Since X-ray spectrometry is essentially a comparative method of analysis, it is vital that all standards and unknowns be presented to the spectrometer in a reproducible and identical manner. Any method of sample preparation must give specimens which are reproducible and which, for a certain calibration range, have similar physical properties including mass absorption coefficient, density and particle size. In addition the sample preparation method must be rapid and cheap and must not introduce extra significant systematic errors, for example, the introduction of trace elements from contaminants in a diluent.
Weitere Kapitel dieses Buchs durch Wischen aufrufen
- Sample Preparation
J. L. De Vries
- Macmillan Education UK
- Chapter 8