FIELD: measurement technology. SUBSTANCE: samarium oxide Sm2O3, is injected to composition of burden, its content is kept constant and lies in range of concentrations from 1.5-2.0 per cent by mass. Detected components are injected to composition of burden in the form of oxide compounds. Effect of luminescence quenching is base of joint detection of transition elements in oxide compounds. Samarium oxide is utilized as activator and detected components are quenchers. Utilization of samarium oxide in the capacity of activator makes it possible to detect up to three transition elements of quenchers. EFFECT: opportunity for joint detection of rhenium, molybdenum and copper by luminescent method. 2 tbl
