Comparison of three methods for trace analysis of polycyclics.
D000397:Air Pollution / Q000032:analysis; D001580:Benzopyrenes / Q000032:analysis; D006838:Hydrocarbons / Q000032:analysis; D008722:Methods; D008832:Microchemistry; D011083:Polycyclic Compounds / Q000032:analysis*
D001580:Benzopyrenes; D006838:Hydrocarbons; D011083:Polycyclic Compounds