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在10～13%盐酸介质中以亚硫酸-抗坏血酸将亚碲酸还原成元素碲状态析出,分取上层清液分别测定铝、铋、铅、铁。
In 10 ~ 13% hydrochloric acid medium, sulfite-ascorbic acid is used to reduce tellurite to elemental tellurium, and the supernatant is separated to determine aluminum, bismuth, lead and iron respectively.