Matches in SemOpenAlex for { <https://semopenalex.org/work/W2070291894> ?p ?o ?g. }
Showing items 1 to 88 of
88
with 100 items per page.
- W2070291894 endingPage "512" @default.
- W2070291894 startingPage "501" @default.
- W2070291894 abstract "Abstract Forty humic acid (HA) samples and several related substances were reduced with Na2S2O4 and NaBH4 in order to investigate the effect of carbonyl groups including quinone on the ultraviolet and visible absorption spectra of HAs. Difference spectra of Rp and B type HAs as well as lignin due to NaBH4 reduction had a peak at 320 run, while those of A type HAs had a peak and a shoulder at different wavelengths. The difference absorbance of A type HAs in the visible range was also higher than that of Rp and B type HAs. There were very significant positive linear correlations between the difference absorbance due to NaBH, reduction and carbonyl group contents of HAs. The absorbance of the highly humified HAs at 600 run increased in 0.1 n NaOH but decreased in the phosphate buffer at pH 7 by the reduction with Na2S2O4. Decreasing rates in both cases decreased with increasing degree of humification. It was presumed that the influence of ketonic and aldehydic carbonyl groups on the visible absorption was small and that of quinones was large for the low humified HAs, P+-+++ type HAs and the two artificial HAs prepared from hydroquinone and alucose. Though the influence of quinones also increased, that of aliphatic ketone and aldehyde on the visible absorption increased with increasing degree of humification." @default.
- W2070291894 created "2016-06-24" @default.
- W2070291894 creator A5044689009 @default.
- W2070291894 creator A5076907226 @default.
- W2070291894 date "1979-12-01" @default.
- W2070291894 modified "2023-10-16" @default.
- W2070291894 title "Chemical studies on soil humic acids" @default.
- W2070291894 cites W1838855487 @default.
- W2070291894 cites W1999728125 @default.
- W2070291894 cites W2014308520 @default.
- W2070291894 cites W2025331640 @default.
- W2070291894 cites W2038030991 @default.
- W2070291894 cites W2055542851 @default.
- W2070291894 cites W2068507968 @default.
- W2070291894 cites W2075916658 @default.
- W2070291894 cites W2088240863 @default.
- W2070291894 cites W2315005057 @default.
- W2070291894 cites W2782103289 @default.
- W2070291894 doi "https://doi.org/10.1080/00380768.1979.10433192" @default.
- W2070291894 hasPublicationYear "1979" @default.
- W2070291894 type Work @default.
- W2070291894 sameAs 2070291894 @default.
- W2070291894 citedByCount "9" @default.
- W2070291894 countsByYear W20702918942018 @default.
- W2070291894 crossrefType "journal-article" @default.
- W2070291894 hasAuthorship W2070291894A5044689009 @default.
- W2070291894 hasAuthorship W2070291894A5076907226 @default.
- W2070291894 hasConcept C121332964 @default.
- W2070291894 hasConcept C125287762 @default.
- W2070291894 hasConcept C155647269 @default.
- W2070291894 hasConcept C159390177 @default.
- W2070291894 hasConcept C159750122 @default.
- W2070291894 hasConcept C161790260 @default.
- W2070291894 hasConcept C178790620 @default.
- W2070291894 hasConcept C185592680 @default.
- W2070291894 hasConcept C24890656 @default.
- W2070291894 hasConcept C2776538354 @default.
- W2070291894 hasConcept C2777550763 @default.
- W2070291894 hasConcept C2777738585 @default.
- W2070291894 hasConcept C2779825165 @default.
- W2070291894 hasConcept C2780560099 @default.
- W2070291894 hasConcept C2780965034 @default.
- W2070291894 hasConcept C39432304 @default.
- W2070291894 hasConcept C43617362 @default.
- W2070291894 hasConcept C52201283 @default.
- W2070291894 hasConcept C75473681 @default.
- W2070291894 hasConcept C98015330 @default.
- W2070291894 hasConceptScore W2070291894C121332964 @default.
- W2070291894 hasConceptScore W2070291894C125287762 @default.
- W2070291894 hasConceptScore W2070291894C155647269 @default.
- W2070291894 hasConceptScore W2070291894C159390177 @default.
- W2070291894 hasConceptScore W2070291894C159750122 @default.
- W2070291894 hasConceptScore W2070291894C161790260 @default.
- W2070291894 hasConceptScore W2070291894C178790620 @default.
- W2070291894 hasConceptScore W2070291894C185592680 @default.
- W2070291894 hasConceptScore W2070291894C24890656 @default.
- W2070291894 hasConceptScore W2070291894C2776538354 @default.
- W2070291894 hasConceptScore W2070291894C2777550763 @default.
- W2070291894 hasConceptScore W2070291894C2777738585 @default.
- W2070291894 hasConceptScore W2070291894C2779825165 @default.
- W2070291894 hasConceptScore W2070291894C2780560099 @default.
- W2070291894 hasConceptScore W2070291894C2780965034 @default.
- W2070291894 hasConceptScore W2070291894C39432304 @default.
- W2070291894 hasConceptScore W2070291894C43617362 @default.
- W2070291894 hasConceptScore W2070291894C52201283 @default.
- W2070291894 hasConceptScore W2070291894C75473681 @default.
- W2070291894 hasConceptScore W2070291894C98015330 @default.
- W2070291894 hasIssue "4" @default.
- W2070291894 hasLocation W20702918941 @default.
- W2070291894 hasOpenAccess W2070291894 @default.
- W2070291894 hasPrimaryLocation W20702918941 @default.
- W2070291894 hasRelatedWork W1971648034 @default.
- W2070291894 hasRelatedWork W1997048283 @default.
- W2070291894 hasRelatedWork W2070291894 @default.
- W2070291894 hasRelatedWork W2074299716 @default.
- W2070291894 hasRelatedWork W2332574417 @default.
- W2070291894 hasRelatedWork W2494033395 @default.
- W2070291894 hasRelatedWork W2952953690 @default.
- W2070291894 hasRelatedWork W2953021960 @default.
- W2070291894 hasRelatedWork W2989491678 @default.
- W2070291894 hasRelatedWork W757487998 @default.
- W2070291894 hasVolume "25" @default.
- W2070291894 isParatext "false" @default.
- W2070291894 isRetracted "false" @default.
- W2070291894 magId "2070291894" @default.
- W2070291894 workType "article" @default.