论文部分内容阅读
铝及铝合金快速分析方法适用于工业用铝、铸造用铝合金及变形铝合金中主要成份及杂质成份的化学分析。上述各类合金的规格要求详见附表。一、硅的测定在微酸性溶液中(pH1～2)硅酸根离子与钼酸根离子络合生成硅钼络离子,然后在草酸存在下用亚铁离子使硅钼络离子还原成为钼蓝。硅钼络离子的形成
Aluminum and aluminum alloy rapid analysis method is suitable for chemical analysis of main components and impurity components in industrial aluminum, foundry aluminum alloy and deformed aluminum alloy. The specifications of the above types of alloys see the attached table. First, the determination of silicon In a slightly acidic solution (pH1 ~ 2) silicate ions and molybdate ions complexed to generate molybdenum silicon molybdenum complex ions, and then in the presence of oxalic acid ferrous ions to molybdenum molybdenum complex ions reduced to molybdenum blue. Formation of silicon molybdenum complex ions