Optimization of a new resin, Amberlyst 36, as a solid‐phase extractor and determination of copper(II) in drinking water and tea samples by flame atomic absorption spectrometry

Kendüzler, Erdal; Türker, Ali Rehber

doi:10.1002/jssc.200500212

Cited by 16 publications

(8 citation statements)

References 30 publications

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“…Q 0 and b are the Langmuir constants related to the adsorption capacity (mg/g) and the equilibrium constant (L/mg), respectively. Based on the linearized form of the adsorption isotherm derived from plots of C E /Q E versus C E , the constant Q 0 values were calculated from the slope of the graph according to Kenduzler and Turker [23]. Results are presented in Figure 6.…”

Section: Capacity Of the Resinmentioning

confidence: 99%

Development of a new enrichment method for simultaneous determination of copper and zinc in water samples

Çiftçi¹,

Tunç²,

Ciftci³

2010

Enviro Toxic and Chemistry

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In the present study, an enrichment and separation method for the simultaneous determination of trace amounts of Cu and Zn in water samples was developed. Copper and Zn ions found in water matrix in trace amounts were preconcentrated on Duolite XAD 761 resin without using any chelating agent and determined by flame atomic absorption spectrometer (FAAS). Experimental parameters such as pH, concentration of metal ions, amount of resin, and sample volume for quantitative determination of Cu and Zn ions were optimized. The elution process was performed by using 5 ml of 2 mol/L HCl solution. The preconcentration factors for Cu and Zn were found to be 160 and 200, respectively. Under optimized conditions, limit of detection for Cu and Zn were 2.46 and 3.54 µg/L, respectively. The Langmuir adsorption model was applied to describe the equilibrium isotherm. The Langmuir monolayer adsorption capacity of resin was estimated as 31.2 and 17.7 mg/g for Cu and Zn, respectively. The proposed method was successfully applied to determine the Cu and Zn content of various water samples.

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Section: Capacity Of the Resinmentioning

confidence: 99%

Development of a new enrichment method for simultaneous determination of copper and zinc in water samples

Çiftçi¹,

Tunç²,

Ciftci³

2010

Enviro Toxic and Chemistry

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“…The evaporation process was repeated twice by using 5 ml of concentrated nitric acid and 2 ml of concentrated hydrofluoric acid. The resulting solution was diluted to 50 ml with water and the described procedure was applied (Tokalıoğlu et al 2007;Kendüzler and Türker 2005).…”

Section: Sample Pretreatmentmentioning

confidence: 99%

“…However, due to the high complexity of the matrices and the low levels of metal ions in the aquatic samples, their separation and also the use of a preconcentration step prior to metal analysis are usually required (Kendüzler and Türker 2005). For this purpose, numerous separation and preconcentration procedures have been developed for trace metal ion determination in various matrices.…”

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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“…In most samples, metals are generally present at levels lower than the detection limits of common analytical methods [6]. For this reason, the determination of these elements generally requires preseparation and preconcentration steps due to insufficient sensitivity or matrix interference.…”

Section: Introductionmentioning

confidence: 99%

Chromotropic acid‐functionalized polyurethane foam: A new sorbent for on‐line preconcentration and determination of cobalt and nickel in lettuce samples

Lemos¹,

Santos

Alves

et al. 2006

J of Separation Science

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A chromotropic acid-functionalized polyurethane foam has been developed for use in an on-line preconcentration system for cobalt and nickel determination. The packing material was prepared by covalent coupling of chromotropic acid with the polyurethane foam through an azo group. Co and Ni ions were sorbed in the mini-column, from which they could be eluted directly to the nebulizer-burner system of a flame atomic absorption spectrometer. Elution of cobalt and nickel from the mini-column can be accomplished with 0.50 and 0.75 M HCl solutions, respectively. The enrichment factors obtained were 22 (Co) and 27 (Ni), for 60 s preconcentration time, and 57 (Co) and 59 (Ni), if a preconcentration time of 180 s was used. Under the optimum conditions, the proposed procedure allowed the determination of metals with detection limits of 0.43 (cobalt) and 0.52 microg/L (nickel), respectively, on using preconcentration periods of 180 s. The accuracy of the developed procedure was evaluated by analysis of the certified reference materials NIST 1515 Apple Leaves and NIST 1570a Spinach Leaves. The method was applied to the analysis of lettuce samples. The contents of cobalt in the samples analyzed varied from 0.75 to 0.98 microg/g. Nickel was not detected in the lettuce samples.

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Optimization of a new resin, Amberlyst 36, as a solid‐phase extractor and determination of copper(II) in drinking water and tea samples by flame atomic absorption spectrometry

Cited by 16 publications

References 30 publications

Development of a new enrichment method for simultaneous determination of copper and zinc in water samples

Development of a new enrichment method for simultaneous determination of copper and zinc in water samples

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

Chromotropic acid‐functionalized polyurethane foam: A new sorbent for on‐line preconcentration and determination of cobalt and nickel in lettuce samples

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