MERAK-SC（F-Zn） - Monochromatic excitation XRF series

Overview
The principle of monochromatic excitation-energy dispersive X-ray fluorescence spectrometer

（1）Monochromatic focusing excitation technology
The X-ray tube emission spectrum is monochromatic and diffracted to the sample point by a fully focused hyperboloid curved crystal (Johansson type DCC), which realizes point-to-point monochromatic high-intensity diffraction, and greatly reduces the backgroud bremsstrahlung radiation in the X-ray tube emission spectrum through the sample, improving the element detection sensitivity.

（2）High performance SDD detector
Monochromatic technology and SDD detectors are a match made in heaven. The counting rate and resolution of SDD detectors can be fully utilized, which further improves the ability of simultaneous detection of major elements and trace elements in samples.

Monochromatic excitation X-ray fluorescence spectrometer-MERAK-SC

Energy dispersive X-ray fluorescence spectrometer (ED XRF) has insufficient ability to analyze light elements. For example, it cannot analyze ultra-light elements such as C, N, O, F, and Na. in addition to the low fluorescence yield of light elements, the continuous background interference caused by bremsstrahlung in the X-ray tube emission spectrum also overwhelms the fluorescence signals of light elements. which is the main aspect where energy dispersive is inferior to wavelength dispersive fluorescence spectrometers.

MERAK-SC adopts the monochromatic excitation technology, which greatly improves the detection sensitivity of light elements. In addition, the use of ultra-thin graphene window silicon drift detectors further improves the pass rate of light elements, which makes the analysis of ultra-light elements (O, F, Na) possible. etc.) is not inferior to WD XRF.

At the same time, the secondary target technology is used to realize the analysis of the major element (K-Cu) in the sample.

Equipped with the fast fundamental parameter method (Fast FP 2.0), various analysis methods can be quickly established,which improves sample adaptability and quantitative accuracy.
• Ultra-low detection limit of light elements
MERAK-SC extends the scope of elemental analysis to ultra-light elements, such as F element detection limit reached 0.15%。

• 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
Sample cups for liquid sample analysis；

• Design of irradiation above
Optical path contamination or damage to expensive detectors is avoided due to dust on the sample surface and liquid spills;
• Spin device
The use of spin device improves the detection accuracy of inhomogeneous samples
• Temperature control
The ambient temperature range is 24±3℃, and the temperature control accuracy is ±0.3℃;

• Equipped with the fast fundamental parameter method (Fast FP 2.0)
Powerful Fast FP software and visual operation interface support application development of various samples
• Principles
Monochromatic excitation-energy dispersive X-ray fluorescence spectrometer

• Elemental Analysis Range
Light elements：F-Cl
Metal element：K-Zn（Additional elemental analysis can be configured）

• Elemental detection limit

Elements F Na\Mg Al\Si P\S\Cl K-Zn

Detection limit（%） 0.15 0.005 0.001 0.0002 0.0003

Note：it obtained from the distilled water test for 300 s.The detection limit is related to the sample matrix.

• Repeatability

• Measure time
30s-300s per sample

• Stability
Element content (intensity) drift over 24-hour＜±3%
Drift within a week＜±5%
note：Relative change in element content or intensity
1. Analysis of element content of cement industry raw materials (limestone, etc.), kiln raw meal, cement clinker, etc.;
2. Simultaneous rapid detection of sulfur, chlorine and fluorine content in solid waste;
3. Analysis of coal element composition in coal industry; prediction of coal calorific value and ash content; element composition analysis of fly ash and coal gangue;
4. Analysis of element content in petrochemical industry;
5. Content analysis of soil main components (oxides) and trace elements (P, S, Cl, etc.);
6. Analysis of major elements and trace impurity elements in iron and steel smelting and non-ferrous smelting industries;
7. Analysis of element content in aluminum industry;
8. Content analysis of major elements in limestone;
9. Analysis of magnesite element and oxide content, analysis of magnesia impurity element content;
10. Analysis of element content in graphite and carbon industry;
Analysis of major elements and trace impurities in lithium batteries;
Simultaneous and rapid determination of sulfur, chlorine and fluorine content in solid waste
The content of sulfur, chlorine and fluorine in solid waste and hazardous waste is a must-check item for solid waste disposal enterprises. At present, there is no method and technology for simple operation and simultaneous analysis. The single-wavelength X-ray fluorescence spectrometer MERAK-SC greatly improves the sensitivity of light elements through the monochromatic focusing excitation technology, which can simultaneously analyze the content of fluorine, sulfur, chlorine and major elements in the sample. The fast fundamental parameter method greatly improves the analysis accuracy and broadens the adaptability of samples, and the sample processing is simple and the detection speed is fast, which provides scientific data support for solid waste recovery and disposal.

Magnesite element content detection

Magnesite is the silicate mineral of magnesium and the most important natural mineral raw material for manufacturing magnesium containing refractories. The world's Magnesite reserves are about 12 billion tons, of which China's is about 5 billion tons, accounting for a very large proportion. The chemical composition of magnesite is MgCO3, and other oxides such as Cao， SiO2, Fe2O3 and Al2O3 are impurities. When the content of impurities in magnesite is large, its fire resistance will be seriously reduced and the production process will be difficult. Therefore, it is particularly important to analyze the content of impurity elements.

Elemental content analysis of soil nutrients
Major elements and trace elements in soil affect plant growth. Various chemical analysis methods or instruments are used to analyze the content of more than a dozen elements in soil. The sample processing is complicated, and the methods are cumbersome and inefficient.
Monochromatic excitation X-ray fluorescence spectrometry for simultaneous detection of sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, potassium, calcium, manganese, iron, zinc and other major elements and trace elements in soil analysis, with simple sample processing , analysis speed, high precision, low cost and other characteristics, is a powerful tool for the detection of nutrient elements in soil.

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Elements	F	Na\Mg	Al\Si	P\S\Cl	K-Zn
Detection limit（%）	0.15	0.005	0.001	0.0002	0.0003