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研究了二溴对甲偶氮羧与锶（Ⅱ）的显色反应，考察了反应条件和分析特性。在Ｈ_３ＢＯ_３-Ｎａ_２Ｂ_４Ｏ_７缓冲溶液中，试剂与 Ｓｒ~(２＋)形成２：１的络合物，在 ６２０ｎｍ处的摩尔吸光系数 ε＝１．８９×１０~４。 Ｓｒ~(２＋)量在 ０．２５—１．２５μｇ／ｍＬ范围内，服从比尔定律。设计了测定铁氧体样品中锶的新方法，结果满意。
The color reaction of dibromo-p-carbazo with strontium (Ⅱ) was studied. The reaction conditions and analytical properties were investigated. In H_3BO_3-Na_2B_4O_7 buffer solution, the reagent formed a 2: 1 complex with Sr 2+, and the molar absorptivity ε = 1.89 × 10 -4 at 620 nm. The content of Sr 2+ is in the range of 0.25-1.25 μg / mL, subject to Beer’s law. A new method for the determination of strontium in ferrite samples was designed and the results were satisfactory.