Detection of low concentrations of a colored adsorbate at silver by surface-enhanced and resonance-enhanced Raman spectrometry

Jeanne E Pemberton, Richard P. Buck

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The surface-enhanced Raman scattering (SERS) and resonance Raman scattering (RRS) enhancement mechanisms have been exploited in obtaining surface Raman spectra from the adsorbed anion of dithizone (diphenylthiocarbazone) at a silver electrode surface at -0.20 V (vs. Ag/AgCl) in pH 12 aqueous alkaline buffer solution. SERS+RRS spectra with acceptable signal-to-noise ratios were acquired from solutions initially 10-2 M through 10-9 M in dithizone anion. The SERS+RRS-detected adsorption isotherm is presented. Calculations of surface population based on the suggested orientation of dithizone anion at the silver surface allow a minimum SERS enhancement factor of 2 × 103 to be estimated for this system.

Original languageEnglish (US)
Pages (from-to)2263-2267
Number of pages5
JournalAnalytical Chemistry
Volume53
Issue number14
StatePublished - 1981

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Adsorbates
Silver
Spectrometry
Raman scattering
Dithizone
Anions
Adsorption isotherms
Signal to noise ratio
Buffers
Electrodes

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Detection of low concentrations of a colored adsorbate at silver by surface-enhanced and resonance-enhanced Raman spectrometry. / Pemberton, Jeanne E; Buck, Richard P.

In: Analytical Chemistry, Vol. 53, No. 14, 1981, p. 2263-2267.

Research output: Contribution to journalArticle

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