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本文研究了氨水介质中,痕量铂(Ⅳ)阻抑过氧化氢氧化二甲苯蓝FF褪色的新指示反应及其动力学条件,建立了动力学光度法测定痕量铂(Ⅳ)的新方法。方法灵敏度为2.6×10~(-11)g Pt(Ⅳ)/ml,测定范围为0～1.0μg Pt(Ⅳ)/ml。
In this paper, a new indicator reaction and kinetic conditions of trace platinum (Ⅳ) inhibiting the oxidation of xylene blue FF by hydrogen peroxide in aqueous ammonia were studied. A new method for the determination of trace platinum (Ⅳ) by kinetic spectrophotometry was established . The sensitivity of the method was 2.6 × 10 ~ (-11) g Pt (Ⅳ) / ml with the range of 0 ~ 1.0μg Pt (Ⅳ) / ml.