not interfere with the separation. The percentage recovery of the metal ions ranged between 70 and 89 %, while the results for the limit of detection and limit of quantification ranged from 0.249 to 0.256 and 0.831 to 0.855, respectively. The experimental tests showed good preconcentration results of trace levels of metal ions using synthesised polyurethane polymer adsorbent composite.

Keywords
Heavy metals; Polymer adsorbent composite (PCAD); Preconcentration; Solid phase extraction (SPE); Inductively coupled plasma optical emission spectroscopy (ICP-OES)

 
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