【摘要】 在室温及酸性条件下，甲醛对溴酸钾氧化乙基橙的反应具有显著的促进作用，且反应具有一定的诱导期。通过测量诱导期建立了测定甲醛的动力学分析新方法，测定甲醛的线性范围为0．10－1．5mg/L，检测限为0．05mg／L。利用此法测定了废水中的甲醛，结果满意。更多还原

【Abstract】 A simple and sensitive kinetic spectrophotometric method for the determination of trace formaldehyde based on its kinetic effect on the oxidation reaction of ethyl orangr by bromate ion in acidic medium at room temperature is reported. The linear range for formaldehye is 0. 10 ~ 1 .5 mg/L, and the detection limit is 0.05 mg/L. The method is applied to the determination of formaldehyde in waste water with satisfactory results.更多还原