Mathematics – Logic
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gecoa..47..497w&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 47, Issue 3, pp.497-502
Mathematics
Logic
2
Scientific paper
Four humic extracts isolated from terrestrial, mahne, plankton and freshwater sources have been investigated by pyrolysis-gas chromatography-mass spectrometry. The results show that substantial quantities of phenols (some not derived from lignin), pyrroles and nitrites (derived from proteins, nucleic acids or porphyrins) are decomposition products. Small amounts of furans (derived from carbohydrates) and unsaturated ketones (derived from polycarboxylic aliphatic acids) are also present. The results illustrate how parent material, transport factors and biological activity affect the composition of humic extracts.
Gilbert Trevor D.
Gillam A. H.
Philp Paul R.
Tate Kevin R.
Wilson Margaret A.
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