X-ray fluorescence (XRF) is a non-destructive analytical technique used to determine the elemental composition of a material. This method involves irradiating a sample with X-rays, which causes the sample to emit fluorescent X-rays at characteristic energy levels. By measuring the energy and intensity of these emitted X-rays, the elemental composition of the sample can be identified and quantified. XRF is widely used in a variety of fields such as environmental science, archaeology, geology, and materials science due to its high sensitivity, accuracy, and ease of use.