阻抑动力学光度法测定痕量苯酚

Detemination of Trace Phenol by Inhibition Kinetic Spectrophotometry

基于硫酸介质中,痕量苯酚对溴酸钾氧化溴甲酚绿的褪色反应具有显著的抑制作用,研究了该阻抑褪色反应的最佳条件,据此建立了测定痕量苯酚的阻抑动力学光度分析新方法.该方法的线性范围为0.01～5.0μg/ml,检出限为0.01415μg/ml,该方法简便、灵敏,用于废水中痕量苯酚的测定,结果令人满意.

A new method for the determination of trace phenol has been developed. The method is based on the inhibitory effect of phenol on the oxidation reaction of bromocresol green by potassium bromate in H2SO4 medium. The optimum condition of the mentioned reaction is investigated in detailed in the paper. The linear range is 0.1 - 50.0μg/10ml with the detection limit of 0.01415 μg/ml. The detection method is simple and sensitive, and when applied to the detection of waste water the result is also satisfying.