Shimadzu MXF-2400 X-ray Fluorescence Spectrometer

Importance of the Topic

The ability to perform rapid, non-destructive, multi-element analysis is critical for quality control, process monitoring and research across a wide range of industries. X-ray fluorescence (XRF) spectrometry offers simultaneous detection of major and trace elements at ppm levels, reducing sample preparation time and minimizing waste.

Objectives and Study Overview

This white paper presents the design and performance of the Shimadzu MXF-2400 Multi-Channel X-ray Fluorescence Spectrometer. Key objectives include enhanced sensitivity for light and heavy elements, high throughput via simultaneous analysis of up to 36 elements, reliable automation for unattended operation, and a versatile data processing system for both quantitative and qualitative determinations.

Methodology

XRF principle:

• Primary X-rays excite atoms in the sample, producing element-specific secondary (fluorescent) X-rays.
• Wavelength measurement enables qualitative identification; intensity measurement supports quantitative concentration analysis.

Analytical workflow:

• Atmosphere: vacuum, air or helium for flexibility in light‐element measurement.
• Sample loading: eight‐position turntable with swing-arm feeder for 5-second positioning and up to 1-minute analysis per sample.
• Vacuum stabilizer and gas pump ensure stable low-pressure conditions for reproducible light‐element detection.
• Optional scanning monochromator supports qualitative profile scans and FP-method quantification without standards.

Použitá instrumentace

• X-ray tube: 4 kW Rh target, thin Be window, 20–50 kV and 5–100 mA adjustable.
• Spectrometer unit: up to 36 fixed curved-crystal monochromators; optional flat-crystal scanning monochromator.
• Detectors: sealed-gas proportional counters (Ne, Ar, Kr with CO2), scintillation counters, flow proportional counter for super-light elements (Be, B, C, N, O, F).
• Electronics: microprocessor-controlled pulse counting (4×10^7 cps), pulse-height analyzer, high-precision scaler.
• Data processing: PC/AT compatible with Windows XP, high-level correction routines (drift, overlap, absorption, enhancement), automatic reporting and network connectivity.
• Sample preparation: vibration mills, briquet press, polishing unit, fusion furnace for glass beads, liquid and solid sample holders with masks.

Main Results and Discussion

The MXF-2400 achieves:

• Simultaneous determination of up to 36 elements in 1 minute with detection limits down to a few ppm.
• Sensitivity gains of up to 1.7× for light elements and 1.3× for heavy elements compared to previous models.
• Excellent long-term stability (±0.2 °C thermal control, sealed detectors with CO2 stabilization) and reproducibility (C.V. <1 % for major oxides).
• Wide dynamic range covering 0–100 % concentration in a single calibration (over 3×10^6 cps).
• Automatic start/stop scheduling, unattended multi-sample runs and e-mail notifications for completed analyses or alarms.

Benefits and Practical Applications

The MXF-2400 supports multiple sectors:

• Iron & steel: slag, ores, steels and ferroalloys.
• Nonferrous metals: copper, aluminum, magnesium and precious alloys.
• Ceramics & cement: raw mixes, clinkers, glasses, bricks.
• Electronics: semiconductors, ceramics, PCBs, batteries.
• Chemicals & petrochemicals: catalysts, polymers, oils, pharmaceuticals.
• Agriculture & environment: soils, fertilizers, wastewater, airborne dust.

Advantages include fast throughput, minimal maintenance, non-destructive measurement and real-time feedback for process control.

Future Trends and Opportunities

Emerging developments may include:

• Integration of AI and machine learning for automated peak identification and predictive maintenance.
• Enhanced networked operation with cloud-based data analytics and remote monitoring.
• Miniaturized and portable XRF modules for in-field and at-line measurements.
• Advanced multilayer crystal optics for further sensitivity gains in super-light element detection.
• Robotic sample handling for fully automated high-throughput laboratories.

Conclusion

The Shimadzu MXF-2400 offers a robust solution for simultaneous multi-element XRF analysis, combining high sensitivity, stability and automation. Its versatile instrumentation and sophisticated data processing make it suitable for a broad range of industrial and research applications, delivering reliable, non-destructive results with minimal operator intervention.

Reference

• Shimadzu Corporation. Multi-Channel X-ray Fluorescence Spectrometer MXF-2400 White Paper, 2015.