Solid-phase extraction method for preconcentration of trace amounts of some metal ions in environmental samples using silica gel modified by 2,4,6-trimorpholino-1,3,5-triazin

Madrakian, Tayyebeh; Zolfigol, Mohammad Ali; Solgi, Mohammad

doi:10.1016/j.jhazmat.2008.03.021

Cited by 51 publications

(26 citation statements)

References 25 publications

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“…The present cloudpoint extraction offers a simple, rapid, economical methodology for preconcentration and separation of analyte ions in real samples prior to their analysis by flame atomic absorption spectrometry (FAAS). The present method has numerous advantages over reported methods [35][36][37][38][39][40][41][42]. Ligand used in this work is distinct in terms of sensitivity, selectivity towards metal ions.…”

Section: +mentioning

confidence: 96%

Development of efficient method for preconcentration and determination of copper, nickel, zinc and iron ions in environmental samples by combination of cloud point extraction and flame atomic absorption spectrometry

et al. 2009

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A cloud point extraction procedure for the preconcentration of copper, nickel, iron and zinc ions in various samples has been described. Analyte ions in aqueous phase are complexed with 3-((indolin-3-yl)(phenyl)methyl)indoline (IYPMI) and following centrifugation quantitatively extracted to the aqueous phase rich in Triton X-114. The surfactant-rich phase was dissolved in 2.0 mol L−1 HNO3 in methanol prior to metal content determination by flame atomic absorption spectrometry (FAAS). The effects of some parameters including, the concentrations of IYPMI, Triton X-114 and HNO3, bath temperature, centrifuge rate and time were investigated on the recoveries of analyte ions. At optimum conditions, the detection limits of (3 SDb m−1) of 1.6, 2.8, 2.1 and 1.1 ng mL−1 for Cu2+, Fe3+, Ni2+ and Zn2+ along with preconcentration factors of 30 and enrichment factor of 48, 39, 34 and 52 for Cu2+, Ni2+, Fe3+ and Zn2+ respectively, were obtained. The proposed cloud point extraction has been successfully applied for the determination of metal ions in real samples with complicated matrix such as biological, soil and blood samples with high efficiency.

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Section: +mentioning

confidence: 96%

Development of efficient method for preconcentration and determination of copper, nickel, zinc and iron ions in environmental samples by combination of cloud point extraction and flame atomic absorption spectrometry

et al. 2009

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“…The presence of trace heavy metals lower than the detection limits of these instrumental techniques is one of the main problems [6][7][8]. To solve this problem, an effective extraction and preconcentration method is necessary.…”

Section: Introductionmentioning

confidence: 99%

Solid phase extraction of trace amounts of zinc and cadmium ions using perlite as a supper sorbent

Roushani¹,

Baghelani²,

Abbasi³

et al. 2016

Bull. Chem. Soc. Eth.

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ABSTRACT.A novel method using a packed column with perlite as a new sorbent has been developed for preconcentration of trace amounts of zinc and cadmium prior to their determination by flame atomic absorption spectrometry. Several factors that may be affected on the solid phase extraction (SPE) process, such as pH, sample volume, flow rate, volume and concentration of eluent were studied and optimized. Linearity was maintained between 0.001-0.1 µg mL −1 for zinc, and 0.001-0.3 µg mL −1 for cadmium. Detection limits based on 3Sb for zinc and cadmium were 1.8 and 1.6 ng mL −1 , respectively. The relative standard deviations of eight replicate measurements of 0.02 µg mL −1 of zinc and 0.05 µg mL −1 of cadmium ions were 2.1% and 1.8%, respectively. Finally, the developed method was successfully applied to extraction and determination of the zinc and cadmium ions in the water and food samples and satisfactory results were obtained.

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“…Moreover, direct analysis of these inorganic compounds especially metal ions by atomic spectroscopy method, such as inductively coupled plasma atomic emission spectroscopy (ICP-AES), inductively coupled plasma optical emission spectroscopy (ICP-OES), and flame atomic absorption spectroscopy (FAAS), is often difficult due to the matrix interference and low concentration, and this make it difficult for the instrument to detect the ion which might be out of range of instrument's detection limit. Thus, a preconcentration method for the enrichment of these metal ions is necessary (Gupta et al 2004;Kocaoba and Akyuz 2005;Alkan et al 2008;Madrakian et al 2008;Gupta et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Polyurethane composite adsorbent using solid phase extraction method for preconcentration of metal ion from aqueous solution

Olorundare

Msagati

Krause

et al. 2014

Int. J. Environ. Sci. Technol.

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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 HNO 3 . 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.

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Solid-phase extraction method for preconcentration of trace amounts of some metal ions in environmental samples using silica gel modified by 2,4,6-trimorpholino-1,3,5-triazin

Cited by 51 publications

References 25 publications

Development of efficient method for preconcentration and determination of copper, nickel, zinc and iron ions in environmental samples by combination of cloud point extraction and flame atomic absorption spectrometry

Development of efficient method for preconcentration and determination of copper, nickel, zinc and iron ions in environmental samples by combination of cloud point extraction and flame atomic absorption spectrometry

Solid phase extraction of trace amounts of zinc and cadmium ions using perlite as a supper sorbent

Polyurethane composite adsorbent using solid phase extraction method for preconcentration of metal ion from aqueous solution

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