The extracts of a homeopathic Chamomilla vulgaris preparation and chamomile tea were analyzed by surfaceenhanced Raman scattering and surface-enhanced IR spectroscopies. The aqueous or methanolic extracts were deposited on nanostructured, electrochemically prepared Au surfaces. Only saccharose was identified reliably in homeopathic sample. The presence of other component is evident but they could not be identified.
The review article is devoted mainly to the description of applications of gold nanoparticles (GNPs) in separation sciences, especially in electromigration and chromatographic techniques. The applications of GNPs in particular separation methods, CE, microchip CE, MEKC, CEC, HPLC and GC, are classified according to the molecular size of the analytes from low-molecular-mass compounds via medium sized substances to biopolymers (proteins and nucleic acids). A very recent and promising utilization of GNPs for sample preparation, preconcentration and preseparation of selected analytes from complex matrices is presented as well. Moreover, in two introductory sections, typical preparation procedures of the GNPs and their modifications are presented and physico-chemical and analytical methods employed for characterization of the native and modified GNPs are briefly introduced.
- MeSH
- chemická frakcionace přístrojové vybavení metody MeSH
- chemické techniky analytické přístrojové vybavení metody MeSH
- chromatografie micelární elektrokinetická kapilární MeSH
- chromatografie plynová MeSH
- elektroforéza kapilární MeSH
- kovové nanočástice chemie MeSH
- vysokoúčinná kapalinová chromatografie MeSH
- zlato MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- přehledy MeSH
