Abstract：The content of impurity elements was of great significance to guarantee the purity of high-purity tellurium dioxide products. The sample was dissolved with 1.0 mL of nitric acid-5.0 mL of hydrochloric acid-3.0 mL of tartaric acid solution. 133Cs was selected as the internal standard element. The contents of calcium, iron and selenium were determined by kinetic energy discrimination (KED) collision cell mode, and the contents of other elements were determined by the standard mode. A determination method of ten impurity elements including magnesium, aluminum, calcium, iron, nickel, copper, selenium, antimony, lead and bismuth in high-purity tellurium dioxide by inductively coupled plasma mass spectrometry (ICP-MS) was established. The limits of detection of this method were between 0.012 μg/L and 0.21 μg/L. The limits of quantification were between 0.040 μg/L and 0.59 μg/L. The high-purity tellurium dioxide samples were determined according to the experimental method. Each sample was determination for seven times in parallel. The relative standard deviations of determination results were between 1.2% and 3.4%. The recoveries were between 95% and 106%. The proposed method was applicable for the determination of tellurium dioxide materials with purity of 99.999%.
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WANG Changhua, WANG Weihua, HAN Weiru, HOU Yali, BAI Weihua. Determination of ten impurity elements in high purity tellurium dioxide by inductively coupled plasma mass spectrometry. , 2021, 41(3): 39-43.
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