Preconcentration and Determination of Copper and Zinc in Natural Water Samples by ICP-AES After Complexation and Sorption on Amberlite XAD-2

Ferreira, Sérgio L.C.; Santos, Hilda Costa dos; Ferreira, Janeide R; Araújo, Neyla Margarida Lopo de; Costa, Antônio Celso Spı́nola; Jesus, Djane Santiago de

doi:10.1590/s0103-50531998000600004

Cited by 18 publications

(4 citation statements)

References 13 publications

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“…Amberlite XAD-2 (polystyrene-divinylbenzene polymer) is a resin very used in preconcentration procedures. In our laboratory, it has been used in the preconcentration and simultaneous determination of zinc and copper in natural waters [11].…”

Section: Introductionmentioning

confidence: 99%

Nickel determination in saline matrices by ICP-AES after sorption on Amberlite XAD-2 loaded with PAN

Ferreira

Brito

Dantas

et al. 1999

Talanta

135

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In the present paper, a solid phase extraction system for separation and preconcentration of nickel (ng g(-1)) in saline matrices is proposed. It is based on the adsorption of nickel(II) ions onto an Amberlite XAD-2 resin loaded with 1-(2-pyridylazo)-2-naphthol (PAN) reagent. Parameters such as the pH effect on the nickel extraction, the effect of flow rate and sample volume on the extraction, the sorption capacity of the loaded resin, the nickel desorption from the resin and the analytical characteristics of the procedure were studied. The results demonstrate that nickel(II) ions, in the concentration range 0.10-275 microg l(-1), and pH 6.0-11.5, contained in a sample volume of 25-250 ml, can be extracted by using 1 g Amberlite XAD-2 resin loaded with PAN reagent. The adsorbed nickel was eluted from the resin by using 5 ml 1 M hydrochloric acid solution. The extractor system has a sorption capacity of 1.87 mumol nickel per g of Amberlite XAD-2 resin loaded with PAN. The precision of the method, evaluated as the R.S.D. obtained after analyzing a series of seven replicates, was 3.9% for nickel in a concentration of 0.20 microg ml(-1). The proposed procedure was used for nickel determination in alkaline salts of analytical grade and table salt, using an inductively coupled plasma atomic emission spectroscopy technique (ICP-AES). The standard addition technique was used and the recoveries obtained revealed that the proposed procedure shows good accuracy.

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Section: Introductionmentioning

confidence: 99%

Nickel determination in saline matrices by ICP-AES after sorption on Amberlite XAD-2 loaded with PAN

Ferreira

Brito

Dantas

et al. 1999

Talanta

135

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“…Considering the toxic effects of copper, its determination is quite critical. There are a number of analytical techniques that have been reported for the determination of copper ions at very low concentration levels, including ion chromatography [7,8], UV-Vis Spectrophotometry [9,10], flame atomic absorption spectrometry (FAAS) [11,12], graphite-furnace atomic absorption spectrometry (GF AAS) [13], Colorimetry [14][15][16], fluorescence spectroscopy [17,18], ICP-MS [19], ICP-OES [20], ICP-AES [21], Capilarry Electrophoresis-UV [22], titrimetry [23], gravimetry [24], electrogravimetry [25] and electrochemical methods [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Development of a Composite Cu(II)-Selective Potentiometric Sensor Based on a Thiourea Derivative Symmetric Schiff Base

