Three-Dimensional Chemical Mapping with a Confocal XRF Setup

被引：24

作者：

Luehl, Lars ^{[1
]}

Mantouvalou, Ioanna ^{[1
]}

Schaumann, Ina ^{[2
]}

Vogt, Carla ^{[2
]}

Kanngiesser, Birgit ^{[1
]}

机构：

[1] Tech Univ Berlin, Berlin, Germany

[2] Leibniz Univ Hannover, D-30167 Hannover, Germany

来源：

ANALYTICAL CHEMISTRY | 2013年 / 85卷 / 07期

关键词：

RAY; RECONSTRUCTION; SPECTROSCOPY; XANES;

D O I：

10.1021/ac303749b

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new approach for the nondestructive reconstruction of stratified systems with constant elemental composition but with varying chemical compounds has been developed. The procedure is based on depth scans with a confocal X-ray fluorescence setup at certain energies near absorption edges. These so-called marker energies, where XAFS signals of the involved chemical compounds differ significantly, can also be used to uncover the chemical composition and its topology. A prominent field of application is homogeneous material that is degraded due to chemical reactions like oxidation or reduction. A procedure for the semiquantitative reconstruction of stratified material by means of depth scans at marker energies is elaborated and validated and a three-dimensional mapping is presented.

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收藏

页码：3682 / 3689

页数：8

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