title: Analysis of isomeric polycyclic aromatic hydrocarbons by charge-exchange chemical ionization mass spectrometry.
mesh_terms: D007474:Ion Exchange; D007536:Isomerism; D013058:Mass Spectrometry / Q000379:methods; D011083:Polycyclic Compounds / Q000032:analysis*
chemical_list: D011083:Polycyclic Compounds