二安替比林甲烷比色法测定二氧化钛

• 机 构: 洛阳耐火材料研究所物化室,
• 出 处: 分析化学
• 发表日期: 1976年03期
• 关键词: 二安替比林甲烷 镁质耐火材料 氧化钛 铬质耐火材料 二氧化钦 比色法 镁铬砖 熔块 参比溶液 全部溶解

采用二安替比林甲烷比色法测定镁铬质,镁质耐火材料中二氧化钛,具有以下优点:(1)灵敏度(0.02微克/毫升)较过氧化氢法高20倍。(2)干扰少,多数元素不影响测定,对镁铬质耐火材料中Cr~(6+),Fe~(3+)的影响可将其还原至低价状态即能消除。(3)可在较宽的酸度范围内(0.2—2N),适用操作比较简便。测定方法如下:

The determination of titanium dioxide in magnesia-chrome and magnesia refractories by diantipyryl methane colorimetry has the following advantages: (1) The sensitivity (0.02 μg / ml) is 20 times higher than that of hydrogen peroxide. (2) less interference, most of the elements do not affect the determination of the magnesia-chrome refractories Cr ~ (6 +), Fe ~ (3 +) can be reduced to its low-cost state that can be eliminated. (3) can be in a wide range of acidity (0.2-2N), the applicable operation is relatively simple. The determination method is as follows: