“…21 These dynamic systems led many researchers to perform simultaneous multi-element analysis in numerous matrices (Table 1). 2, The LS-GFAAS technique was applied for the simultaneous multi-element analysis in several matrices, including foods, 2,23,45,46,55,60,68,70 beverages, 25,32,39,48,51,53 biological specimen, 26,28,30,31,38,40,50,52 environmental media, 24,27,29,33,42,43,47,58,66,67 crude oil, 57,65,69 fuel 34,49,61 and medicinal plants. 62 In total, 21 elements were determined in numerous studies and Pb, Cu, Cd, As, Cr and Ni were most frequently investigated (see references in Table 1).…”