TY - JOUR
T1 - Surface-enhanced Raman scattering for quantitative detection of ethyl carbamate in alcoholic beverages
AU - Yang, Danting
AU - Zhou, Haibo
AU - Ying, Yibin
AU - Niessner, Reinhard
AU - Haisch, Christoph
N1 - Funding Information:
Acknowledgments This work was supported by the Research Fund for the Doctoral Program of Higher Education (no. 20120101130009) and the China Scholarship Council. Natalia P. Ivleva is thanked for instruction on how to use the Raman instrument, and M. Hanzlik is thanked for TEM measurements.
PY - 2013/11
Y1 - 2013/11
N2 - Ethyl carbamate, a by-product of fermentation and storage with widespread occurrence in fermented food and alcoholic beverages, is a compound potentially toxic to humans. In this work, a new approach for quantitative detection of ethyl carbamate in alcoholic beverages, based on surface-enhanced Raman scattering (SERS), is reported. Individual silver-coated gold nanoparticle colloids are used as SERS amplifiers, yielding high Raman enhancement of ethyl carbamate in three kinds of alcoholic beverages (vodka, Obstler, and white rum). The characteristic band at 1,003 cm-1, which is the strongest and best reproducible peak in the SERS spectra, was used for quantitative evaluation of ethyl carbamate. The limit of detection, which corresponds to a signal-to-noise ratio of 3, was 9.0 × 10-9 M (0.8 μg · L-1), 1.3 × 10-7 M (11.6 μg · L-1), and 7.8 × 10-8 M (6.9 μg · L -1), respectively. Surface-enhanced Raman spectroscopy offers great practical potential for the in situ assessment and identification of ethyl carbamate in the alcoholic beverage industry.
AB - Ethyl carbamate, a by-product of fermentation and storage with widespread occurrence in fermented food and alcoholic beverages, is a compound potentially toxic to humans. In this work, a new approach for quantitative detection of ethyl carbamate in alcoholic beverages, based on surface-enhanced Raman scattering (SERS), is reported. Individual silver-coated gold nanoparticle colloids are used as SERS amplifiers, yielding high Raman enhancement of ethyl carbamate in three kinds of alcoholic beverages (vodka, Obstler, and white rum). The characteristic band at 1,003 cm-1, which is the strongest and best reproducible peak in the SERS spectra, was used for quantitative evaluation of ethyl carbamate. The limit of detection, which corresponds to a signal-to-noise ratio of 3, was 9.0 × 10-9 M (0.8 μg · L-1), 1.3 × 10-7 M (11.6 μg · L-1), and 7.8 × 10-8 M (6.9 μg · L -1), respectively. Surface-enhanced Raman spectroscopy offers great practical potential for the in situ assessment and identification of ethyl carbamate in the alcoholic beverage industry.
KW - Alcoholic beverages
KW - Ethyl carbamate
KW - Quantitative analysis
KW - Silver-coated gold nanoparticles
KW - Surface-enhanced Raman scattering
UR - http://www.scopus.com/inward/record.url?scp=84890119482&partnerID=8YFLogxK
U2 - 10.1007/s00216-013-7396-x
DO - 10.1007/s00216-013-7396-x
M3 - Article
C2 - 24154926
AN - SCOPUS:84890119482
SN - 1618-2642
VL - 405
SP - 9419
EP - 9425
JO - Analytical and Bioanalytical Chemistry
JF - Analytical and Bioanalytical Chemistry
IS - 29
ER -