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The matrix effect in XRF is the influence that the sample’s overall composition has on the X-ray signal from individual elements. It can cause some element signals to be absorbed or enhanced by other elements in the sample, which affects reported concentrations.
XRF accuracy is affected by sample preparation, surface condition, calibration, measurement time, matrix composition, particle size, moisture, and instrument setup. Results are most reliable when the sample is representative, the analyser is calibrated for the material type, and testing conditions are consistent.
XRF determines element concentrations by measuring the energy and intensity of fluorescent X-rays emitted from a sample after it is excited by a primary X-ray source. The energy identifies which elements are present, while the peak intensity is used to estimate how much of each element is in the sample.
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.
Near-infrared (NIR) spectroscopy can be used to identify compounds and materials by measuring how specific organic molecules absorb near-infrared light. It is rapid and non-destructive, with no sample preparation, making it suitable for on-site analysis across a wide range of applications.
Near-infrared spectroscopy uses light in the near-infrared region of the electromagnetic spectrum, typically around 350 to 2500 nm.
A portable NIR analyser shines near-infrared light onto (or through) a sample, measures how the light is absorbed or reflected, then converts that signal into an identification or estimate of composition. The result comes from comparing the measured spectrum to a calibrated model, so accuracy depends on having the right calibration for your material and conditions.
A portable NIR analyser shines near-infrared light onto (or through) a sample, measures how the light is absorbed or reflected, then converts that signal into an identification or estimate of composition. The result comes from comparing the measured spectrum to a calibrated model, so accuracy depends on having the right calibration for your material and conditions.
NIR (near infra-red) spectroscopy is an analytical technique that measures how a sample absorbs and reflects near infra-red light to generate a spectral fingerprint. That fingerprint is used to estimate material properties such as composition, identity, or quality based on how the sample’s molecules interact with the light.
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.