Characterization of soil particles by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) and transmission electron microscopy (TEM).

Flogeac K; Guillon E; Aplincourt M; Marceau E; Stievano L; Beaunier P; Frapart Y M

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Characterization of soil particles by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) and transmission electron microscopy (TEM).

机译：通过X射线衍射（XRD），X射线光电子能谱（XPS），电子顺磁共振（EPR）和透射电子显微镜（TEM）表征土壤颗粒。

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Knowledge of the structure and composition of the solid phases of a soil is needed to understand the retention mechanisms of transition metals or organic pollutants on the molecular scale. With this aim, the characterization of a soil sample from the Champagne-Ardenne region was carried out using various non-destructive methods such as X-ray diffraction (XRD), transmission electron microscopy-energy dispersive X-ray spectrometry (TEM-EDX), Mossbauer and electron paramagnetic resonance (EPR) spectroscopies, X-ray photoelectron spectroscopy (XPS), and protometric studies. The combination of these techniques allowed us to obtain a precise knowledge of the solid structure and composition. We showed that soil particles consist of quartz, alumino-silicate and goethite which are partially covered by organic matter. XPS spectra showed that organic matter is preferentially coated onto an alumino-silicate surface. EPR spectroscopy revealed the presence of unexpected vanadyl moieties in the organic matter. Acid-base titrations provided information on available surface sites (0.25 mmol x g-1, i.e. 2.25 sites per nm2), and the point of zero charge pHzpc (3.9)..

机译：需要了解土壤固相的结构和组成，以了解过渡金属或有机污染物在分子尺度上的保留机理。为此，使用各种非破坏性方法（例如X射线衍射（XRD），透射电子显微镜-能量色散X射线光谱法（TEM-EDX））对香槟-阿登地区的土壤样品进行了表征。，Mossbauer和电子顺磁共振（EPR）光谱学，X射线光电子能谱（XPS）和光度法研究。这些技术的结合使我们获得了有关固体结构和组成的精确知识。我们表明，土壤颗粒由石英，铝硅酸盐和针铁矿组成，部分被有机物覆盖。 XPS光谱显示有机物优先被覆盖在硅铝酸盐表面上。 EPR光谱显示有机物中存在意外的钒基部分。酸碱滴定提供了有关可用表面位点（0.25 mmol x g-1，即每nm2 2.25个位点）和零电荷点pHzpc（3.9）的信息。

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《Agronomie》 |2005年第3期|共9页
作者
Flogeac K; Guillon E; Aplincourt M; Marceau E; Stievano L; Beaunier P; Frapart Y M;
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正文语种 eng
中图分类农业科学;
关键词
analytical methods; characterization; chemical composition; electron paramagnetic resonance spectroscopy; electrophoresis; goethite; metal ions; nondestructive testing; organic compounds; particles; photoelectron spectroscopy; pollutants; potent iometric titration; quartz; retention; silicates; soil chemical properties; soil composition; soil organic matter; soil structure; soil texture; spectral analysis; surfaces; titration; transmission electron microscopy; X ray diffraction;

机译：分析方法;表征;化学成分;电子顺磁共振光谱法;电泳;针铁矿;金属离子;无损检测;有机化合物;颗粒;光电子光谱法;污染物;电位滴定法;石英;保留;硅酸盐;土壤化学性质;土壤成分;土壤有机质;土壤结构;土壤质地;光谱分析;表面;滴定;透射电镜;X射线衍射;

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1. Characterization of soil particles by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) and transmission electron microscopy (TEM). [J] . Flogeac K, Guillon E, Aplincourt M, Agronomie . 2005,第3期

机译：通过X射线衍射（XRD），X射线光电子能谱（XPS），电子顺磁共振（EPR）和透射电子显微镜（TEM）表征土壤颗粒。
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Characterization of soil particles by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) and transmission electron microscopy (TEM).

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