Can synchrotron micro-x-ray fluorescence spectroscopy be used to map the distribution of cadmium in soil particles?

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dc.contributor.authorMilham, PJen_AU
dc.contributor.authorPayne, TEen_AU
dc.contributor.authorLai, Ben_AU
dc.contributor.authorTrautman, RLen_AU
dc.contributor.authorCai, ZHen_AU
dc.contributor.authorHolford, Pen_AU
dc.contributor.authorHaigh, AMen_AU
dc.contributor.authorConroy, JPen_AU
dc.date.accessioned2008-04-22T04:55:15Zen_AU
dc.date.accessioned2010-04-30T05:02:31Zen_AU
dc.date.available2008-04-22T04:55:15Zen_AU
dc.date.available2010-04-30T05:02:31Zen_AU
dc.date.issued2007-10-30en_AU
dc.date.statistics2007-10en_AU
dc.description.abstractPlants take up cadmium (Cd) from the soil, and the concentration of Cd in some plant products is a health concern. Plant uptake of Cd is poorly predicted by its concentration in soils; consequently, there is interest in the binding and distribution of Cd in soil. Synchrotron micro-X-ray fluorescence spectroscopy (micro-XRFS) is the most sensitive method of observing this distribution. We used beam-line 2-ID-D of the Advanced Photon Source (APS), Argonne, to test whether this technique could map the Cd distribution in 5 soils from Greater Sydney that contained 0.3-6.4 mg Cd/kg. A subsample of one soil was spiked to contain similar to 100 mg Cd/kg. Cadmium was readily mapped in the Cd-enriched subsample, whereas in the unamended soils, only one Cd-rich particle was found; that is, sensitivity generally limited Cd mapping. We also examined a sample of Nauru phosphorite, which was a primary source of much of the Cd in farm soils on the peri-urban fringe of Greater Sydney. The phosphorite contained similar to 100 mg Cd/kg and the Cd was relatively uniformly distributed, supporting the findings of an earlier study on an apatite from Africa. The micro-XRFS at beam-line 2-ID-D of the APS can be reconfigured to increase the sensitivity at least 10-fold, which may allow the distribution of Cd and its elemental associations to be mapped in particles of most agricultural soils and facilitate other spectroscopic investigations. © 2007, CSIRO Publishingen_AU
dc.identifier.citationMilham, P. J., Payne, T. E., Lai, B., Trautman, R. L., Cai, Z., Holford, P., et al. (2007). Can synchrotron micro-x-ray fluorescence spectroscopy be used to map the distribution of cadmium in soil particles? Australian Journal of Soil Research, 45(8), 624-628. doi:10.1071/SR06179en_AU
dc.identifier.govdoc1157en_AU
dc.identifier.issn0004-9573en_AU
dc.identifier.issue8en_AU
dc.identifier.journaltitleAustralian Journal of Soil Researchen_AU
dc.identifier.pagination624-628en_AU
dc.identifier.urihttp://dx.doi.org/10.1071/SR06179en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1096en_AU
dc.identifier.volume45en_AU
dc.language.isoenen_AU
dc.publisherCSIRO Publishingen_AU
dc.subjectSynchrotronsen_AU
dc.subjectSpectroscopyen_AU
dc.subjectFluorescenceen_AU
dc.subjectSoilsen_AU
dc.subjectCadmiumen_AU
dc.subjectPhosphoritesen_AU
dc.titleCan synchrotron micro-x-ray fluorescence spectroscopy be used to map the distribution of cadmium in soil particles?en_AU
dc.typeJournal Articleen_AU
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