“…2 According to Alov,3 diverse substances can be analyzed by TXRF; therefore, it makes sense to combine them into several groups: natural (water, soil, deposits, aerosols, and plants); [4][5][6] geological and mineralogical (ore, mineral raw materials, and crystals); [7][8][9] technological (petroleum and petroleum products, metals and melts, thin films, polymers, chemicals, and wastes); [10][11] and biomedical (blood, serum, urine, and human tissue). [12][13][14][15] Furthermore, wine, 16 archaeological, [17][18] art, 19 and forensic samples 20 can also be analyzed by TXRF. Synchrotron radiation or rotating anode X-ray sources have been used for the detection of low amounts of elements by TXRF.…”