Application of modified nano-alumina as a solid phase extraction sorbent for the preconcentration of Cd and Pb in water and herbal samples prior to flame atomic absorption spectrometry determination

Ezoddin, Maryam; Shemirani, Farzaneh; Abdi, Khosrou; Saghezchi, M. Khosravi; Jamali, Mohammad Reza

doi:10.1016/j.jhazmat.2010.02.023

Cited by 147 publications

(45 citation statements)

References 33 publications

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“…Since the physical state of the sample to be analyzed should generally be liquid, a digestion procedure is necessary prior to AAS determination of metals in plant and food samples (Ezoddin et al 2010;Rihawy et al 2010;Chalapathi et al 2010;Fang et al 2010;Bagdatlioglu et al 2010;Kolachi et al 2010a, b;Carneiro et al 2011;Mol 2011). Wet digestion by using acidic solutions is important methodology for the digestion of trace heavy metals in solid samples before AAS determination.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of trace element contents of some herbal plants and spices retailed in Kayseri, Turkey

Soylak

Cihan

Yılmaz

2011

Environ Monit Assess

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The trace element contents of seven kinds of herbal plants and spice samples retailed in local markets in Kayseri-Turkey were determined by flame atomic absorption spectrometry after digestion with HNO(3)/H(2)O(2) mixture. The concentration ranges for the studied elements were found as 6.0-15.2, 0-32.2, 80.0-324.8, 8.1-386.3, and 13.1-36.2 μg/g for copper, nickel, iron, manganese, and zinc, respectively. The levels of cobalt, lead, and chromium ions in all the investigated samples were found to be below the detection limit of flame atomic absorption spectrometry. The results found in the present work were compared with values in the literature.

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Section: Introductionmentioning

confidence: 99%

Evaluation of trace element contents of some herbal plants and spices retailed in Kayseri, Turkey

Soylak

Cihan

Yılmaz

2011

Environ Monit Assess

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“…The LOD of the metals ranged from 0.0004±0.0001 mg/ℓ for Cd to 0.0045±0.0001 mg/ℓ for Pb. These LODs achieved with the imidazolyl-incorporated sorbent were comparable to 0.0015 mg/ℓ Cd and 0.0017 mg/ℓ recorded using nano-alumina sorbents (Ezoddin et al, 2010), and were lower than 1.0 mg/ℓ Cu achieved using substituted naphthalene (Rezaei et al, 2009). The LOQ was lower than 0.0145 mg/ℓ for all of the metals studied.…”

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confidence: 54%

Sorption of toxic metal ions in aqueous environment using electrospun polystyrene fibres incorporating diazole ligands

Darko¹,

Chigome²,

Lillywhite³

et al. 2013

WSA

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Electrospun polystyrene fibres incorporating potassium salts of pyrazole-1-carbodithioate and imidazole-1-carbodithioate were employed as sorbents for heavy metals from aqueous environments. The equilibrating time, initial metal concentrations and sorbent mass for optimal adsorption were 40 min, 5 mg/ℓ and 8 mg, respectively. The optimal pH for metal ion uptake was between 6.3 and 9.0 and was found to be dependent on the basicity of the ligands. Protonation constants for the ligands in aqueous solutions were determined potentiometrically; pK of the imidazole was 6.82 while that of the pyrazole was 3.36. The efficiencies of adsorption and desorption of metals on the imidazolyl-incorporated sorbents were more than 95%, up to the fifth cycle of usage. The limits of quantification were ≤ 0.0145 mg/ℓ for all the metals. Accuracy of the determinations, expressed as relative error between the certified and observed values of certified reference groundwater samples was ≤ 0.2% with relative standard deviations < 3%. Electrospun polystyrene fibres incorporating imidazoles proved to be efficient sorbents for divalent heavy metal ions in aqueous environments as their efficiencies exceeded those of chitosan microspheres, ion-imprinted composites, amino-functionalised mesoporous materials and most of the biomass-based sorbents previously reported on.

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“…Among various methods proposed for the separation and enrichment of Pd(II) solid phase extraction (SPE) is the most widely applied technique due to rapid phase separation, simple and higher preconcentration factor [5][6][7][8][9][10][11][12][13] . At present, nano-sized materials such as TiO 2 , Al 2 O 3 , ZrO 2 , SiO 2 and carbon nanotubes have more important in SPE due to their special property of high adsorption capacity [14][15][16][17][18][19] . But separation of these particles from aqueous medium is difficult because of very small dimension and high dispersion.…”

Section: Introductionmentioning

confidence: 99%

Separation/Preconcentration and Determination of Trace Amounts of Palladium Using Modified Alumina Coated Magnetite Nanoparticles Without Chelating Agent

Karimi

Hatefi-Mehrjardi

Kafi

2014

J. Chil. Chem. Soc.

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In the present article, a simple, rapid, selective, sensitive and economical method has been developed for the separation/preconcentration of the trace amounts of Pd(II) in different real samples using alumina coated magnetite nanoparticles modified by sodium dodecyl sulfate and its determination by flame atomic absorption spectrometry after eluting with 1.0 mol L -1 thiourea. Under the optimal experimental conditions, the preconcentration factor, detection limit, linear range and relative standard deviation of Pd(II) were 280 (for 700 mL of sample solution), 4.3 ng mL −1 , 6.0 -120.0 ng mL −1 and 4.6% (for 10 ng mL -1 , n=10), respectively.

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Application of modified nano-alumina as a solid phase extraction sorbent for the preconcentration of Cd and Pb in water and herbal samples prior to flame atomic absorption spectrometry determination

Cited by 147 publications

References 33 publications

Evaluation of trace element contents of some herbal plants and spices retailed in Kayseri, Turkey

Evaluation of trace element contents of some herbal plants and spices retailed in Kayseri, Turkey

Sorption of toxic metal ions in aqueous environment using electrospun polystyrene fibres incorporating diazole ligands

Separation/Preconcentration and Determination of Trace Amounts of Palladium Using Modified Alumina Coated Magnetite Nanoparticles Without Chelating Agent

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