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5-Br-PADAP分光光度法测定雨水中微量过氧化氢 被引量:2

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摘要 提出了一种光度法测定雨水中微量过氧化氢的方法。在0.3~1.3mol/L磷酸介质中,过氧化氢与钒(V)及2-(5-溴-2-吡啶偶氮)-5-二乙氨基苯酚(5-Br-PADAP)反应形成一种组成比为1:1:1的蓝色三元配合物,其最大吸收波长位于596nm,表观摩尔吸光系数为5.5×104L·mol(-1)·cm(-1).过氧化氢在0.07~4.1μg/10ml范围内服从比耳定律。该方法简便,具有较高的选择性和灵敏度.用于雨水中微量过氧化氢的直接测定.结果令人满意。
作者 白林山 陈庆
出处 《环境科学与技术》 CAS CSCD 北大核心 1996年第4期20-21,19,共3页 Environmental Science & Technology
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