The polynuclear aromatic hydrocarbons(PAHs) were separated by capillar
y electrophoresis with uncoated fused silica capillary(50 mu m i.d., t
otal length 50 cm, effective length 32 cm). A berate buffer solution c
ontaining sodium dodecyl sulfate, beta-cyclodextrin, and acetonitrile
was utilized. The separation was monitored by a spectrophotometer at t
he wavelength of 220 nm. The detection limits of some PAHs were in the
range of 0.1-2 mu g/mL. It is satisfactory to apply this method to th
e analysis of some PAHs in environmental samples.