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基于HOAc NaOAc中 ,钒 (Ⅴ )对溴酸钾氧化间 三氟甲基偶氮羧褪色有阻抑作用 ,建立了测定痕量钒 (Ⅴ )的新方法。方法的检出限为 0 .90 μg·L- 1,钒 (Ⅴ )量在 0～ 9.0 0 μg·L- 1范围内遵守比耳定律。用于水样和人发中痕量钒的测定 ,结果满意。
Based on the inhibitory effect of vanadium (Ⅴ) on the color fading of potassium permanganate during the oxidation of potassium bromate based on HOAc NaOAc, a new method was established for the determination of trace vanadium (Ⅴ). The detection limit of the method was 0.90 μg · L -1, and Beer’s law was obeyed in the range of 0-9.0 μg · L -1 for vanadium (V). For water and human hair in the determination of trace vanadium, the results are satisfactory.