Synthesis of nano B2O3/TiO2 composite material as a new solid phase extractor and its application to preconcentration and separation of cadmium
| Autor: | Orhan Murat Kalfa, Ozcan Yalcinkaya, Ali Rehber Türker |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Boron Compounds
Environmental Engineering Surface Properties Health Toxicology and Mutagenesis Analytical chemistry chemistry.chemical_element Food Contamination Nanocomposites Matrix (chemical analysis) Adsorption Tap water Specific surface area Environmental Chemistry Water Pollutants Solid phase extraction Composite material Waste Management and Disposal Titanium Detection limit Cadmium Tea Chemistry Solid Phase Extraction Reference Standards Pollution Certified reference materials Environmental Pollutants |
| Zdroj: | Journal of Hazardous Materials. 166:455-461 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2008.11.112 |
| Popis: | A new solid phase extractor, nano-scale diboron trioxide/titanium dioxide composite material, was synthesized and used for separation and/or preconcentration of trace cadmium ion from various samples. The characterization of the synthesized material was performed by scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray diffractometer methods (XRD). The specific surface area of the material was also determined and found as 3.4ml/g. Analytical parameters including pH of sample solution, sample volume, flow rate of sample solution, volume and concentration of eluent for the column solid phase extraction (SPE) procedure were examined. The effect of common matrix ions on the recovery of the cadmium has also been investigated and found that they did not interfere on cadmium preconcentration. Under the optimum experimental conditions, preconcentration factor and analytical detection limit were determined as 50 and 1.44 mu g/L, respectively. The reusability (stabile up to 100 run) and adsorption capacity (49 mg/g) of the sorbent were excellent. The accuracy of the method was confirmed by analyzing certified reference materials (Tea leaves GBW-07605). The results demonstrated good agreement with the certified values (relative error |
| Databáze: | OpenAIRE |
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