In February--April 1988 we collected air samples at Alert in the Canadian Arctic (82.5¿N, 62.3¿W) to determine the types, concentrations, and vapor-particle relationships for polycyclic aromatic hydrocarbons (PAH) and oxygenated compounds, organochlorine (OC) pesticides, and polychlorinated biphenyls (PCB). Samples were taken using a glass fiber filter-polyurethane foam train and were analyzed by capillary gas chromatography using mass selective and electron capture detection. PAH and oxygenated compounds included dibenzofuran, biphenyl, fluorene, phenanthrene, 9-fluorenone, fluoranthene, benzofluoranthenes, pyrene, chrysene, benzopyrenes, indenopyrene, benzo-perylene, 2-methyl phenanthrene, benzanthracene, and anthracene (given in order of relative abundance, highest to lowest). OC compounds included hexachlorocyclohexanes (HCH), hexachlorobenzene, pentachlorobenzene, PCB, polychlorocamphenes, chlordanes, and the dichlorodiphenyl-trichloroethane (DDT) group (given as above). The concentration ratios of α-HCH/&ggr;-HCH (5.2--9.8) and trans to cis-chlordane (0.78-1.29) are reported. Compounds having estimated liquid-phase saturation vapor pressure (p0L)≥10-3 Pa at the average sampling temperature (245 K) were almost entirely gaseous. Those from 10-6≤p0L≤10-3 Pa were distributed between the particle and gas phases, whereas little or no gaseous component was evident for compounds having p0L≤10-6 Pa. The particle-vapor distribution of PAH and OC compared favorably to the Junge-Pankow model. ¿ American Geophysical Union 1991