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pubmed-article:18774587pubmed:dateCreated2011-5-18lld:pubmed
pubmed-article:18774587pubmed:abstractTextHumic acids, extracted from sludge at the biologic-mechanical sewage treatment plant in Jastrzebie Zdroj, have been investigated by means of (1)H, (13)C and (31)P NMR spectroscopy. Sludge samples for studies were taken from the primary settling tank, the nitrification chamber, the digestion chamber and the sludge drying beds. The (1)H NMR analysis of humic acid extracted from sludge at various stages of sewage treatment confirmed the presence of the functional groups that are characteristic for humic substances, and the analysis showed changes in their relative intensities. The (13)C NMR indicated that the aromatisation of the humic acid increased during sewage treatment. Moreover, the analysis of the (31)P NMR spectra allowed us to observe the changes in the phosphorus groups of the studied humic acids.lld:pubmed
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pubmed-article:18774587pubmed:authorpubmed-author:PolakJJlld:pubmed
pubmed-article:18774587pubmed:authorpubmed-author:BartoszekMMlld:pubmed
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pubmed-article:18774587pubmed:year2008lld:pubmed
pubmed-article:18774587pubmed:articleTitleNMR study of the humification process during sewage sludge treatment.lld:pubmed
pubmed-article:18774587pubmed:affiliationDepartment of Environmental Chemistry and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.lld:pubmed
pubmed-article:18774587pubmed:publicationTypeJournal Articlelld:pubmed