Synthetic zeolites as sorbent material for on-line preconcentration of copper traces and its determination using flame atomic absorption spectrometry

Peña, Yaneira Petit de; López, Wilmer; Burguera, J.L.; Burguera, M.; Gallignani, Máximo; Brunetto, R.; Carrero, Pablo; Rondón, Carlos; Imbert, Freddy

doi:10.1016/s0003-2670(99)00566-8

Cited by 71 publications

(29 citation statements)

References 28 publications

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“…The recovery of Copper(II) was found to be quantitative with ethanol and HNO 3 4M as eluting agents. However, HNO 3 4M was preferred owing to its noninflammability and less toxicity 16,17 . It was observed that when the ratio of HNO 3 4M a recovery of 99.7% could be attained.…”

Section: Choice Of the Eluentmentioning

confidence: 99%

“…Avariety of solid materials such as modified ion exchange resins [11][12][13] , functionalized resins with chelating reagents 14 , activated carbon 15 , zeolites 16 , cellulose 17 and immobilized microorganisms on sepiolite 18 have been used for preconcentration of trace metals. Microcrystalline naphthalene [19][20][21] and benzophenone 22 have also been used as solid-phase for adsorptive extraction of metal ion complexes.…”

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confidence: 99%

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Solid phase extraction of trace Cu(II)using Naphtol-2-(Pyridylazo-2)-1 (PAN) modified Single walled carbon nanotubes (SWCNTs) to Determination by FAAS

Moghimi¹,

Peykani²,

Samadi³

2014

Orient. J. Chem

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A simple, reliable and rapid method for preconcentration and modified solid phase C 18 with Single-Walled Carbon Nanotubes with Naphtol-2-(Pyridylazo-2)-1 (PAN) in order to prepare an effective sorbent for the preconcentration and determination of copper. The sorption capacity of Naphtol-2-(Pyridylazo-2)-1 (PAN) -modified Single walled carbon nanotubes (SWCNTs) was 50 mg.g -1 and the optimum pH for the quantitative recovery of copper was found as 3.0. The optimum flow rate, sorbent amount and sample volume were1.0 mL.min -1 , 300 mg and 50 mL, respectively. 5 mL of 4 mol.L -1 HNO 3 was the most suitable eluent. The recommended method is simple and reliable for the determination of copper without any notable matrix effect and successfully applied to environmental water samples. The results of this study show that little amount of Cu 2+ ion with the aid of minimum chemical substacnces, in a relatively short amount of time, and with high percentage of recovery, can be isolated and identified. In this method, the detection limits equal to 0.1µg.mL -1 , were achieved with the experiment's relative standard deviation of (n=10) equal to 1.25% factor prior to condensation equating to 125 and the column capacity of 205 µg for each adsorbent.The accuracy of the proposed method was compared with other standard methods, it became clear superiority. Similar experiments on natural samples under optimal conditions have proven the efficiency of this method at an industrial scale.

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Section: Choice Of the Eluentmentioning

confidence: 99%

mentioning

confidence: 99%

Solid phase extraction of trace Cu(II)using Naphtol-2-(Pyridylazo-2)-1 (PAN) modified Single walled carbon nanotubes (SWCNTs) to Determination by FAAS

Moghimi¹,

Peykani²,

Samadi³

2014

Orient. J. Chem

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“…Solid phase extraction is one of the several procedure techniques used for this purpose. The most common techniques available for this purpose are solvent extraction and solid-phase extraction using various adsorbents such as thiol cotton [23], activated carbon [24], green tea leaves [25], adsorption resins [26], cellulose [27], polythioether [28], microcrystalline naphthalene [29][30][31], Amberlite XAD-2 resin [32], octadecylsilica membrane disk [33], synthetic Zeolites [34], modified kaolinite [35] and analcime Zeolites [36]. Some of these adsorbents may be fairly effective for preconcentration of metal ions, but their methods of preparation are lengthy and involve rigid control of conditions.…”

Section: Introductionmentioning

confidence: 99%

<b>SIMULTANEOUS SEPARATION AND PRECONCENTRATION OF TRACE AMOUNT OF COPPER, NICKEL, CADMIUM AND ZINC IONS ONTO MODIFIED AMBERLITE XAD-4 LOADED WITH 5-Br-PADAP</b>

Taher

Mostafavi

Mobarake

et al. 2006

Bull. Chem. Soc. Eth.

