Questions

XRF detectors work by measuring the fluorescent X-rays emitted from a sample after it has been excited by the analyser’s X-ray source. The detector records the energy and intensity of these X-rays, allowing the instrument to identify elements and estimate their concentrations.

Fluorescence in XRF analysis is the emission of secondary X-rays from a sample after it has been excited by a primary X-ray source. These emitted X-rays are characteristic of the elements present, allowing an XRF analyser to identify and measure elemental composition.

XRF can analyse some liquids, but it usually requires suitable sample containment, correct calibration and careful control of the measurement setup. Handheld XRF is more commonly used for solids, powders and prepared samples, while liquid analysis may need specialist accessories or laboratory methods depending on the elements, concentrations and accuracy required.

XRF is used for field analysis because it provides fast, non-destructive elemental results directly at the point of need. It helps operators screen, verify, sort or assess materials on site without waiting for laboratory turnaround, provided the sample and measurement conditions are suitable.

XRF is a surface-sensitive technique, and the effective penetration depth depends on the element being measured, the sample material and the energy of the X-rays involved. In many practical applications, XRF measures from the surface to a depth ranging from microns to millimetres, rather than analysing the full bulk of a thick sample.

Handheld XRF analysers can provide fast, accurate elemental analysis in the field when the sample, calibration method and measurement conditions are suitable. They are best used for rapid screening, alloy identification, mineral assessment and on-site decision support, while laboratory methods may still be required where formal certification, very low detection limits or complex sample matrices are involved.

XRF cannot detect very light elements, specifically those with an atomic number lower than magnesium, like lithium, beryllium, carbon, or hydrogen. It also struggles with materials that aren’t the same all the way through or samples where the surface doesn’t match the inside. Because it only identifies elements, it cannot tell you how those elements are chemically bonded together.

XRF can detect most elements on the periodic table, generally starting from magnesium (atomic number 12) through to uranium (atomic number 92). It is particularly good at identifying metals like gold, silver, iron, and copper. It can also find heavy metals and environmental contaminants like lead or arsenic in very small amounts.

An XRF analyser measures the individual elements that make up a material. It tells you both what is in the sample (qualitative) and exactly how much of it is there (quantitative). It is most commonly used to check the chemistry of metals, soil, rocks, and various manufactured goods.

A handheld XRF analyser works by firing X-rays into a sample, which causes the atoms inside to release their own energy. The device has a built-in detector that catches this energy to identify the elements and calculate their concentrations. This gives you a full chemical breakdown on a screen in just a few seconds while you are out in the field.

X-ray fluorescence (XRF) is a non-destructive way to figure out what elements are inside a material. By hitting a sample with X-rays, the device measures the “glow” or fluorescent X-rays coming back to identify exactly what is there and in what amount.