Naslov
Application of the shifted excitation Raman difference spectroscopy (SERDS) to the analysis of trace amounts of methanol in red wines

Autori
Volodin, Boris ; Dolgy, Sergei ; Ban, Vladimir S. ; Gracin, Davor ; Juraić, Krunoslav ; Gracin, Leo

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), ostalo

Izvornik
Proc. SPIE 8939, Biomedical Vibrational Spectroscopy VI: Advances in Research and Industry, 893901 (March 11, 2014) ; doi:10.1117/12.2059830 / Anita Mahadevan-Jansen ; Wolfgang Petrich - San Francisco (CA) : SPIE, 2014

Skup
SPIE - The International Society for Optical Engineering 8939 · February 2014

Mjesto i datum
San Francisco (CA), Sjedinjene Američke Države, 04.03.2014

Vrsta sudjelovanja
Ostalo

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Charge-coupled devices; Fiber Bragg gratings; Luminescence; Quantitative analysis; Raman spectroscopy; Semiconductor lasers; Signal to noise ratio; Silicon; Spectroscopy

Sažetak
Hifted Excitation Raman Difference Spectroscopy (SERDS) has proven an effective method for performing Raman analysis of fluorescent samples. This technique allows achieving excellent signal to noise performance with shorter excitation wavelengths, thus taking full advantage of the superior signal strength afforded by shorter excitation wavelengths and the superior performance, also combined with lower cost, delivered by silicon CCDs. The technique is enabled by use of two closely space fixed-wavelength laser diode sources stabilized with the Volume Bragg gratings (VBGs). A side by side comparison reveals that SERDS technique delivers superior signal to noise ratio and better detection limits in most situations, even when a longer excitation wavelength is employed for the purpose of elimination of the fluorescence. We have applied the SERDS technique to the quantitative analysis of the presence of trace amounts of methanol in red wines, which is an important task in quality control operations within wine industry and is currently difficult to perform in the field. So far conventional Raman spectroscopy analysis of red wines has been impractical due to the high degree of fluorescence. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Prehrambena tehnologija

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