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X-Ray Fluorescence Spectrometer

X-ray fluorescence spectrometer used in laboratory

What is x-ray fluorescence spectrometer?

X-ray fluorescence spectrometer (XRF) is the sample being analyzed under X-ray irradiation emitted X-rays, which contains information on the chemical composition of the sample being analyzed, is the analysis of the above X-ray fluorescence to determine the content of each component in the sample being measured instrument.
XRF is a fast, accurate, and economical multi-element analysis method commonly used in materials science, life science, environmental science, etc. Meanwhile, an X-ray fluorescence spectrometer is also one of the preferred instruments in field analysis and process control analysis.

Application of x-ray fluorescence spectrometer

X-ray fluorescence analysis technology driven by the continuous improvement and development of X-ray fluorescence spectrometers has been widely used in many departments and fields such as metallurgy, geology, minerals, petroleum, chemical, biological, medical, criminal investigation, archaeology, etc. X-ray fluorescence analysis has not only become an important analytical tool for testing chemical elements, physical phases, chemical stereo structures, physical evidence materials, non-destructive testing of products and material quality, medical examination of the human body, and photolithographic examination of microcircuits, etc. It is an important analytical tool for medical examination and lithographic inspection of microcircuits.

X-ray fluorescence spectrometer working principle

The working principle of XRF spectrometer is as follows,
Fluorescence, as the name implies, is the light that is emitted when exposed to light.
From the knowledge of atomic physics we know that each chemical element atom has its specific energy level structure, its outer electrons are running in their respective fixed orbits with their unique energy, and the inner electrons break away from the nucleus when irradiated by X-rays of sufficient energy and become free electrons, we say that the atom is excited and in an excited state, at which time the other outer electrons fill this At this point, other outer electrons fill this vacancy, which is called a leap, and at the same time emit energy in the form of emitted X-rays. Since the atomic level structure of each element is specific, the energy of the X-rays emitted when it is excited and leaps are also specific and are called characteristic X-rays. By determining the energy of the characteristic X-rays, the presence of the corresponding element can be determined, and the intensity of the characteristic X-rays (or the number of X-rays photons) represents the content of the element.
The knowledge of quantum mechanics tells us that X-rays have wave-particle duality and can be seen as both particles and electromagnetic waves. There is a one-to-one correspondence between the energy when viewed as a particle and the wavelength when viewed as an electromagnetic wave. This is the famous Planck formula: E=hc/λ. Both the energy and the wavelength can be measured to analyze the corresponding elements with the same effect.

X-ray fluorescence spectrometer structure

Multifunctional sample device
A. Sample type: solid, liquid, powder, plating.
B.Sample tray: automatic rotating measuring device.
C. Sample chamber environment: air, vacuum, and helium can be selected. Automatic control by software, no manual operation.

Excitation system

The excitation system is designed with a unique inverted right-angle optical structure. The 50KV low-power X-ray generator is used as the excitation source. The primary X-rays generated from the X-ray tube are passed through the filter to directly excite the sample, and the excitation conditions are selected to obtain the best analysis results. It is composed of electronic circuit parts such as a high voltage generator, X-ray generator, and digital control display system.
A. High voltage generator: The voltage and current are automatically controlled and displayed by the software.
B. X-ray generator: using tough radiation type, low power, natural cooling, high life of the X-ray tube, and according to the actual application needs to choose the target material. High excitation efficiency for light elements such as Na, Mg, Al, Si, S, etc.

X-ray detection system
International leading X-ray detection system, electrically cooled high-resolution high count rate detector: thin window for Fe 5.9keV X-ray count rate of 1000CPS at a resolution of 140eV. High sensitivity and resolution for light elements Na, Mg, Al, Si, S, etc.

Advanced original energy spectrometer electronics system
Originally imported amplifier and other signal processors: adapt to high resolution and high counting rate, with international advanced level; automatic adjustment of amplification.

Types of x-ray fluorescence spectrometer

Wavelength dispersive X-ray fluorescence spectrometer(WD-XRF)

WD-XRF uses a crystal for spectroscopy and a detector to receive the signal of diffracted characteristic X-rays. The wavelengths of the characteristic X-rays produced by each element in the sample and the intensity of each wavelength can be obtained by synchronizing the motion of the spectroscopic crystal and the detector, and qualitative and quantitative analysis can be performed accordingly. This instrument was created in the 1950s, and because of the possibility of simultaneous multi-component determination of complex systems, it has been viewed with great interest, especially in the geological sector, where it has been deployed successively, and the speed of analysis has increased significantly and played an important role.

