“…[3][4][5][6] Our scientific group first investigated the analytical properties of several azolidone derivatives and successfully used them to determine the number of ions: Cu(II), Ni(II), Cd(II), Zn(II), Hg(II), Pd(II), Pt(IV), Rh(III), Ir(IV), Ru(IV). [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] Due to the wide usage of iridium in various industries (such as jewelry, electrical equipment, dental alloys, automobile, chemical, and electronics industries, the field of photography and aviation), it is important to develop efficient analytical methods for this metal determination in various samples. 22,23 Most of spectrophotometric methods for the Iridium determination are not enough sensi-tive, selective and need heating or extraction.…”