Analysis of Glass with the ARL QUANT’X

Význam tématu

The accurate determination of oxide composition in glass is essential for controlling its optical, mechanical and chemical properties in applications ranging from architectural glazing to specialty containers. Rapid and reliable analysis supports quality control, process optimization and material certification in both manufacturing and research laboratories.

Cíle a přehled studie / článku

This application note demonstrates the use of the ARL QUANT’X energy-dispersive X-ray fluorescence (EDXRF) spectrometer for quantitative analysis of major and minor oxides in flat glass samples. The goal is to establish calibration, assess detection limits, verify repeatability and illustrate practical workflows for routine glass analysis.

Použitá metodika a instrumentace

Methodology for glass analysis:

• Sample preparation: 14 flat glass reference materials cleaned with deionized water and tissue, measured directly without fusion or milling.
• Excitation conditions: Three vacuum-based setups optimized for low-Z elements (Na, Mg, Al, Si, S), mid-Z elements (K, Ca) and higher-Z elements (Ti, Fe, Ba), with live times of 120 s, 60 s and 60 s respectively (total 240 s).

Instrument configuration:

• ARL QUANT’X EDXRF spectrometer.
• 50 kV, 50 W rhodium or silver target X-ray tube.
• Latest-generation silicon drift detector (SDD).
• Nine primary filters for optimized peak-to-background across elements from F to Am.
• Optional vacuum or helium flush to enhance light element sensitivity.

Hlavní výsledky a diskuse

Calibration and linearity:

• Oxide concentration ranges cover Na2O (1.85–14.4 %), MgO (0.01–3.9 %), Al2O3 (0.12–5.7 %), SiO2 (58–100 %), SO3 (0.05–0.28 %), K2O (0.04–13.5 %), CaO (0.01–11 %), TiO2 (0.01–0.10 %), Fe2O3 (0.02–0.34 %), BaO (0.003–5 %).
• Correlation coefficients (R2) above 0.96 for all oxides; most exceed 0.99, indicating excellent linear response.
• Root mean square error (RMSE) values in the 0.002–0.695 % range, supporting accurate quantification.
• Limits of detection (LoD) in the low ppm range for minor oxides; major components (SiO2, Na2O, CaO) exceed high concentration thresholds so LoD not relevant.

Repeatability:

• Ten replicate measurements on two flat glass samples yield relative standard deviations below 0.3 % for all major oxides and below 5 % for minor components at low concentrations.

Přínosy a praktické využití metody

The ARL QUANT’X EDXRF method offers:

• Non-destructive, direct analysis of flat glass without complex sample preparation.
• Rapid throughput with total live time of 240 s per sample.
• High precision and accuracy for routine quality control and R&D laboratories.
• Capability to monitor both major and trace oxides in a single instrument.

Budoucí trendy a možnosti využití

Emerging developments and applications may include:

• Integration of advanced chemometric calibration models for improved multielement accuracy.
• Automation and robotic sample handling to enhance productivity in high-throughput environments.
• Portable or benchtop EDXRF solutions for in-field or on-site glass inspection.
• Application expansion to colored or specialty glass types through extended calibration sets.

Závěr

The ARL QUANT’X EDXRF spectrometer demonstrates reliable, accurate and fast quantitative oxide analysis of flat glass samples. Its high linearity, low detection limits and excellent repeatability make it an ideal tool for routine glass quality control, process monitoring and research applications.

Reference

• Thermo Fisher Scientific. Application Note AN41951: Analysis of Glass with the ARL QUANT’X, 2017.