摘要
建立了用分光光度法测定三聚氰胺甲醛树脂中游离甲醛含量的方法。以乙酰丙酮-乙酸-乙酸铵溶液为显色剂,进行显色测定。实验结果表明,该方法在甲醛的浓度为5.2×10^（-6）g/m L^32.9×10^（-5）g/m L间与吸光度成良好的线性关系（R^2〉0.9999）,测定的相对偏差在5%以内。实验表明该法准确、快捷、操作简便,应用于三聚氰胺甲醛树脂中游离甲醛含量的测定,取得了很好的结果。
A visible spectrophotometry method was established for the determination of free formaldehyde concent of melamine co-polycondensation resin. The result indicated that the method has good linearity,simple operation as well as its quickness,and its recovery and precision can meet the demand for microanalysis.
出处
《合成材料老化与应用》
2016年第4期70-73,共4页
Synthetic Materials Aging and Application
关键词
游离甲醛
分光光度法
三聚氰胺甲醛树脂
free formaldehyde
spectrophotometry
melamine co-polycondensation resin
