Trace Determination of Uranyl Ion Using a Blue Led as Excitation Source in Phase-Resolved Luminescence Spectroscopy
| Autor: | Walter A. Massad, Gerardo A. Argüello, Raúl G. Badini |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Detection limit
Chemistry Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Phase (waves) Analytical chemistry Soil Science Uranyl Pollution Analytical Chemistry Ion law.invention chemistry.chemical_compound law Environmental Chemistry Figure of merit Spectroscopy Luminescence Waste Management and Disposal Water Science and Technology Light-emitting diode |
| Zdroj: | International Journal of Environmental Analytical Chemistry. 77:159-175 |
| ISSN: | 1029-0397 0306-7319 |
| DOI: | 10.1080/03067310008032679 |
| Popis: | A phase-resolved luminescence system based on the use of a light emitting diode (LED) is applied to the trace determination of uranyl ion (UO2 2+). The system performance is evaluated, phase resolved spectra of UO2 2+ are shown as well as its lifetime determination using multifrequency phase resolved measurements. Analytical figures of merit are also presented for this system. A limit of detection (LOD) of 10 μg/L is obtained at the blue LED excitation wavelength of 460 nm and its results compare well with a conventional system. Also, a linear dynamic range of ca. 5 orders of magnitude is observed. In situ quenching correction of the analytical signal was evaluated and was applied to a real sample for uranyl determination. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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