Determination of trace impurities in some nickel compounds by flame atomic absorption spectrometry after solid phase extraction using Amberlite XAD-16 resin

Elçi, Latif; Soylak, Mustafa; Uzun, Aslıhan; Büyükpatır, E.; Doğan, Mehmet

doi:10.1007/s002160000448

Cited by 96 publications

(23 citation statements)

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“…Amberlite XAD series in most studies in our working group have been successfully used. [20][21][22][23][24] The great tendency of gold, palladium and platinum to form very stable complex makes it possible to use inorganic complexing agents and extraction for their preconcentration. After sample decomposition, gold, palladium and platinum usually come in the form of stable halogeno complexes.…”

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Separation of Gold, Palladium and Platinum from Metallurgical Samples Using an Amberlite XAD-7 Resin Column Prior to Their Atomic Absorption Spectrometric Determinations

2003

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It has been known for long time that gold, palladium and platinum are present in most ores, alloys and concentrates at very low values. The detection limits of an atomic absorption spectrometer are not low enough for their direct determinations in sample solutions. The determination of gold, palladium and platinum is also difficult because of the large concentrations of unwanted metals and/or salts, such as sodium, iron, nickel and copper. To minimize such problems, the analysis must incorporate preconcentration and separation steps to free these precious metals from the matrix components. In addition, high concentrations of matrix constituents, including the acids used for sample dissolution or digestion, may cause inaccuracies in a method, which is based on external calibration with dilute aqueous standards. For this purpose, several preconcentration and separation procedures for gold, palladium and platinum, such as solvent extraction, 1-3 coprecipitation, 4,5 ion-exchange 6-8 and adsorption, 9-11 have been suggested. Among these procedures, by far, the most popular procedure for analyte concentration and separation is solid-phase extraction. In general, the analyte from a relatively large volume of solution is selectively retained by a solid-phase material based on a variety of mechanisms, and then released into a relatively small volume of eluent. In solid-phase extraction procedures based on adsorption, complexes, chelates and ion associates, the analytes are retained on columns filled with XAD resins, 12,13 polyurethane foams, 14 activated carbon 15-17 and silica gel 18,19 etc. Amberlite XAD series in most studies in our working group have been successfully used. [20][21][22][23][24] The great tendency of gold, palladium and platinum to form very stable complex makes it possible to use inorganic complexing agents and extraction for their preconcentration. After sample decomposition, gold, palladium and platinum usually come in the form of stable halogeno complexes. For this reason, numerous procedures based on the use of halogeno complexes have been proposed for the preconcentration and separation of gold, palladium and platinum. 7,25,26 In this paper, a procedure is described for the determination of gold, palladium and platinum at trace levels in various metallurgic materials, such as pure copper and anodic slime, by applying complexation with halogenide and solid-phase extraction with an Amberlite XAD-7 resin column in combination with atomic absorption spectrometry. Experimental InstrumentA Perkin-Elmer Model 3110 atomic absorption spectrometer equipped with an air-acetylene burner was used for the determination of gold, palladium and platinum. The instrumental parameters were those recommended by the manufacturer. A pH meter (Nel pH-900 Model with a glasselectrode) was employed for measuring the pH values in the aqueous phase. Reagents and standard solutionsAll reagents were of analytical grade unless otherwise specified. Double-distilled water was used throughout the experiments. Extrapure hydrochlo...

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Separation of Gold, Palladium and Platinum from Metallurgical Samples Using an Amberlite XAD-7 Resin Column Prior to Their Atomic Absorption Spectrometric Determinations

2003

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“…The results are shown in Table 2 and prove that Au recoveries are almost quantitative in the presences of interfering cations. Table 3 indicates that the proposed method provides a lower limit of detection than other existing methods [49][50][51][52][53][54][55]. Cloud point extraction and preconcentration of gold in geological matrices prior to flame atomic absorption determination…”

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Cloud point extraction and preconcentration of gold in geological matrices prior to flame atomic absorption determination

et al. 2010

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Brilliant green was used as a complexing agent in cloud point extraction (CPE) and applied for selective preconcentration of trace amounts of gold in geological matrices. The analyte in the initial aqueous solution was acidified with hydrochloric acid (0.1 M) and octylphenoxypolyethoxyethanol (Triton X-114) was added as a surfactant. After phase separation, based on the cloud point separation of the mixture, the surfactant rich phase was diluted with methanol and the analyte determined in the surfactant rich phase by flame atomic absorption spectrometry (FAAS). After optimization of the complexation and extraction conditions, a preconcentration factor of 31 was obtained for only 10 mL of sample. The analytical curve was linear in the range of 3-1000 ng mL −1 and the limit of detection was 1.5 ng mL −1 . The proposed method was applied to the determination of gold in geological samples.. Warsaw and Springer-Verlag Berlin Heidelberg. © Versita

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“…38,39 Several solid phases have been developed for palladium extraction in recent decades. [40][41][42][43][44][45][46][47] In this research, for the first time nanoparticles of alumina are functionalized with pyridine groups and used for extraction of trace amounts of palladium ions from some real samples of waste water. The optimum condition including flow rates of the sample and eluent solution, pH of the solution, type and least amount of eluent for elution were studied.…”

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Flame Atomic Absorption Spectrometric Determination of Palladium in Aqueous Samples after Preconcentration Using Nanoparticles of γ-Alumina Functionalized with Pyridine Groups

et al. 2010

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Experimental ApparatusA flame atomic absorption spectrometer (FAAS), Shimadzu AA-680 equipped with a single element palladium hollow cathode lamp (current 6.0 mA) was used for determination of palladium(II). The operating conditions were as follows: wavelength 244.8 nm, which is the resonance line for palladium; acetylene/air flow rate, 4.7 L min -1 ; and 0.5 nm for spectral 2010 © The Japan Society for Analytical Chemistry † To whom correspondence should be addressed. A new solid phase, nanoparticles of alumina functionalized with pyridine groups, was synthesized and used for extraction and preconcentartion of palladium(II) ions from some water samples. The effects of various parameters such as pH, flow rates of sample and eluent, type and volume and concentration of eluent, sample volume, amount of adsorbent and cationic interferences have been studied and optimum conditions for best recovery have been obtained. The limit of detection of the method based on three times the standard deviation of the blank (3Sb) was obtained: 0.6 ng mL -1 . The preconcentration factor and the adsorption capacity were also calculated to be 60 and 37 mg g -1 , respectively. The recovery of extraction of palladium ions on nano-alumina particles was determined to be 98.5%. The utility of the modified nano-alumina was tested in some samples and showed an RSD value of <0.8%, reflecting its accuracy and reproducibility.

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Determination of trace impurities in some nickel compounds by flame atomic absorption spectrometry after solid phase extraction using Amberlite XAD-16 resin

Cited by 96 publications

References 1 publication

Separation of Gold, Palladium and Platinum from Metallurgical Samples Using an Amberlite XAD-7 Resin Column Prior to Their Atomic Absorption Spectrometric Determinations

Separation of Gold, Palladium and Platinum from Metallurgical Samples Using an Amberlite XAD-7 Resin Column Prior to Their Atomic Absorption Spectrometric Determinations

Cloud point extraction and preconcentration of gold in geological matrices prior to flame atomic absorption determination

Flame Atomic Absorption Spectrometric Determination of Palladium in Aqueous Samples after Preconcentration Using Nanoparticles of γ-Alumina Functionalized with Pyridine Groups

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