TY - GEN
T1 - Raman microspectroscopic analysis of soot structure and reactivity
AU - Ivleva, Natalia P.
AU - Knauer, Markus
AU - Pöschl, Ulrich
AU - Niessner, Reinhard
AU - Haisch, Christoph
PY - 2008
Y1 - 2008
N2 - Raman microspectroscopy (RM), which provides fingerprint spectra and allows the distinction of a wide range of chemical substances with the spatial resolution of an optical microscope, has been applied for analysis of soot and related carbonaceous materials. Using several reference samples, we found that spectral parameters determined by curve fitting with five bands (G, D1-D4) correlate with apparent elemental to total carbon ratio, provide information about degree of graphitic structural order in soot and enable a discrimination of samples. We applied RM for the investigation of size-resolved atmospheric aerosol particles and found that RM can provide qualitative and quantitative information about the composition of samples. We investigated changes in structure and reactivity of soot upon oxidation and demonstrated that RM promises to become an efficient tool for investigation and optimization of diesel exhaust after-treatment systems. Moreover, we demonstrated the potential of the photoacoustic sensor for quantitative detection of soot emission.
AB - Raman microspectroscopy (RM), which provides fingerprint spectra and allows the distinction of a wide range of chemical substances with the spatial resolution of an optical microscope, has been applied for analysis of soot and related carbonaceous materials. Using several reference samples, we found that spectral parameters determined by curve fitting with five bands (G, D1-D4) correlate with apparent elemental to total carbon ratio, provide information about degree of graphitic structural order in soot and enable a discrimination of samples. We applied RM for the investigation of size-resolved atmospheric aerosol particles and found that RM can provide qualitative and quantitative information about the composition of samples. We investigated changes in structure and reactivity of soot upon oxidation and demonstrated that RM promises to become an efficient tool for investigation and optimization of diesel exhaust after-treatment systems. Moreover, we demonstrated the potential of the photoacoustic sensor for quantitative detection of soot emission.
UR - https://www.scopus.com/pages/publications/77955620380
M3 - Conference contribution
AN - SCOPUS:77955620380
SN - 9780841269859
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers
T2 - 235th National Meeting of the American Chemical Society, ACS 2008
Y2 - 6 April 2008 through 10 April 2008
ER -