Lavallee, D K Determination of porphyrins at low concentration using porphinatocopper(II) phosphorescence. [electronic resource] - Analytical chemistry Sep 1977 - 1482-4 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. ISSN: 0003-2700 Standard No.: 10.1021/ac50019a005 doi Subjects--Topical Terms: CopperHumansLuminescent MeasurementsMetalloporphyrinsPorphyrins--analysisProtoporphyrins--analysisSpectrometry, Fluorescence