The 242.795 nm on ICP-AES for the gold analysis was the most sensitive wavelength which wasalso interfered severely by the spectra of other metal ions such as manganese, chromium, cobalt, and iron.for separation of gold in ore solution was 10 % n-hexane contained MIBK mixed solvent. The gold recoverywas 97.5 % from mixed metal solution contained about 2 M HNO3 and 0.5 M HCl.