【摘要】 研究了在弱酸介质中,利用铁（Ⅲ）对高碘酸钾氧化溴酚蓝的催化作用,建立了催化光度方法测定痕量铁（Ⅲ）的新方法,该方法线性范围在0⁴8μg/L、检测限为 3.1× 10^-7·L^-1。测定出反应表观活化能为 Ea=98.66KJ/mol。此法用于水样中微量铁的测定,结果满意。更多还原

【Abstract】 A kinetic spectrophotometric method for determination of trace iron （Ⅲ） was established.It was based on the Fe （Ⅲ） catalyzed discoloring reaction of Bromophenol blue by potassium periodatein the presence of Hac-NaAc solution （PH=3.6）. The sensitivity of method is 3.1 ×10^-7g/L. Therang of determination is 0-48μg/L The apparent activation of catalytic reaction is 98. 66KJ. mol-1.The method has been applied to the determination of iron in water samples with satisfactory results.更多还原