【摘要】 酸性条件下,高锰酸钾氧化乙二醛产生强烈的化学发光信号,结合流动注射技术,建立了测定乙二醛的化学发光分析法。研究了不同因素对体系产生化学发光信号的影响;探讨了可能的化学发光机理。体系测定的线性范围为2.0×10-5~7.0×10-2g/mL,方法的检出限(3σ)为7×10-6g/mL。对浓度为1.0×10-3g/mL的乙二醛溶液进行了11次平行测定,相对标准偏差为3.8%。将本法应用于模拟样品中乙二醛的分析,结果满意。更多还原

【Abstract】 The determination of glyoxal content with flow-injection chemiluminescence system of KMnO₄-H₂SO₄ was described.It is based on the chemiluminescence emitted during the oxidation of glyoxal by Potassium Permanganate in sulphuric acid.Various factors influenced the CL system was investigated carefully. The possible mechanism of the proposed method was also studied preliminarily.The detection limit is 7×10^-6g/mL（3σ）,the linear range of determination was 2.0×10^-5～7.0×10^-2g/mL.The relative standard deviation is 3.8%(1.0×10^-3g/mL,n=11).The recommended method has been successfully used for analysis of the glyoxal in similated sample solution.更多还原