AbstractThe elemental analysis technique known as portable XRF spectrometer, or pXRF, is a rapid, affordable, non-destructive, and sustainable method to assess the elements in a variety of liquid and solid samples. Since food samples are easy to evaluate, rapid, simple, and accurate, it is desirable and promising to utilize pXRF to detect and fingerprint components in food products. We emphasized on reading the literature and making careful assessments of analytical elements such as linearity, LOD, LOQ, calibration methods, and the pXRF instrument's working mode. This accurate analysis, which upholds the status of p XRF in food elemental evaluation, offers food toxicologists enlightening opportunities and inspiration. With the aim to increase the fineness and reliability of upcoming food research, we present methods in this work for using p XRF for in real time evaluation of multiple food specimens (solid and liquid). There is also a review of popular p XRF spectrometers and a discussion of analytical calibration methods that are effective for p XRF studies in food analysis.KeywordsEnvironmental analysis, Handheld XRF, Portable XRF, Portable x-ray diffractometer, X-ray fluorescence.