【摘要】 研究了在稀H3PO4介质中,痕量碘离子对NO-2催化溴酸钾氧化吖啶橙的阻抑作用,建立了测定痕量碘离子的阻抑动力学光度分析的新方法。测定碘离子的线性范围为0～0.40μg/mL,检出限为7.3×10-9g/mL。已用于食品中的微量碘的测定。更多还原

【Abstract】 A kinetic spetrophotometric method for determination of trace amounts of iodine was developed. The method was based on the inhibition effect of iodine on the nitrite catalyzed oxidation of acidine orange by potassium bromate catalyzed by nitrite in dilute phosphoric acid medium. The linear range of determination was 0～0.40 μg/mL with a detection limit of 7.3×10^-9 g/mL. The method was used for the determination of trace amounts of iodine in food samples with satisfactory results.更多还原