title: Trace determination of nitrogen-containing drugs by surface enhanced Raman scattering spectrometry on silver colloids.
authors: E L
authors: EL
authors: Torres
authors: J D
authors: JD
authors: Winefordner
mesh_terms: D003102:Colloids; D009584:Nitrogen / Q000032:analysis*; D004364:Pharmaceutical Preparations / Q000032:analysis*; D012834:Silver; D013059:Spectrum Analysis, Raman
chemical_list: D003102:Colloids; D004364:Pharmaceutical Preparations; D012834:Silver; D009584:Nitrogen