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研究了铟(Ⅲ)与硫氰酸盐和结晶紫、甲基紫、乙基紫、孔雀石绿、亮绿和甲基绿等碱性三苯甲烷染料在阿拉伯树胶存在的水溶液中形成离子缔合配合物而产生的显色反应。灵敏度很高,摩尔吸光系数在2.1×10~5l·mol~(-1)·cm~(-1)至5.7×10~5l·mol~(-1)·cm~(-1)之间,其中最灵敏的是结晶紫和孔雀石绿。离子缔合物的组成是(BD)(?)[In(SCN)(?)]。可用于痕量铟的吸光光度测定。
The effects of indium (Ⅲ) and alkaline thiocyanate and crystal violet, methyl violet, ethyl violet, malachite green, bright green and methyl green dye on the presence of gum arabic in aqueous solution were studied. Colorants and the resulting color reaction. The sensitivity is high and the molar absorptivity is between 2.1 × 10 ~ 5l · mol -1 · cm -1 and 5.7 × 10 ~ 5l · mol -1 · cm -1. One of the most sensitive is crystal violet and malachite green. The composition of the ionic complex is (BD) (?) [In (SCN) (?)]. Can be used for trace indium absorption spectrophotometry.