Spectroscopic investigations of mobility and speciation of fertilizer-derived copper, manganese, and zinc in calcareous soils

摘要：

We employed a combination of several synchrotron based X-ray techniques namely, μ-X-ray fluorescence (μ- XRF); μ-X-ray absorption near edge structure spectroscopy (μ- XANES); μ-X-ray diffraction (μ-XRD) and bulk XANES/extended X- ray absorption spectroscopy (EXAFS) and XRD, to speciate different fertilizer derived-Cu, -Mn, and -Zn in highly calcareous soils to understand the chemistry underlying the observed differential behaviour (plant response, plant availability and mobility) of fluid and granular micronutrient forms. Combined use of different synchrotron based spectroscopic techniques suggested that, when fluid micronutrients were applied to soil, Cu, Mn, and Zn remained in comparatively more soluble solid forms whereas granular Mn and Zn tended to transform into comparatively less soluble solid forms.

关键词： fertilizer-derived soil Mn Zn and Cu speciation mobility solubility

作者: Ganga M. Hettiarachchi Mike J. McLaughlin Kirk G. Scheckel David J. Chittleborough Enzo Lombi Mathew Newville

作者单位: School of Earth and Environmental Sciences, The University of Adelaide, Waite Campus, Glen Osmond, S School of Earth and Environmental Sciences, The University of Adelaide, Waite Campus, Glen Osmond, S National Risk Management Research Laboratory, US Environmental Protection Agency, 5995 Center Hill A CSIRO Land and Water, PMB 2, Glen Osmond, SA 5064, Australia GSECARS, The University of Chicago, Chicago, IL 60637 USA

会议类型: 国际会议

会议名称: 第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)

会议地点: 北京

会议语种:英文

页码: 311-312

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）