乙酰丙酮分光光度法测定内墙涂料中的甲醛含量  

Determination of Formaldehyde Content in Interior Wall Coatings by Acetylacetone Spectrophotometry

作　　者：杜陇 曹京宜[1] 李亮[1] 白守礼[2] 陈霭璠[2] 

机构地区：[1]中国人民解放军91872部队北京房山102442 [2]环境有害化学物质分析北京市重点实验室北京化工大学北京朝阳100029

出　　处：《现代科学仪器》2016年第1期99-102,共4页Modern Scientific Instruments

摘　　要：室内涂料中挥发出来的甲醛是一种有毒物质，严重危害人的身体健康。为此，建立了一种利用乙酰丙酮作为显色剂，结合分光光度法检测5种内墙涂料中甲醛含量的分析方法。方法：样品经过蒸馏预处理使甲醛得到分离，通过绘制甲醛标准工作曲线来进行定量分析。结果：甲醛在Oug“100ug范围内线性良好（线性相关系数r^2为O．9998），对5种内墙涂料样品测定得到，加标回收率达98．4％-102．2％，相对标准偏差（n=4）在0．75％-1．56％之间。结论：本方法准确可靠，操作简单且应用广泛，可满足游离甲醛含量为0-0．25gag的各种内墙涂料。The formaldehyde in the indoor paint is a kind of toxic substances, which seriously endanger human health. The aim of this study is to establish an analytical method for the determination of formaldehyde content in 5 kinds of interior wall coatings by using acetylacetone as color reagent. Methods： The sample was pretreated by distillation to make the formaldehyde separated., and the standard curve method was used for quantitative analysis. Results：Formaldehyde is linear in the range of 0μg-100 μg （12=0.9998）. The recovery rate is 98.4%-102.2% and relative standard deviation （n=4） is 0. 73%-1.36% for 5 kinds of interior wall coatings. Conclusion： This method is satisfactory due to accurate, reliable, simple and widely used, so can be used to determine the free formaldehyde content for 0-0.25 g/ kg in various interior wall coatings.

关 键 词：乙酰丙酮 分光光度法 内墙涂料 甲醛含量 

分 类 号：TQ630.7[化学工程—精细化工]