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Updated: Jul 24, 2025
Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
Published on: August 7, 2016
A magnetic solid phase extraction procedure for Pb(II) at trace levels on magnetic Luffa@TiO2 in food and water
Hassan Elzain Hassan Ahmed1, Ali Mohammednour Ali Mohammed2, Mustafa Soylak3
1Erciyes University, Faculty of Sciences, Department of Chemistry, 38039 Kayseri, Turkey; Technology Research & Application Center (ERU-TAUM), Erciyes University, 38039 Kayseri, Turkey; Sudan Atomic Energy Commission (SAEC) - Chemistry and Nuclear Physics Institute, Khartoum, Sudan; Sudan University of Science and Technology (SUST) - College of Science-Scientific Laboratories Department, Chemistry Section, Khartoum, Sudan.
Abstract:
A novel magnetic Luffa@TiO2 sorbent was synthesized and characterized by using XRD, FTIR and SEM techniques. Magnetic Luffa@TiO2 was used for solid phase extraction of Pb(II) in food and water samples prior to its flame atomic absorption spectrometric (FAAS) detection. The analytical parameters such as pH, adsorbent quantity, type and volume of eluent, and foreign ions were optimized. Analytical features such as the limit of detection (LOD) and the limit of quantification (LOQ) of Pb(II) are 0.04 μg L-1 and 0.13 μg L-1 for liquid samples and 0.159 ng/g and 0.529 ng/g for solid samples, respectively. The preconcentration factor (PF) and relative standard deviation (RSD%) were found 50, and 4 % respectively. The method was validated by using three certified reference materials (NIST SRM 1577b bovine liver, TMDA-53.3 and TMDA-64.3fortified water). The presented method was applied to lead contents of some food and natural water samples.
