This paper studies the analytical method for determination of polycyclic aromatic hydrocarbon (PAHs) in aerosol by high performance liquid chromatography (HPLC) with fluorescence detector, according to the structure of PAHs and its characteristic of fluorescence emission. The best excitation wavelength and emission wavelength of PAHs are obtained by wavelength program. Thirteen PAHs are separated successfully by multiple-unit gradient method using Chromsep 3μm chromatograph column and methanol-w...