溴甲酚绿动力学光度法测定甲醛

Kinetic Spectrophotometric Determination of Formaldehyde by Catalytic Oxidation of Bromocresol Green with Potassium Bromate

在磷酸介质中 ,甲醛对溴酸钾氧化溴甲酚绿有催化作用 ,建立了测定微量甲醛的催化动力学光度法。在适宜实验条件下 ,方法的线性范围为 1— 15 mg/L;检出限为 0 .4 1mg/L。用于检测废水中甲醛含量 ,结果满意。

A kinetic spectrophotometric method for the determination of formaldehyde was developed,based on the catalytic effect of formaldehyde on the oxidation reaction of bromocresol green by potassium bromate in H 3PO 4 medium.The linear concentration range is 1—15mg/L with a detection limit of 0.41mg/L. The method was applied to the determination of formaldehyde in waste waters with satisfactory results.