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Fundamentals of Monochromatic Excitation Energy-Dispersive X-ray Fluorescence Spectrometry
1）Monochromatic Focused Excitation Technology
Micro-focus X-ray tube emission is monochromated and diffracted to the sample point via full-focusing doubly curved crystal (Johansson type DCC), achieving point-to-point high-intensity monochromatic diffraction. This significantly reduces bremsstrahlung-induced scattered background interference and enhances elemental detection sensitivity.
2）High-Performance SDD Detector
Monochromatic excitation technology synergizes with SDD detectors, maximizing count rate and resolution to enable simultaneous detection of major and trace elements.
Monochromatic X-ray Fluorescence Spectrometer MERAK-SC
Energy-dispersive X-ray fluorescence spectrometry (EDXRF) lacks capability for light element analysis and typically cannot quantify ultra-light elements (C, N, O, F, Na, etc.). Beyond low fluorescence yields, a key limitation is continuous background interference from bremsstrahlung scattering, which obscures light element signals. This is where EDXRF underperforms compared to wavelength-dispersive XRF.
MERAK-SC employs monochromatic focused excitation to dramatically improve light element sensitivity. Its ultra-thin graphene-window SDD detector enhances transmission for ultra-light elements (O, F, Na, etc.), matching the performance of large WD XRF systems.
Secondary target technology enables analysis of major elements (K-Cu).
Equipped with Holospec FP 2.0 fundamental parameters method, it rapidly develops analytical methods for diverse samples, enhancing adaptability and quantification accuracy.
- Ultra-low detection limit of light elements
Extends elemental analysis to ultra-light elements, e.g., achieving unprecedented 0.15% detection limit for fluorine (F).
Elemental Analysis Range
Light Elements: O, F, Na, Mg, Al, Si, P, S, Cl
Metal Elements: K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn
Liquid Sample Analysis
Specialized sample cup for liquid analysis.
Top-Down Geometry
Prevents optical path contamination or detector damage from surface dust/liquid spills.
Auto-Rotating Sample Stage
Software-controlled rotation improves precision for heterogeneous samples.
Temperature Control
Ambient temperature range: 24±3°C, control accuracy: ±0.3°C.
Holospec FP 2.0 Software
Powerful fundamental parameters method with visual interface for application development.
- Principle
Monochromatic excitation energy-dispersive X-ray fluorescence spectrometry
Powerful Holospec FP 2.0 software with visual interface supports diverse sample applications.
Elemental Analysis Range
Light Elements: F-Cl
Metal Elements: K-Zn (other elements configurable)
Element Detection Limits
Note: Analysis time 300s. Detection limits vary with sample matrix. Values based on aqueous matrix.Elements F Na\Mg Al\Si P\S\Cl K-Zn Detection Limit（%） 0.15 0.005 0.001 0.0002 0.0003
Repeatability
Content
Analysis Time: 30-300 seconds/sample
Stability: ±0.5% over 24 hours; <±1% within one week.
Note：Relative change in element content or intensity
- 1. Elemental analysis of cement raw materials (limestone, etc.), kiln feed, cement clinker.
2. Simultaneous rapid detection of S/Cl/F in solid waste.
3. Coal elemental composition analysis; calorific value & ash content prediction; fly ash/gangue analysis.
4. Petrochemical elemental content analysis.
5. Soil major components (oxides) & trace elements (P, S, Cl, etc.).
6. Major/minor impurity analysis in ferrous/non-ferrous metallurgy.
7. Aluminum industry elemental analysis.
8. Limestone major element analysis.
9. Magnesite elements/oxides analysis; magnesia impurity detection.
10. Graphite/carbon industry elemental analysis.
11. Lithium battery major elements & trace impurities analysis.
Simultaneous S/Cl/F Analysis in Solid WasteS/Cl/F content is mandatory for waste treatment facilities. Current methods lack simplicity and simultaneity. MERAK-SC enhances light element sensitivity via monochromatic excitation, enabling synchronous F/S/Cl/major element analysis. Holospec FP 2.0 improves precision and adaptability, with simple prep and rapid detection for scientific waste management.
Magnesite Elemental Analysis
Magnesite (MgCO₃) is the primary natural resource for magnesium refractories. Global reserves total ~12 billion tons, ~5 billion in China. Impurities (CaO, SiO₂, Fe₂O₃, Al₂O₃) degrade refractory properties and complicate processing, making impurity analysis critical.
Soil Nutrient Element Analysis
Conventional methods require multiple techniques for dozens of elements, with complex prep and low efficiency. MERAK-SC simultaneously quantifies major/trace elements (Na, Mg, Al, Si, P, S, Cl, K, Ca, Mn, Fe, Zn) in soils, offering simple prep, rapid analysis, high accuracy, and low cost.
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- Cu/Cr/Ni/Mn Ore Element Content Detection
- Elemental content analysis of Copper concentrates
- High purity metal (alloy) content analysis
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- Rapid determination of precious metal content in ternary catalyst
- Determination of element content in magnesite and magnesite
- Rapid analysis of rare earth elements content
- Rapid trace precious metal content testing
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