FIELD: hydrometallurgy. SUBSTANCE: complex is treated by low-acid alkali or alkali-earth metal chloride aqueous solution to decompose complex and release metal ions into solution. Metals involved are Cd, Cr, Co, Cu, Ti, Fe, Zn, Ge, As, Zr, Nb, Mo, Ru, Pd, Ag, Sn, Te, Ta, W, Os, Pt, Au, Hg, Pb, Sb, Bi. Extractants utilized are RO-PO(OH)2 and R-PO(OH)2 where R is branched alkyl with at least 12 carbon atoms. EFFECT: improved procedure. 12 cl, 6 tbl
