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Quantitative Raman Reaction Monitoring Using the Solvent as Internal Standard

Aarnoutse, Petra J ; Westerhuis, Johan A

Analytical chemistry (Washington), 2005-03, Vol.77 (5), p.1228-1236 [Periódico revisado por pares]

Washington, DC: American Chemical Society

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Título:
Quantitative Raman Reaction Monitoring Using the Solvent as Internal Standard
Autor: Aarnoutse, Petra J ; Westerhuis, Johan A
Assuntos: Acrylates - chemistry ; Algorithms ; Analytical chemistry ; Calibration ; Catalysis ; Chemistry ; Chemistry, Organic ; Chromatographic methods and physical methods associated with chromatography ; Chromatography, Gas ; Exact sciences and technology ; Gas chromatographic methods ; Iodobenzenes - chemistry ; Molecular Structure ; Organic Chemistry Phenomena ; Real time ; Reference Standards ; Reproducibility of Results ; Solvents ; Solvents - chemistry ; Solvents - standards ; Spectrometric and optical methods ; Spectrum analysis ; Spectrum Analysis, Raman - instrumentation ; Spectrum Analysis, Raman - methods
É parte de: Analytical chemistry (Washington), 2005-03, Vol.77 (5), p.1228-1236
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Descrição: Despite its potential, the use of Raman spectroscopy for real-time quantitative reaction monitoring is still rather limited. The problems of fluorescence, laser instability, low intensities, and the inner filter effect often outscore the advantages as narrow bands, the use of glass fibers, and low scattering of water and glass. In this paper, we present real-time quantitative monitoring of the catalyzed Heck reaction by using the solvent as internal standard. In this way, all multiplicative distortions, e.g., laser intensity variations or absorbance of the laser light, can be corrected for. We also show that a limited amount of fluorescence does not hamper the analysis. Finally, we present a new method to correct for the inner filter effect, i.e., the absorbance of Raman scattered light by the reaction medium. Simultaneous absorption measurements of the reaction mixture enable accurate correction of Raman signals for the inner filter effect. Thus, for reaction monitoring applications, a Raman spectrometer should be equipped with an absorbance measurement device.
Editor: Washington, DC: American Chemical Society
Idioma: Inglês

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Quantitative Raman Reaction Monitoring Using the Solvent as Internal Standard

Aarnoutse, Petra J ; Westerhuis, Johan A

Washington, DC: American Chemical Society

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