XRF Test Principle What elements can XRF detect?

Date：2023-03-30 15:18:34 Views：5595

XRF (X-ray Fluorescence Spectrometer) is a commonly used non-destructive testing technique that can be used to quickly and accurately detect and analyze elements in various materials. XRF testing is a simple, fast, accurate, and non-destructive testing technique that can detect the presence and content of all elements in the periodic table. It has extensive application value in the fields of material science, environmental protection, food safety, etc. This article will introduce the principles of XRF testing and what elements it can detect.

Principles of XRF testing

XRF testing is based on the properties of elements: When atoms are excited by high-energy X-rays, they produce fluorescent radiation. The energy and intensity of fluorescence radiation are related to the atomic structure and composition of elements, so it can be used to determine the type and content of elements in a sample.

The specific steps for XRF testing are as follows:

Place the sample to be tested under an X-ray beam that passes through the sample and is detected by a fluorescence detector.

According to the energy level structure of different elements, the detector will detect a series of fluorescence radiation signals with specific energy.

The XRF testing software will infer which elements are contained in the sample and their content based on the energy and intensity of the fluorescent radiation signal.

What elements can XRF detect?

XRF can detect all elements in the periodic table, including light and heavy elements. In XRF testing, commonly used elements include aluminum, silicon, titanium, iron, cobalt, nickel, copper, zinc, tin, lead, silver, gold, and so on.

Because XRF testing can perform non-destructive analysis, it can be used to analyze samples of various forms, including solids, liquids, powders, and thin films. For example, in the field of material science and engineering, XRF testing is widely used in the analysis and quality control of metals, alloys, ceramics, glass, and other materials; In the field of environmental protection and food safety, XRF testing is used to detect the content of harmful elements in soil, water quality, food, etc., such as heavy metals, mercury, lead, etc. In addition to the commonly used elements mentioned above, XRF testing can also detect other elements, such as molybdenum, tungsten, zirconium, hafnium, iridium, and thallium. Different models of XRF instruments have different detection ranges and sensitivities, so appropriate instruments can be selected for testing as needed.

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