【摘要】 在硫酸介质中,痕量铁(Ⅲ)能灵敏地催化高碘酸钾氧化偶氮氯膦Ⅲ褪色。研究了反应的最佳条件,建立了测定痕量铁(Ⅲ)的新方法。方法检出限为9.1×10-8gFe3+/L,测定范围0-0.10μgFe3+/25mL,用于测定纯有机溶剂中的痕量铁(Ⅲ),获得了满意的结果。更多还原

【Abstract】 In H₂SO₄ medium,trace Fe（Ⅲ） can sensitively activate the indicating oxidative discolpretion of chlorphosphonozo（Ⅲ） with KIO₄.The optimum condition and kinetic parameters are investigated and evaluated,a method for determination of trace Fe（Ⅲ） is proposed.The detection limit is 9.1×10^-8 g/L,and the linear range is 0-0.10 μg/25 mL Fe（Ⅲ）.It has been applied to the determination of trace Fe（Ⅲ） in organic solvents with satisfactory results.更多还原