Determination of metal ion concentrations by SERS using 2,2′-bipyridyl complexes
| Autor: | Christine M. Davidson, Julie Docherty, W. Ewen Smith, John Reglinski, Duncan Graham, Samuel Mabbott, Karen Faulds |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Detection limit
Aqueous solution Ligand Chemistry Metal ions in aqueous solution Inorganic chemistry Analytical chemistry Chromophore Biochemistry Analytical Chemistry Ion Metal symbols.namesake visual_art Electrochemistry visual_art.visual_art_medium symbols Environmental Chemistry QD Spectroscopy Raman scattering |
| Zdroj: | The Analyst. 140:6538-6543 |
| ISSN: | 1364-5528 0003-2654 |
| Popis: | Surface enhanced Raman scattering (SERS) can generate characteristic spectral "fingerprints" from metal complexes, thus providing the potential for the development of methods of analysis for the identification and quantitation of a range of metal ions in solution. The advantages include sensitivity and the use of one ligand for several metals without the need for a specific chromophore. Aqueous solutions of Fe(II), Ni(II), Zn(II), Cu(II), Cr(III) and Cd(II) in the presence of excess 2,2'-bipyridyl (bipy) were analysed using SERS. Specific marker bands enabled the identification of each metal ion and the limit of detection for each metal ion was estimated. Two of the ions, Zn(II) and Cu(II), could be detected below the World Health Organisation's (WHO) recommended limits for drinking water at levels of 0.22 and 0.6 mg L(-1), respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|