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Optical detection of phenolic compounds based on the surface plasmon resonance band of Au nanoparticles

Hormozi Nezhad, M. R ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1016/j.saa.2007.12.003
  3. Publisher: 2008
  4. Abstract:
  5. An indirect colorimetric method is presented for detection of trace amounts of hydroquinone (1), catechol (2) and pyrogallol (3). The reduction of AuCl4- to Gold nanoparticles (Au-NPs) by these phenolic compounds in the presence of cetyltrimethylammonium chloride (CTAC) produced very intense surface plasmon resonance peak of Au-NPs. The plasmon absorbance of Au-NPs allows the quantitative colorimetric detection of the phenolic compounds. The calibration curves derived from the changes in absorbance at λ = 568 nm were linear with concentration of hydroquinone, catechol and pyrogallol in the range of 7.0 × 10-7 to 1.0 × 10-4M, 6.0 × 10-6 to 2.0 × 10-4 M and 6.0 × 10-7 to 1.0 × 10-4 M, respectively. The detection limits were 5.3 × 10-7, 2.5 × 10-6 and 3.2 × 10-7 M for the hydroquinone, catechol and pyrogallol, respectively. The method was applied satisfactorily to the determination of phenolic compounds in water samples and pharmaceutical formulations. © 2007 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Arsenic compounds ; Chlorine compounds ; Gold ; Ketones ; Phenols ; Au nano-particles ; Colorimetric methods ; Gold nanoparticles ; Optical detection ; Phenolic compounds ; Surface plasmon peak ; Trace amounts ; Surface plasmon resonance ; Catechol ; Catechol derivative ; Hydroquinone ; Hydroquinone derivative ; Metal nanoparticle ; Nanoparticle ; Chemical model ; Chemistry ; Methodology ; Optics ; pH ; Ultraviolet spectrophotometry ; Calibration ; Catechols ; Colorimetry ; Hydrogen-Ion Concentration ; Hydroquinones ; Metal Nanoparticles ; Models, Chemical ; Nanoparticles ; Optics and Photonics ; Phenol ; Pyrogallol ; Spectrophotometry, Ultraviolet ; Water
  8. Source: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy ; Volume 71, Issue 1 , 2008 , Pages 199-203 ; 13861425 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S1386142507006919