Abstract： Molybdenum ore and molybdenum concentrate were calcined by magnesium oxide. After hot water extraction, the sample was directly determined by inductively coupled plasma mass spectrometry to obtain the content of rhenium. A study was conducted on the calcination solvent & conditions, extraction conditions and instrumental determination conditions. Results indicated that: magnesium oxide was taken as calcination solvent; the sample was kept at 650 ℃ for 90 min; the optimal dissolution conditions was to use hot water for leaching; 103Rh was selected as internal element to effectively correct instrumental drift and reduce the interference of matrix effect. The detection limit was 0.005 μg/g and recoveries were between 94 % and 102 %. The method was tested by certified reference materials with the result consistent with certified value and RSD (n=5) ≤ 3.6 %. The method is suitable for the determination of rhenium with the content of 0.05~300 μg/g in molybdenum ore and molybdenum concentrate.
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