Matches in SemOpenAlex for { <https://semopenalex.org/work/W2016200997> ?p ?o ?g. }
Showing items 1 to 92 of
92
with 100 items per page.
- W2016200997 endingPage "366" @default.
- W2016200997 startingPage "361" @default.
- W2016200997 abstract "Fulvic and humic acids fractionated by gel chromatography on Sephadex G-50 have been investigated by 1H NMR and i.r. spectroscopic techniques. Fulvic acid gives rise to only one significant fraction (FA-I) whose spectrum does not substantially differ from that of the unfractionated sample. The HA sample is separated into a high (HA-I, nominal mol. wt > 10,000) and a low molecular weight fraction (HA-II, nominal mol. wt 500–10,000). The two fractions show worthwhile differences in the 1H NMR spectra. Signals belonging to protons of long-chain aliphatic hydrocarbons or acids are present only in the HA-I fraction, which also displays a lower content of aromatic protons than the HA-II fraction. The pattern of the broad and intense absorption in the range 2.9 and 5.0 ppm of the two spectra is different. On the basis of the i.r. spectra, it has been suggested that this might be due to a different distribution of structures as polysaccharides. It seems likely that the non-humic substances are trapped in the voids of the high molecular wight polymer. The results obtained indicate that humic fractions narrower than the original material still show a high degree of polydispersity. The overall percentage distribution of chemical structures in humic fractions with varying molecular weights is different." @default.
- W2016200997 created "2016-06-24" @default.
- W2016200997 creator A5003202611 @default.
- W2016200997 creator A5048614373 @default.
- W2016200997 creator A5066012306 @default.
- W2016200997 creator A5074497065 @default.
- W2016200997 date "1981-01-01" @default.
- W2016200997 modified "2023-09-27" @default.
- W2016200997 title "1H NMR and i.r. spectroscopic investigations on soil organic fractions obtained by gel chromatography" @default.
- W2016200997 cites W1484924338 @default.
- W2016200997 cites W1975217161 @default.
- W2016200997 cites W1990656150 @default.
- W2016200997 cites W2003539081 @default.
- W2016200997 cites W2014701651 @default.
- W2016200997 cites W2016152702 @default.
- W2016200997 cites W2076126104 @default.
- W2016200997 cites W2076290647 @default.
- W2016200997 cites W2082393691 @default.
- W2016200997 cites W2087737602 @default.
- W2016200997 cites W2089050101 @default.
- W2016200997 cites W2092817627 @default.
- W2016200997 doi "https://doi.org/10.1016/0038-0717(81)90077-8" @default.
- W2016200997 hasPublicationYear "1981" @default.
- W2016200997 type Work @default.
- W2016200997 sameAs 2016200997 @default.
- W2016200997 citedByCount "9" @default.
- W2016200997 crossrefType "journal-article" @default.
- W2016200997 hasAuthorship W2016200997A5003202611 @default.
- W2016200997 hasAuthorship W2016200997A5048614373 @default.
- W2016200997 hasAuthorship W2016200997A5066012306 @default.
- W2016200997 hasAuthorship W2016200997A5074497065 @default.
- W2016200997 hasConcept C100817775 @default.
- W2016200997 hasConcept C113196181 @default.
- W2016200997 hasConcept C11432220 @default.
- W2016200997 hasConcept C121332964 @default.
- W2016200997 hasConcept C1276947 @default.
- W2016200997 hasConcept C149629883 @default.
- W2016200997 hasConcept C158117686 @default.
- W2016200997 hasConcept C163111631 @default.
- W2016200997 hasConcept C163994747 @default.
- W2016200997 hasConcept C178790620 @default.
- W2016200997 hasConcept C181199279 @default.
- W2016200997 hasConcept C185592680 @default.
- W2016200997 hasConcept C2780560099 @default.
- W2016200997 hasConcept C2780965034 @default.
- W2016200997 hasConcept C43617362 @default.
- W2016200997 hasConcept C4839761 @default.
- W2016200997 hasConcept C521977710 @default.
- W2016200997 hasConcept C63179538 @default.
- W2016200997 hasConcept C67787023 @default.
- W2016200997 hasConcept C71240020 @default.
- W2016200997 hasConceptScore W2016200997C100817775 @default.
- W2016200997 hasConceptScore W2016200997C113196181 @default.
- W2016200997 hasConceptScore W2016200997C11432220 @default.
- W2016200997 hasConceptScore W2016200997C121332964 @default.
- W2016200997 hasConceptScore W2016200997C1276947 @default.
- W2016200997 hasConceptScore W2016200997C149629883 @default.
- W2016200997 hasConceptScore W2016200997C158117686 @default.
- W2016200997 hasConceptScore W2016200997C163111631 @default.
- W2016200997 hasConceptScore W2016200997C163994747 @default.
- W2016200997 hasConceptScore W2016200997C178790620 @default.
- W2016200997 hasConceptScore W2016200997C181199279 @default.
- W2016200997 hasConceptScore W2016200997C185592680 @default.
- W2016200997 hasConceptScore W2016200997C2780560099 @default.
- W2016200997 hasConceptScore W2016200997C2780965034 @default.
- W2016200997 hasConceptScore W2016200997C43617362 @default.
- W2016200997 hasConceptScore W2016200997C4839761 @default.
- W2016200997 hasConceptScore W2016200997C521977710 @default.
- W2016200997 hasConceptScore W2016200997C63179538 @default.
- W2016200997 hasConceptScore W2016200997C67787023 @default.
- W2016200997 hasConceptScore W2016200997C71240020 @default.
- W2016200997 hasIssue "5" @default.
- W2016200997 hasLocation W20162009971 @default.
- W2016200997 hasOpenAccess W2016200997 @default.
- W2016200997 hasPrimaryLocation W20162009971 @default.
- W2016200997 hasRelatedWork W2001438657 @default.
- W2016200997 hasRelatedWork W2011628519 @default.
- W2016200997 hasRelatedWork W2016200997 @default.
- W2016200997 hasRelatedWork W2061265726 @default.
- W2016200997 hasRelatedWork W2084914612 @default.
- W2016200997 hasRelatedWork W2096649259 @default.
- W2016200997 hasRelatedWork W2112036997 @default.
- W2016200997 hasRelatedWork W2244784171 @default.
- W2016200997 hasRelatedWork W2316016734 @default.
- W2016200997 hasRelatedWork W2382637898 @default.
- W2016200997 hasVolume "13" @default.
- W2016200997 isParatext "false" @default.
- W2016200997 isRetracted "false" @default.
- W2016200997 magId "2016200997" @default.
- W2016200997 workType "article" @default.