N. Ornelas-Soto, I. Aguilar-Hernández, N. K. Afseth, T. López-Luke, F. F. Contreras‐Torres, J. Wold
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Ultrasensitive detection of phenolic antioxidants by surface enhanced Raman spectroscopy
Surface-Enhanced Raman Spectroscopy (SERS) is a powerful surface-sensitive technique to study the vibrational properties of analytes at very low concentrations. In this study, ferulic acid, p-coumaric acid, caffeic acid and sinapic acid were analyzed by SERS using Ag colloids. Analytes were detected up to 2.5x10-9M. For caffeic acid and coumaric acid, this detection limit has been reached for the first time, as well as the SERS analysis of sinapic acid using silver colloids.
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