【摘要】 基于α,α′-联吡啶作活化剂,铁（Ⅲ）催化过氧化氢氧化偶氮肺Ⅰ褪色的新指示反应,建立了一种高灵敏度的测定超痕量铁（Ⅲ）的新方法,其灵敏度为5.08×10^-12g/ml,测定范围0～0.10μg Fe³⁺/25Ml,相对标准偏差3.0～3.2％。更多还原

【Abstract】 A high sensitive method for determining ultratrace Fe（Ⅲ）was set up by a new indicating reaction in which hydrogen Peroxide oxidizes arsenazo I to discolour with Fe（Ⅲ）as a catalyst andα,α′-perpyridyl as an activator. The sensitivity was 5. 08×10^-6μg Fe³⁺/ml, range of determination was 0—0. 10 μg Fe³⁺/25ml and coefficient of variation 3. 0—3. 2%更多还原