[Determination of Hg and As in crude antimony trioxide by microwave process system and ICP-AES].

Y Zhong, H He, Q Zhang

Index: Guang Pu Xue Yu Guang Pu Fen Xi 20(2) , 232-6, (2000)

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Abstract

An ICP-AES method was established for the simultaneous determination of Hg and As in crude antimony trioxide. The samples with different grades were digested in hydrochloric acid-tartraic acid-potassium chloride using microwave process system. The method is applied to analyze crude antimony trioxide with RSD% of 0.87%-3.2% for Hg, 1.3%-2.9% for As, and recovery of 90%-107%