Analysis of polycyclic aromatic hydrocarbons by capillary electrochromatography with laser-induced fluorescence detection
- Stanford Univ., CA (United States); and others
Electrochromatography is utilized to separate a mixture of 16 different polycyclic aromatic hydrocarbons (PAHs). A 20-30 cm section of a 75 {mu}m inside diameter fused-silica capillary column is packed with 3 {mu}m octadecylsilane (C-18) particles. A potential (up to 30 kV) is applied across the capillary column to generate electroosmotic flow. An intracavity-doubled argon-ion laser beam (257 nm) is used to detect the PAHs by laser-induced fluorescence. Efficiencies up to 400,000 plates per meter are obtained, and the reproducibility of the peak retention times is better than 2% (RSD). The limits of detection for the PAHs range between 10{sup -17}-10{sup -20} moles with a linear response spanning 4 orders of magnitude in concentration.
- OSTI ID:
- 126065
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
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