M. Krogh et al., ANALYSIS OF DRUG SEIZURES OF HEROIN AND AMPHETAMINE BY CAPILLARY ELECTROPHORESIS, Journal of chromatography, 674(1-2), 1994, pp. 235-240
Capillary electrophoresis has been used to separate heroin and ampheta
mine from structurally related compounds and commonly occurring adulte
rants in drug seizures. The method was based on micellar electrokineti
c chromatography with a running buffer of pH 9.0 containing sodium dod
ecyl sulphate as surfactant and acetonitrile as organic modifier. The
drugs were dissolved in running buffer containing crystal violet. Crys
tal violet was used to calculate relative migration times for drug ide
ntification and as internal standard for quantitative analysis. Both q
ualitative and quantitative analysis was shown to be reproducible. Bec
ause of the speed and resolving power of the method it is a powerful a
lternative to the high-performance liquid chromatographic and gas chro
matographic methods in current use for the analysis of illicit drugs.