Yildirim,

Çoldur,

Topcu

et al. 2024

J. Mex. Chem. Soc.

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Abstract. In the present study, initially, a thiourea derivative symmetric Schiff base, (1E,3E)-1,3-bis(5-bromo-2-hydroxybenzylidene)thiourea, was synthesized and characterized by FTIR and SEM-EDX analysis. In addition, an all-solid-state composite Cu(II)-selective potentiometric sensor based on this synthesized compound as an electroactive substance was constructed. Optimization studies indicated that the composition of the optimum sensing composite exhibiting the best potentiometric characteristics was 3.0% Schiff base, 5.0 % multi-walled carbon nanotube (MWCNT), 20.0 % paraffin oil and 72.0% graphite by mass. The proposed sensor displayed a linear response in the concentration range of 5.0×10-6-1.0×10-1 M with a slope of 31.1 mV/decade and a detection limit of 5.0×10-7 M. The proposed sensor exhibited a fairly selective, stable (potential drift: 1.85 mV/h), and rapid (<10 s) response towards Cu(II) ions. Because of the magnitude of its potential drift, the sensor should be recalibrated along the analysis time at least half an hour apart. The sensor can employed safely in the samples with pHs in the range of 2.0-6.5. The lifetime of the fresh sensor surface was determined as 2 weeks. The most important advantage of the sensor is that the sensing composite surface is renewable (at least 10 times) and thus the sensor can be used many times for a long period of time. The analytical applications of the sensor were executed successfully by using the electrode in the potentiometric titration of Cu(II) ions with EDTA as an indicator electrode, in the direct determination of Cu(II) contents of spiked water samples, and in the determination of (w/w) Cu% content of a Turkish coin.

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“…The complexes are essentially insoluble in water (Sandell and Onishi 1978). It has also been used on some preconcentration studies containing solvent extraction, solid phase extraction and cloud point extraction as chelating reagent (Eshwar and Sharma 1987;Lee et al 2001;Lemos et al 2007;Starvin and Rao 2004;Ferreira et al 1998;Chen and Teo 2001). The chemical structure of 1-(2-thiazolylazo)-2-naphthol is given in Fig.…”

Section: Introductionmentioning

confidence: 99%

Solid phase extraction of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions with 1-(2-thiazolylazo)-2-naphthol loaded Amberlite XAD-1180

Tokalıoğlu

Yılmaz

Kartal

2008

Environ Monit Assess

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A new method for separation and preconcentration of trace amounts of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions in various matrices was proposed. The method is based on the adsorption and chelation of the metal ions on a column containing Amberlite XAD-1180 resin impregnated with 1-(2-thiazolylazo)-2-naphthol (TAN) reagent prior to their determination by flame atomic absorption spectrometry (FAAS). The effect of pH, type, concentration and volume of eluent, sample volume, flow rates of sample and elution solutions, and interfering ions have been investigated. The optimum pH for simultaneous retention of all the metal ions was 9. Eluent for quantitative elution was 20 ml of 2 mol l(-1) HNO(3). The optimum sample and eluent flow rates were found as 4 ml min(-1), and also sample volume was 500 ml, except for Mn (87% recovery). The sorption capacity of the resin was found to be 0.77, 0.41, 0.57, and 0.30 mg g(-1) for Cu(II), Ni(II), Cd(II), and Mn(II), respectively. The preconcentration factor of the method was 200 for Cu(II), 150 for Pb(II), 100 for Cd(II) and Ni(II), and 50 for Mn(II). The recovery values for all of the metal ions were > or = 95% and relative standard deviations (RSDs) were < or = 5.1%. The detection limit values were in the range of 0.03 and 1.19 microg l(-1). The accuracy of the method was confirmed by analysing the certified reference materials (TMDA 54.4 fortified lake water and GBW 07605 tea samples) and the recovery studies. This procedure was applied to the determination of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) in waste water and lake water samples.

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Preconcentration and Determination of Copper and Zinc in Natural Water Samples by ICP-AES After Complexation and Sorption on Amberlite XAD-2

Cited by 18 publications

References 13 publications

Nickel determination in saline matrices by ICP-AES after sorption on Amberlite XAD-2 loaded with PAN

Nickel determination in saline matrices by ICP-AES after sorption on Amberlite XAD-2 loaded with PAN

Development of a Composite Cu(II)-Selective Potentiometric Sensor Based on a Thiourea Derivative Symmetric Schiff Base

Solid phase extraction of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions with 1-(2-thiazolylazo)-2-naphthol loaded Amberlite XAD-1180

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