Abstract：The accurate and rapid determination of 19 trace impurity elements in photoluminescent calcium molybdate, including tungsten, vanadium, copper, manganese, nickel, iron, silicon, tin, antimony, magnesium, cadmium, aluminum, lead, bismuth, chromium, arsenic, titanium, cobalt and barium, is of great significance for the quality determination of photoluminescent calcium molybdate. Hydrogen peroxide-hydrochloric acid system was selected for the pretreatment of samples. The influence of matrix effect on the determination was eliminated by the molybdenum matrix matching method. Appropriate analytical lines were selected to eliminate the spectral interference. The contents of 19 trace impurity elements in photoluminescent calcium molybdate were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). The correlation coefficients of calibration curves of testing elements were all greater than 0.999 0. The limits of detection of testing elements were in range of 0.2-4.4 μg/g.The contents of tungsten, vanadium, copper, manganese, nickel, iron, silicon, tin, antimony, magnesium, cadmium, aluminum, lead, bismuth, chromium, arsenic, titanium, cobalt and barium in photoluminescent calcium molybdate were determined according to the experimental method. The relative standard deviations (RSD, n=8) of determination results were between 0.61% and 6.8%. The spiked recoveries were between 95% and 105%. The internal control samples in laboratory were determined according to the experimental method, and the found results were consistent with those obtained by inductively coupled plasma mass spectrometry (ICP-MS).
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