动力学荧光法分析痕量碘的研究

<title>Study on kinetic fluorimetric determination of trace iodine

基于在磷酸介质中,碘能催化过碘酸钾氧化罗丹明6G的反应,使荧光猝灭,建立了催化荧光法测定痕量碘的新方法。方法的检出限为0.019mg/L,线性范围为0.020mg/L～0.80mg/L,可直接用于加碘食盐、海带、紫菜和盐酸胺碘酮药片中碘的测定。

<Abstrcat>A new catalytic fluorimetric method for determination of iodine was described. The method was based on the catalytic oxidation of rhodamine 6G by potassium periodate in dilute H3PO4. The detection limit for I- was 0.019 mg/mL. The linear range of the determination for I- was 0.020～0.80 μg/mL. The method was used to determine I- in various samples with satisfactory results.