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Document Type : Original Research Article


Department Of Chemistry, Ahvaz Science and Research Branch, Islamic Azad University, Ahvaz, Iran



A new sorbent was provided and exerted for separation and preconcentration of Pb (II) before the determination of lead ions by flame atomic absorption spectrometry. The normative studies on extraction, separation and preconcetration of Pb (II) were represented in the present work. This novel method was based on new sorbent by adding diethylenetriamine to sawdust and increasing incidence exterior. The effect of different parameters were studied; such as pH, ligand concentration and sample volume, type and volume of eluent and ligand effect. The optimum pH and preconcentration factor and limit of detection for Pb (II) were 4, 100 and 0.48 µg/L, respectively. Furthermore, in this approach calibration curve was linear in the range of 0.05-100 mg mL-1 with R2 = 0.995. The vertical and horizontal confines of calibration diagrams in 500 mL solution were calculated about 0-0.5 mg L-1 and 0-0.6. The results of applying the present  method to determinate the separated lead ions in water samples were prosperous and harmonious. Precision of the method was investigated by comparing them with observations from previous similar researches.

Graphical Abstract

Application of modified sawdust for solid phase extraction, preconcentration and determination of trace lead in water samples


Main Subjects

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