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Titolo:
Characterisation of humic acid by means of SERS
Autore:
Vogel, E; Gessner, R; Hayes, MHB; Kiefer, W;
Indirizzi:
Univ Wurzburg, Inst Phys Chem, D-97074 Wurzburg, Germany Univ Wurzburg Wurzburg Germany D-97074 s Chem, D-97074 Wurzburg, Germany Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England Univ Birmingham Birmingham W Midlands England B15 2TT W Midlands, England
Titolo Testata:
JOURNAL OF MOLECULAR STRUCTURE
, volume: 483, anno: 1999,
pagine: 195 - 199
SICI:
0022-2860(19990525)483:<195:COHABM>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
SILVER;
Keywords:
humic acid; surface enhanced Raman spectroscopy; adsorption;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Kiefer, W Univ Wurzburg, Inst Phys Chem, Am Hubland, D-97074 Wurzburg, Germany Univ Wurzburg Am Hubland Wurzburg Germany D-97074 burg, Germany
Citazione:
E. Vogel et al., "Characterisation of humic acid by means of SERS", J MOL STRUC, 483, 1999, pp. 195-199

Abstract

Humic acid from Oak Forest extracted at pH 7, was investigated by means ofsurface enhanced Raman spectroscopy (SERS). The substance was deposited ontwo different SERS substrates: ex-situ roughened silver electrodes and silver island films. A comparison of the SERS spectra excited with the 514 nm and the 647 nm lines shows considerable differences in the relative intensities of the bands. These alterations may be a result of resonance enhancement and/or photochemically induced conformation changes of the molecule. Differences in the SERS spectra of the sample adsorbed on different SERS substrates indicate a strong dependence of the adsorption configuration of the humic acid on the metal surface, on the surface potential, and on the coadsorption of anions. (C) 1999 Elsevier Science B.V. All rights reserved,

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 08:14:01