Separation of trace amounts palladium by SiO2/TiO2/Ce nanoparticles prior to flame atomic absorption spectrometry determination in anodic slime and wastewater samples

• Authors: Sayed Mohammadi , Hooshang Hamidian , Zahra Moeinadini
• Languages of publication: EN

Abstracts

EN

In the present work, a new SiO2/TiO2/Ce, nanoparticle was synthesed using sol-gel method and evaluated as an adsorbent for preconcentration trace amounts of Pd(II) ions. The characterization of the nanoparticles has been studied by transmission electron microscope and X-ray diffraction. The preconcentration method is based on palladium adsorption onto the surface of nanoparticle at pH 8.5. The main factors affecting Pd(II) adsorption, such as pH of sample solution, concentration and volume of eluent, sample volume, interfering of the coexisting ions and flow rate of sample and eluent were investigated and optimized. At optimum conditions, linearity was maintained between 4.0 to 1000.0 ng mL−1. Detection limit based on 3Sb/m was 2.3 ng mL−1. Seven replicate determinations of a solution containing of 12.5 µg palladium gave a relative standard deviation ±1.7%. According to the Langmuir linear model, the maximum adsorption capacity of palladium was found to be 34.5 mg g−1. Finally, the feasibility of the proposed method for Pd(II) determination was assessed by analysis of certified reference materials, anodic slime and wastewater samples and satisfactory results were obtained. [...]

Keywords

EN

Nanoparticle; Anodic slime; Wastewater; Palladium determination

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2013
• Volume: 11
• Issue: 11
• Pages: 1749-1756

Dates

published

1 - 11 - 2013

online

25 - 8 - 2013

Contributors

author

Sayed Mohammadi

• Department of Chemistry, Payame Noor University, P.O. Box 19395-4697, Tehran, Iran

author

Hooshang Hamidian

• Department of Chemistry, Payame Noor University, P.O. Box 19395-4697, Tehran, Iran

author

Zahra Moeinadini

• Department of Chemistry, Payame Noor University, P.O. Box 19395-4697, Tehran, Iran

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Identifiers

DOI

10.2478/s11532-013-0315-3