Advances in the Use of Synchrotron Radiation to Elucidate Environmental Interfacial Reaction Processes and Mechanisms in the Earths Critical Zone

摘要：

The employment of bright light sources generated at synchrotrons has greatly advanced our understanding of important environmental interfacial (mineral/water, mineral/microbe, plant/soil) reaction processes in the soil, environmental, and geological sciences over the past two decades. This plenary paper will provide background on principles and types of synchrotron radiation techniques with an emphasis on the use of synchrotron-based X-ray absorption spectroscopy (XAS), X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD) and microtomography to elucidate speciation of contaminants in heterogeneous soils, surface precipitation phenomena, mechanisms of rapid redox transformations, microbial transformations on mineral surfaces, air and terrestrial emanated particulate reactivity and composition, and metal reactivity and speciation in hyperaccumulator plants.

关键词： Biogeochemical processes Environmental interfaces Molecular scale Spatial and temporal scales Surface spectroscopy

作者: Donald Lewis Sparks

作者单位: Department of Plant and Soil Sciences,Center for Critical Zone Research,Delaware Environmental Institute,University of Delaware,Newark,Delaware 19716,USA

会议类型: 国际会议

会议名称: The International Symposium of Molecular Environmental Soil Science at the Interfaces in the Earths Critical Zone(地球关键区界面反应：分子水平环境土壤科学国际会议)

会议地点: 杭州

会议语种:英文

页码: 3-4

在线出版日期: 2009-10-10（万方平台首次上网日期，不代表论文的发表时间）