X-Ray Fluorescence Spectroscopy for Laboratory Applications
1. Edition February 2021
XXIV, 472 Pages, Hardcover
150 Pictures (50 Colored Figures)
Practical Approach Book
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Provides comprehensive coverage on using X-ray fluorescence for laboratory applications
This book focuses on the practical aspects of X-ray fluorescence (XRF) spectroscopy and discusses the requirements for a successful sample analysis, such as sample preparation, measurement techniques and calibration, as well as the quality of the analysis results.
X-Ray Fluorescence Spectroscopy for Laboratory Applications begins with a short overview of the physical fundamentals of the generation of X-rays and their interaction with the sample material, followed by a presentation of the different methods of sample preparation in dependence on the quality of the source material and the objective of the measurement. After a short description of the different available equipment types and their respective performance, the book provides in-depth information on the choice of the optimal measurement conditions and the processing of the measurement results. It covers instrument types for XRF; acquisition and evaluation of X-Ray spectra; analytical errors; analysis of homogeneous materials, powders, and liquids; special applications of XRF; process control and automation.
* An important resource for the analytical chemist, providing concrete guidelines and support for everyday analyses
* Focuses on daily laboratory work with commercially available devices
* Offers a unique compilation of knowledge and best practices from equipment manufacturers and users
* Covers the entire work process: sample preparation, the actual measurement, data processing, assessment of uncertainty, and accuracy of the obtained results
X-Ray Fluorescence Spectroscopy for Laboratory Applications appeals to analytical chemists, analytical laboratories, materials scientists, environmental chemists, chemical engineers, biotechnologists, and pharma engineers.
List of Abbreviations and Symbols xix
About the Authors xxiii
1 Introduction 1
2 Principles of X-ray Spectrometry 7
2.1 Analytical Performance 7
2.2 X-ray Radiation and Their Interaction 11
2.3 The Development of X-ray Spectrometry 21
2.4 Carrying Out an Analysis 26
3 Sample Preparation 31
3.1 Objectives of Sample Preparation 31
3.2 Preparation Techniques 32
3.3 Preparation of Compact and Homogeneous Materials 39
3.4 Small Parts Materials 41
3.5 Liquid Samples 55
3.6 Biological Materials 58
3.7 Small Particles, Dust, and Aerosols 59
4 XRF Instrument Types 61
4.1 General Design of an X-ray Spectrometer 61
4.2 Comparison of Wavelength- and Energy-Dispersive X-Ray Spectrometers 63
4.2.5 Radiation Flux 75
4.3 Type of Instruments 80
4.4 Commercially Available Instrument Types 98
5 Measurement and Evaluation of X-ray Spectra 99
5.1 Information Content of the Spectra 99
5.2 Procedural Steps to Execute a Measurement 101
5.3 Selecting the Measurement Conditions 102
5.4 Determination of Peak Intensity 112
5.5 Quanti¿cation Models 117
5.6 Characterization of Layered Materials 133
5.7 Chemometric Methods for Material Characterization 140
5.8 Creation of an Application 143
6 Analytical Errors 149
6.1 General Considerations 149
6.2 Types of Errors 156
6.3 Accounting for Systematic Errors 159
6.4 Recording of Error Information 164
7 Other Element Analytical Methods 167
7.1 Overview 167
7.2 Atomic Absorption Spectrometry (AAS) 168
7.3 Optical Emission Spectrometry 169
7.4 Mass Spectrometry (MS) 172
7.5 X-Ray Spectrometry by Particle Excitation (SEM-EDS, PIXE) 173
7.6 Comparison of Methods 175
8 Radiation Protection 177
8.1 Basic Principles 177
8.2 E¿ects of Ionizing Radiation on Human Tissue 178
8.3 Natural Radiation Exposure 179
8.4 Radiation Protection Regulations 181
8.4.1 Legal Regulations 181
9 Analysis of Homogeneous Solid Samples 183
9.1 Iron Alloys 183
9.2 Ni?Fe?Co Alloys 188
9.3 Copper Alloys 189
9.4 Aluminum Alloys 191
9.5 Special Metals 192
9.5.1 Refractories 192
9.6 Precious Metals 195
9.7 Glass Material 199
9.8 Polymers 203
9.9 Abrasion Analysis 209
10 Analysis of Powder Samples 213
10.1 Geological Samples 213
10.2 Ores 216
10.3 Soils and Sewage Sludges 221
10.4 Quartz Sand 223
10.5 Cement 223
10.6 Coal and Coke 227
10.7 Ferroalloys 230
10.8 Slags 235
10.9 Ceramics and Refractory Materials 237
10.10 Dusts 239
10.11 Food 242
10.12 Pharmaceuticals 245
10.13 Secondary Fuels 246
11 Analysis of Liquids 253
11.1 Multielement Analysis of Liquids 254
11.2 Fuels and Oils 255
11.3 Trace Analysis in Liquids 261
11.4 Special Preparation Techniques for Liquid Samples 263
12 Trace Analysis Using Total Re¿ection X-Ray Fluorescence 267
12.1 Special Features of TXRF 267
12.2 Sample Preparation for TXRF 269
12.3 Evaluation of the Spectra 271
12.4 Typical Applications of the TXRF 274
13 Nonhomogeneous Samples 287
13.1 Measurement Modes 287
13.2 Instrument Requirements 288
13.3 Data Evaluation 290
14 Coating Analysis 291
14.1 Analytical Task 291
14.2 Sample Handling 292
14.3 Measurement Technology 293
14.4 The Analysis Examples of Coated Samples 294
15 Spot Analyses 313
15.1 Particle Analyses 313
15.2 Identi¿cation of Inclusions 318
15.3 Material Identi¿cation with Handheld Instruments 318
15.4 Determination of Toxic Elements in Consumer Products: RoHS Monitoring 324
15.5 Toxic Elements in Toys: Toys Standard 328
16 Analysis of Element Distributions 331
16.1 General Remarks 331
16.2 Measurement Conditions 332
16.3 Geology 333
16.4 Electronics 342
16.5 Archeometric Investigations 344
16.6 Homogeneity Tests 350
17 Special Applications of the XRF 355
17.2 Chemometric Spectral Evaluation 358
17.3 High-Resolution Spectroscopy for Speciation Analysis 361
18 Process Control and Automation 367
18.1 General Objectives 367
18.2 O¿-Line and At-Line Analysis 369
18.3 In-Line and On-Line Analysis 376
19 Quality Management and Validation 379
19.1 Motivation 379
19.2 Validation 380
Appendix A Tables 387
Appendix B Important Information 419
B.1 Coordinates of Main Manufacturers of Instruments and Preparation Tools 419
B.2 Main Suppliers of Standard Materials 422
B.3 Important Websites 425
B.4 Laws and Acts, Which Are Important for X-Ray Fluorescence 427
References 435
Index 453
Kerstin Leopold in Analytical and Bioanalytical Chemistry (29.07.2021)
Dr. Jörg Flock is Head of the Central Laboratory of ThyssenKrupp Stahl AG and well-versed with different analytical techniques, in particular with x-ray fluorescence spectroscopy. He has extensive practical experience of using this technique for the analysis of samples with different qualities and the interpretation of the acquired results.
Michael Haller has been using X-rays as an analytical tool for over thirty years, first in X-ray crystallography, then later in the development and application of polycapillary X-ray optics. Further he has developed new applications for coating thickness instruments. In 2018 he became co-owner of CrossRoads Scientific, a company specializing in the development of analytical X-ray software.
