Resonance Rayleigh Scattering Spectral Method for Trace Fe3+ Using 1, 4-Dithiothreitol-Modified Nanogold as Probe
| Autor: | Zhi Liang Jiang, Gui Qing Wen, Liang Qin Wu |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Detection limit
Range (particle radiation) Materials science Trace (linear algebra) Correlation coefficient business.industry Analytical chemistry Resonance General Medicine Dithiothreitol symbols.namesake chemistry.chemical_compound Optics chemistry symbols Rayleigh scattering business Spectral method |
| Zdroj: | Applied Mechanics and Materials. :701-706 |
| ISSN: | 1662-7482 |
| Popis: | 1, 4-dithiothreitol (DTT) combined with nanogold (AuNP) to form the DTT-AuNP probe in the solution of 1.0 mmol/L H2SO4. In the presence of Fe3+, the DTT-AuNPs aggregated to big particles that exhibited a maximum Resonance Rayleigh scattering (RRS) peak at 770 nm. Under the chosen conditions, the increased intensity was linear to Fe3+ concentration in the range of 7.3-149.5µg/L, with the regression equation of ΔI770nm = 127.5C +11.2, the correlation coefficient of 0.9954 and the detection limit of 3.75 ug/L Fe3+. The proposed method was applied to detect trace Fe3+ in water samples, with satisfactory results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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