Use of NbO?SiO in an automated on-line preconcentration system for determination of copper and cadmium by FAAS

Silva, Edson Luiz da; Ganzarolli, Edgard Moreira; Carasek, Eduardo

doi:10.1016/j.talanta.2003.09.014

Cited by 51 publications

(23 citation statements)

References 26 publications

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“…The chelating resins can be used in flow injection system with various detection methods like FAAS, ICP-AES, spectrophotometry, chemiluminescence and ICP-MS etc [26].There are various chelating resins have recently been used such as polyurethane foam [27][28][29][30][31][32][33][34][35], cellulose, silica gel [36][37][38][39][40][41][42], alumina [43][44][45][46][47][48], chitosan [49][50][51], carbon active [52] and polymeric resins like Amberlite etc. Amberlite XAD resins widely used to develop several chelating materials for preconcentration procedures due to its good physical and chemical properties such as porosity, high surface area, durability and purity.…”

Section: Applications Of Chelating Resins Based On Amberlite Xad mentioning

confidence: 99%

Applications of Amberlite XAD based Chelating resins in Online Pre concentration of metal ions

Meena¹,

Saxena²

2017

IOSR JAC

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Section: Applications Of Chelating Resins Based On Amberlite Xad mentioning

confidence: 99%

Applications of Amberlite XAD based Chelating resins in Online Pre concentration of metal ions

Meena¹,

Saxena²

2017

IOSR JAC

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“…Silica gel chemically modified with niobium(V) oxide (Nb2O5-SiO2) was synthesized as described in the literature. 24,25 To evaluate the effect of foreign ions on …”

Section: Reagents and Solutionsmentioning

confidence: 99%

“…The eluate is carried directly to the nebulization system of the FAAS. 18,25 Optimization strategy for the proposed system…”

Section: On-line Preconcentration Systemmentioning

confidence: 99%

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Application of Factorial Design and Doehlert Matrix for Determination of Trace Lead in Environmental Samples by On-line Column Preconcentration FAAS Using Silica Gel Chemically Modified with Niobium(V) Oxide

et al. 2008

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In this study a new method for Pb determination in water using solid phase extraction coupled to a flow injection system and flame atomic absorption spectrometry was developed. The sorbent used for Pb preconcentration and extraction was silica gel chemically modified with niobium(V) oxide. Flow and chemical variables of the system were optimized through a multivariate procedure. The factors selected were buffer type, eluent concentration, and sample and eluent flow rates. It was verified that the aforementioned factors as well as their interactions were statistically significant at the 95% confidence level. The effect of foreign ions was evaluated using a fractionary factorial experimental design. The detection limit was 0.35 μg L -1 and the precision was 1.6%. Results for recovery tests using different environmental samples were between 90 and 104%. Certified reference materials were analyzed in order to check the accuracy of the proposed method.

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“…Silva and Ganzarolli [14] investigated adsorption properties of copper and cadmium on silica gel modified with niobium(V) oxide using an online preconcentration system. Granado-Castro et al [15] developed a transport system for copper through a bulk liquid membrane containing pyridine-2-acetaldehyde benzoylhydrazone because of separation and preconcentration of this metal from natural water.…”

Section: Introductionmentioning

confidence: 99%

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

Türker²

2005

J of Separation Science

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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 A new simple and reliable method has been developed to separate and preconcentrate trace copper ion in drinking water and tea samples for subsequent measurement by flame atomic absorption spectrometry (FAAS). The copper ions are adsorbed quantitatively during passage of aqueous solutions through Amberlyst 36 cation exchange resin. After the separation and preconcentration stage, the analyte was eluted with a potassium cyanide solution and determined by FAAS. Different factors including pH of sample solution, sample volume, amount of resin, flow rate of aqueous solution, volume and concentration of eluent, and matrix effects for preconcentration were examined. The analytical figures of merit for the determination of copper are as follows: analytical detection limit (3 r), 0.26 lg/L; precision (RSD), 3.1% for 100 lg/L; enrichment factor, 200 (using 1000 mL of sample solution and 5 mL of eluent); time of analysis, 3.5 h (for obtaining enrichment factor of 200); capacity of resin, 125 mg/g. The method was applied for copper determination by FAAS in tap water, commercial natural spring water, commercial treated drinking water, and commercial tea bag sample. The accuracy of the method is confirmed by analyzing tea leaves (GBW 07605). The results demonstrated good agreement with the certified values.

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Use of NbO?SiO in an automated on-line preconcentration system for determination of copper and cadmium by FAAS

Cited by 51 publications

References 26 publications

Applications of Amberlite XAD based Chelating resins in Online Pre concentration of metal ions

Applications of Amberlite XAD based Chelating resins in Online Pre concentration of metal ions

Application of Factorial Design and Doehlert Matrix for Determination of Trace Lead in Environmental Samples by On-line Column Preconcentration FAAS Using Silica Gel Chemically Modified with Niobium(V) Oxide

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

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