X-ray Fluorescence (XRF) Analysis of Solid Powders

X-ray fluorescence (XRF) analysis is a non-destructive technique used to determine the composition of solid powders. It is widely used in metallurgy, mineralogy, ceramics, environmental science, and quality control. By measuring the emitted fluorescence X-rays, multiple elements, including trace components, can be detected simultaneously.

Sample preparation

Proper sample preparation is essential for accurate analysis. Solid powders must be ground and mixed to ensure uniform composition. Two common preparation methods are:

• Pelletizing: Compressing the powder into a solid pellet for stable measurement.
• Glass bead method: Melting the sample to create a uniform glass structure, ideal for high-precision analysis.

Advantages of XRF analysis

• Multi-element detection: Analyzes several elements at once.
• Non-destructive: The sample remains intact after testing.
• High sensitivity: Detects both major and trace elements.

Limitations

XRF analysis has some constraints:

• Light elements (e.g., lithium, beryllium) are difficult to detect.
• Surface roughness may affect measurement accuracy.

XRF analysis is a powerful tool for solid powder composition analysis. With proper sample preparation and calibration, it provides accurate and efficient results across various industries.