title: A possible relation between pKa 1  and lipid solubility and the amounts excreted in urine of some tobacco alkaloids given to man.
mesh_terms: D000042:Absorption; D000470:Alkaloids / Q000378:metabolism / Q000652:urine*; D002610:Cheek / Q000378:metabolism; D002849:Chromatography, Gas; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008055:Lipids; D009061:Mouth Mucosa / Q000378:metabolism; D009538:Nicotine / Q000652:urine*; D010947:Plants, Toxic; D012995:Solubility; D014026:Nicotiana
chemical_list: D000470:Alkaloids; D008055:Lipids; D009538:Nicotine