锌还原质量法测定样品中的铑具有所需设备简单和操作方便等特点,是目前广泛采用的测定铑含量的方法,尤其适用于铑含量较高样品的分析.但是,该方法在灼烧沉淀时,金属铑会被部分氧化成氧化铑,使测定结果偏高.文中研究了锌还原质量法测定铑含量时,用离心分离铑粉代替过滤分离铑粉,并将灼烧金属铑沉淀改为烘干沉淀,操作更易控制,测定的准确度和精密度都符合要求,能够有效地避免锌还原质量法测定铑结果偏高的缺陷.
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