Energy dispersive X-ray fluorescence spectrometer(ED-XRF)

ED-XRF uses an X-ray tube to generate primary X-rays to irradiate the sample, and the resulting characteristic X-rays (fluorescence) enter directly into the semiconductor detector, allowing qualitative and quantitative analyses to be performed.

X-ray fluorescence spectrometer specifications

Portable x-ray fluorescence spectrometer

Light tube voltage 50kV
Output power50W
Anode angle12.5 degrees
Maximum filament current1.7A
1. Portable x-ray fluorescence spectrometer adopts a new optical circuit design, which can solve the negative impact of the air optical circuit on the measurement CI to the maximum extent and ensure the lower detection limit and stability of chlorine.

2. It can automatically set the light tube power according to the sample material, shape, and size, which can not only prolong the light tube life but also give full play to the detector performance.

Handheld fluorescence spectrometer

Excitation source AU, Ag, W, Pd
Voltage 50kv
1. Handheld fluorescence spectrometer adopts a one-button operation to remove complicated operation options and effectively prevent human misuse.

2. Software exit and automatic shutdown, user can customize the shutdown time.

3. Configuration of automatic calibration of the instrument, no manual operation.

How to use x-ray fluorescence spectrometer?

The basic operation steps of X-ray fluorescence spectrometer.

Turn on the X-ray fluorescence spectrometer

a. Turn on the power-off protection switch, and at the same time check whether there is any abnormal phenomenon, if there is a tripping situation, the reason should be identified.

b. Turn on the voltage regulator power switch, if it is UPS, the bypass switch behind must be in the off state.

c. Turn on the instrument host power switch, turn on the computer after the host is ready, open the instrument accessories, run the instrument workstation after the connection is ready, check the instrument connection for any abnormality and check the instrument vacuum.

d. Twist the key in front of the host clockwise 90° to open the high-pressure switch, check the cooling water flow of the X-ray tube, the liquid level of liquid nitrogen, and the temperature, and open the detector at high pressure after normal.

e. Instrument stability after the correction of the instrument, to understand the operating conditions of the instrument.

Turn off the X-ray fluorescence spectrometer

a. After the sample test is finished and the test file is saved, turn off the detector high voltage, turn off the high voltage switch by twisting the key in front of the main unit 90° counterclockwise, exit the workstation and close all running programs.

b. Turn off the computer mainframe.

Precautions for x-ray fluorescence spectrometer

XRF is widely used in our production, we will also consider a variety of factors when buying the instrument, but we bought it in the later use of the process and also has some notes that need to follow so that the X-ray fluorescence spectrometer to better serve us.

XFR spectrometer working environment

In general, the X-ray fluorescence spectrometer has no special requirements on the use environment, but since the X-ray fluorescence spectrometer is a high precision instrument, to ensure the accuracy of the test value and prolong the service life of the instrument, it is recommended to keep the temperature in the use environment at 20±5℃, humidity below 70%, and the instrument power supply voltage stable at 220V±5V, etc.

XRF power on and off sequence

X-Ray fluorescence spectrometer on/off sequence, to extend the instrument life also has an important impact, the correct operation can reduce the chances of instrument failure, X-Ray fluorescence spectrometer manufacturers remind here generally should pay attention to the following two points.
1. Power on first and then open the high voltage

2. Shutdown first off the high voltage and then shut down the power supply (5 minutes after the high voltage off and then turn off the power supply, to facilitate internal heat dissipation)

Preparation before testing XFR spectrometer

We use X-ray fluorescence spectrometer to test before about 30 minutes of warm-up in order to peak performance, do not come up to test. You also need to do a good peak correction before testing to ensure test accuracy.

XFR sample testing

Generally, companies have more than one production line, and the products to be tested have more coating structures, before testing, we should pay attention to
1. Choose the corresponding program according to the plating structure of the product to be tested
2. Cylindrical samples should be placed perpendicular to the receiver
3. Irregular L-shaped products need to consider the detector energy receiving position
4. After the test is completed, the accuracy of the data will be determined according to the matching value.

How to buy x-ray fluorescence spectrometer?

ANTITECK provide lab equipment, lab consumable, manufacturing equipment in life sciences sector.
If you are interested in our x-ray fluorescence spectrometer or have any questions, please write an e-mail to, we will reply to you as soon as possible.

    AntiTeck Life Sciences

    A1-519, XingGang GuoJi, Yingbin Road, Huadu, Guangzhou, China, 510810
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