Solid Phase Extraction of Lead(II) by Sorption on Grinded Eucalyptus Stem and Determination with Flame Atomic Absorption Spectrometry

Abstract

A sensitive and simple solid-phase preconcentration procedure for the determination of trace amount of lead by flame atomic absorption spectrometry (FAAS) is developed. The method is based on the adsorption of Pb 2+ on the column of fine grinded eucalyptus stem adsorbent, elution of the column by nitric acid and subsequent determination by FAAS. The effect of different variables such as pH, eluent type, flow rate and interfering ions on the recovery of the analyte was investigated and optimum conditions were established. The adsorption of lead onto fine grinded eucalyptus stem can formally be described by a Langmuir equation with a maximum adsorption capacity of 4.49 mg g -1 . A preconcentration factor of 50 was achieved using the optimum conditions. The calibration graph was linear in the range 10-125 ng mL -1 of lead in the initial solution with r = 0.9982. The limit of detection based on 3S b criterion was 4.5 ng mL -1 and the relative standard deviation for eight replicate measurements of 30 and 80 ng mL -1 of iron was 3.6 and 2.8%, respectively. The method was successfully applied to the determination of lead added to well, tap and wastewater samples.

Ordered mesoporous silicon doped with HPMo‐SiO 2 solid phase extraction of trace Pb prior to flame atomic absorption spectrometry determination

“…A comparison of the proposed method with some recently published papers on Pb determination by SPE‐FAAS is given in Table 3. As seen, as the same technique of FAAS, this LOD is lower than those of studies by Üngören and Kartal [13] and Mousavi et al [14] and close to those of works [14–16]. However, as compared with the multiple element methods of ICP‐OES, ours is a little lower than [17] and close to [18].…”

Solid-phase extraction of heavy metal ions on bucky tubes disc in natural water and herbal plant samples

“…The pH of the working solutions in the solid-phase extraction works are one of the main parameter for the quantitative recoveries of the analytes (Rofouei et al 2009;Tavallali et al 2010;Rezaei et al 2009;Soylak and Tuzen 2006;Mousavi et al 2009;Afzali and Mohammadi 2011). The effect of pH on the recoveries of Fe(III) and Pb(II) on the BTs disc were investigated on the pH range of 4.0-12.0.…”

Pb2+adsorption behavior of calix[4]arene based Merrifield Resin

“…A comparison of maximum Pb 2+ -picrate adsorption capacity qm of resin (1) with other adsorbents reported in literature [44][45][46][47][48][49][50][51] is given in ( Table 1). The data show that the adsorption capacity of resin (1) is relatively high when compared with other reported adsorbent materials.…”