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dc.contributor.authorSardessai, S.
dc.date.accessioned2009-01-25T05:48:20Z
dc.date.available2009-01-25T05:48:20Z
dc.date.issued1995
dc.identifier.citationIndian Journal of Marine Sciences, Vol.24; 119-127p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/2318
dc.description.abstractHumic and fulvic acids isolated from some of the shelf, slope and offshore sediments of the Arabian Sea were studied. The molecular weight, functional groups, elemental composition and infrared spectra were examined. Humic substances, dominated by humic acids contributed 22-53% of the sedimentary organic matter. The humic acids in turn are dominated by the high molecular weight fraction (> 300000). A major portion of fulvic acids was mostly present as less than 10000 molecular weight fraction. The elemental composition ranges of HA and FA are C: 60.3-50.3%, H: 6.9-5.7% and N: 4.1-2.0% and C: 46.5-28.1%, H: 8.9-3.6% and N: 4.8-1.6% respectively. The C/N ratio points out to the dominance of terrigenous matter in the formation of humic substances. The infrared spectra of humic acids and fulvic acids although similar exhibited perceptible variations that could be interpreted in terms of changing phenolic, carboxylic and nitrogen contents
dc.language.isoen
dc.publisherNISCAIR, CSIR
dc.rightsCopyright [1995]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjectfulvic acids
dc.subjecthumic acids
dc.subjectsediments
dc.subjectoffshore
dc.subjectinfrared spectroscopy
dc.titleCharacteristics of humic and fulvic acids in Arabian Sea sediments
dc.typeJournal Article


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