Electron spin resonance of sedimentary humic acids in relation to their aromatic character

抄録

ESR study of humic acids from lake and marine sediments was performed to obtain information on their aromatic structure. The g values of humic acids were found to be 2.0032∼2.0035. It seems likely that free radicals in them are semiquinone radicals in a condensed ring system having alicyclic rings or radicals of carbon and nitrogen in the molecule.