Is. Lurie et al., Profiling of impurities in heroin by capillary electrochromatography and laser-induced fluorescence detection, J CHROMAT A, 924(1-2), 2001, pp. 421-427
Capillary electrochromatography (CEC) with laser-induced fluorescence (LIF)
detection was investigated for the analysis of acidic and neutral impuriti
es in heroin. The phenanthrene-like heroin impurities exhibit high native f
luorescence when excited with a doubled argon ion laser (operating at 257 n
m). The limit of detection for acetylthebaol is 66 pg ml(-1). CEC-LIF analy
sis of heroin samples of different geographical origin gave distinguishable
peak-enriched chromatograms. A sulfonic acid C-12 polymer monolith column
provided similar resolving power to a 1.5 mm non-porous ODS column for the
isocratic analysis of a refined heroin sample. Analysis of a crude heroin s
ample via a multi-step gradient CEC resolved a significantly higher number
of peaks than gradient high-performance liquid chromatography or micellar e
lectrokinetic capillary chromatography. Published by Elsevier Science B.V.