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ABSTRACT. In this work, a simple, rapid, selective, sensitive and economical method has been developed for the simultaneous separation and preconcentration of trace amounts of copper, nickel, cadmium, and zinc in aqueous medium using XAD-4 resins that were modified with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) as an analytical reagent. The sorption is quantitative in the pH range 7.0-9.5, whereas quantitative desorption occurs instantaneously with 2 M HCl and selected trace elements have been determined using flame atomic absorption spectrometry. The linearity is maintained between 0.04-4.0 mg L -1 for copper, 0.1-4.0 mg L -1 for nickel, 0.02-1.3 mg L -1 for cadmium and 0.01-1.4 mg L -1 for zinc. The detection limits were 12 µg L -1 for Cu(II), 30 µg L -1 for Ni(II), 6 µg L -1 for Cd(II), and 4 µg L -1 for Zn(II) in the final solution. Various parameters such as the effect of pH, flow rate, breakthrough volume and interference of a large number of anions and cations have been studied and the proposed method was used for determination of these metal ions in water and standard samples. In order to compare the proposed method, the actual water samples were analyzed by direct FAAS (using standard addition method). Determination of these metal ions in standard samples confirmed that the proposed method has good accuracy.

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“…1 The most common technique available for preconcentration of metals from aqueous samples is solvent extraction and solid-phase extraction using various adsorbents such as thiol cotton, 2 activated carbon, 3 green tea leaves, 4 adsorption resins, 5 cellulose, 6 polythioether, 7 microcrystalline naphthalene, [8][9][10] Amberlite XAD-2 resin, 11 octadecylsilica membrane disk 12 and synthetic Zeolites. 13 Some of these adsorbents may be fairly effective for preconcentration of metal ions, but their preparations are lengthily and control of conditions is rigid.…”

Section: Introductionmentioning

confidence: 99%

“…16 The potential of synthetic Zeolites for the enrichment of metallic traces has been investigated. 13 Nevertheless, the potential of natural Analcime Zeolite as useful material for the enrichment of metallic traces has not been investigated yet.…”

Section: Introductionmentioning

confidence: 99%

Anodic Stripping Differential Pulse Voltammetric Determination of Trace Amounts of Lead after Preconcentration of Its Complex with 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol onto Natural Analcime Zeolite by Column Method

Taher¹,

Mostafavi²,

Afzali³

et al. 2004

Bulletin of the Korean Chemical Society

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This work assesses the potential of natural Analcime Zeolite as an adsorbent for preconcentration of lead (II) traces. Lead is quantitatively retained on 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol by column method with Analcime in the pH range of 5-6.5 and 2 mL min −1 flow rate. Lead was removed from the column with 10.0 mL of 4 M hydrochloric acid and was determined by anodic stripping differential pulse voltammetry. 0.5 ppb detection limit was obtained and linear dynamic range was 3 to 1.2 × 10 5 ppb in final solution with correlation coefficient of 0.999 and relative standard deviation of ± 1.2% (for eight replicate determination of 2.5 µg mL −1 of lead). Various parameters such as the effect of pH, flow rate, instrumental conditions and interferences of some ions on the determination of lead have been studied in detail for optimization of conditions. The method was successfully applied for determination of lead in various samples.

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Synthetic zeolites as sorbent material for on-line preconcentration of copper traces and its determination using flame atomic absorption spectrometry

Cited by 71 publications

References 28 publications

Solid phase extraction of trace Cu(II)using Naphtol-2-(Pyridylazo-2)-1 (PAN) modified Single walled carbon nanotubes (SWCNTs) to Determination by FAAS

Solid phase extraction of trace Cu(II)using Naphtol-2-(Pyridylazo-2)-1 (PAN) modified Single walled carbon nanotubes (SWCNTs) to Determination by FAAS

<b>SIMULTANEOUS SEPARATION AND PRECONCENTRATION OF TRACE AMOUNT OF COPPER, NICKEL, CADMIUM AND ZINC IONS ONTO MODIFIED AMBERLITE XAD-4 LOADED WITH 5-Br-PADAP</b>

Anodic Stripping Differential Pulse Voltammetric Determination of Trace Amounts of Lead after Preconcentration of Its Complex with 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol onto Natural Analcime Zeolite by Column Method

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