乙酰丙酮荧光法测定空气中甲醛  

Determination of Formaldehyde in Air by Method of Acetylacetone with Fluorescence

作　　者：杜永[1] 邱海鸥[1] 邵敏[1] 卢翠丽 汤志勇[1] 

机构地区：[1]中国地质大学材料科学与化学工程学院,武汉430074 [2]湖北葛店人福药业有限责任公司,武汉430074

出　　处：《安全与环境工程》2011年第5期42-44,52,共4页Safety and Environmental Engineering

基　　金：国家自然科学基金项目(41072261)

摘　　要：本文在经典乙酰丙酮分光光度法的基础上,通过试验研究了乙酰丙酮荧光法测定空气中微量甲醛含量的方法,并考察了pH值、乙酰丙酮用量、表面活性剂与活化剂、反应温度和反应时间等对测定体系的影响,结果表明：在最佳试验条件下,甲醛的浓度在0.001-0.400μg/mL范围内与荧光信号呈良好的线性关系,相关系数达0.999 8;该方法甲醛最低检出限为5.2×10^-4μg/mL,相对标准偏差为0.09%,且简单、快速、检出限低,能满足室内外环境空气中甲醛检测的要求。Based on the classical acetylacetone spectrophotometric method,this paper studies the determination of formaldehyde in air by the method of acetylacetone with fluorescence,and detect the effects of pH,acetylacetone dosage,reaction temperature and reaction time on the measurement system.Under the optimum conditions,the concentration of formaldehyde with the linear range of 0.001-0.400 μg/mL is achieved and the correlation coefficient is 0.999 8.The detection limit of the method is 5.2 × 10^-4 μg/mL,and the relative standard deviation is 0.09%.This method has the features of being simple and fast and having low detection limit,so it can meet the requirements for the detection of formaldehyde in the air for both indoor and outdoor environments.

关 键 词：甲醛 乙酰丙酮 荧光法 

分 类 号：X831[环境科学与工程—环境工程]