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基于铁(Ⅲ)-硫氰酸根络合物褪色动力学反应,利用流动注射分析停流技术,建立了流动注射动力学分析法同时测定碘离子和亚硝酸根离子的新方法.方法对碘离子的线性范围为2×10~(-5)～1.6×10~(-4)mol/L.对亚硝酸根的线性范围为4×10~(-7)～1×10~(-5)mol/L.应用于合成混合液中碘离子和亚硝酸根的测定,结果满意.
Based on the kinetics of fading reaction of iron (Ⅲ) -thiocyanate complexes, a new flow injection kinetic analysis method for simultaneous determination of iodide and nitrite ions was established by using flow-injection analysis of stop-flow technique.Methods Iodine Linear range of 2 × 10 -5 to 1.6 × 10 -4 mol / L. The linear range for nitrite is 4 × 10 -7 -1 × 10 -5, mol / L. The method was applied to the determination of iodide and nitrite in the synthetic mixture with satisfactory results.