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Seen as different, soil clays become more important to soils and also beyond soils

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dc.contributor.authorChurchman, G.
dc.contributor.authorSingh, M.
dc.contributor.authorMarchuk, S.
dc.date.issued2018
dc.description.abstractUsing data from the literature, we pose the question of the extent to which a knowledge of soils is contributed by that of its clay fraction. In the past, soil characteristics have not related well to mineralogical analyses but we have redefined clays and also used a computer programme to more closely analyse X-ray diffraction (XRD) profiles. It was found that cation exchange capacities and specific surface areas of soil kaolinites almost always exceed those of standard kaolinites. The surfaces of soil clays are often coated by organic matter, which reduces their capacity to adsorb dissolved organic carbon (DOC). Oxidised iron is closely associated with phyllosilicate clays and enhances their capacity to adsorb DOC. Computer-aided decomposition of XRD traces show that phyllosilicates may contain several phases and react dynamically with potassium-containing solutions. Clays should be regarded as natural products with as yet undiscovered applications, including for cancer treatment.
dc.identifier.citationNew Zealand Journal of Agricultural Research, 2018; 61(3):340-346
dc.identifier.doi10.1080/00288233.2018.1428204
dc.identifier.issn0028-8233
dc.identifier.issn1175-8775
dc.identifier.urihttps://hdl.handle.net/11541.2/130809
dc.language.isoen
dc.publisherTaylor and Francis
dc.rightsCopyright 2018 The Royal Society of New Zealand Access Condition Notes: Accepted manuscript available after 1 April 2019
dc.source.urihttps://doi.org/10.1080/00288233.2018.1428204
dc.subjectsoil clays
dc.subjectorganic matter
dc.subjectiron oxides
dc.subjectXRD decomposition
dc.subjectpotassium dynamics
dc.subjectcancer treatment
dc.titleSeen as different, soil clays become more important to soils and also beyond soils
dc.typeJournal article
pubs.publication-statusPublished
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ror.mmsid9916175895301831

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