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dc.contributor.authorGrimalt, Joan O.-
dc.contributor.authorSáiz-Jiménez, Cesáreo-
dc.date.accessioned2013-01-23T15:48:48Z-
dc.date.available2013-01-23T15:48:48Z-
dc.date.issued1989-
dc.identifierdoi: 10.1016/0048-9697(89)90149-6-
dc.identifierissn: 0048-9697-
dc.identifiere-issn: 1879-1026-
dc.identifier.citationScience of the Total Environment 81-82: 409-420 (1989)-
dc.identifier.urihttp://hdl.handle.net/10261/64886-
dc.description.abstractGas chromatography and gas chromatography-mass spectrometry have been used for the analysis of the hymatomelanic acids of four soil samples (a Typic Xerorthent, a Typic Rendoll and two Typic Xerochrepts, on shale and on granite) encompassing a wide diversity of properties in terms of pH, organic carbon, nitrogen content and associated vegetation. These humic fractions are largely composed of distributions of C12-C34 fatty acids where microbial and higher plant contributions may be observed. Mixtures of C27-C29 stera-3,5-dien-7-ones are also present, representing microbial oxidation products of Δ2-sterols. Despite the wide diversity of soils considered no major qualitative differences have been observed. In all cases the corresponding hymatomelanic acids are composed of a rather uniform pattern of aerobic microbial components together with higher plant lipids.-
dc.language.isoeng-
dc.publisherElsevier-
dc.rightsclosedAccess-
dc.titleLipids of soil humic acids. I. The hymatomelanic acid fraction-
dc.typeartículo-
dc.identifier.doihttp://dx.doi.org/10.1016/0048-9697(89)90149-6-
dc.date.updated2013-01-23T15:48:48Z-
dc.description.versionPeer Reviewed-
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