甲醛、乙醛、丙烯醛衍生物的特性研究

Study on the Characteristics of Derivatives of Formaldehyde, Acetaldehyde and Acrolein

合成了环境重要污染物甲醛、乙醛和丙烯醛的衍生物-2,4-二硝基苯腙,应用熔点法、元素分析和核磁共振技术鉴定了3种苯腙的结构与纯度,应用毛细管气相色谱法研究了3种衍生物的某些色谱性质。结果表明:这3种希夫碱可以作为标准品来测定环境空气中微量低分子醛类蒸气。

The derivatives of formaldehyde, acetaldehyde and acrolein 2,4-dinitrophenyl hyrazone have been synthetized.Their structure and pureness were determined by fusion point, elements analysis and NMR. The chromato-graphic characteristics of the three derivations in tetrachloromethane solution have also been studied. The result showed that their derivatives could probably be used as the standards for measurement of trace formaldehyde, acetaldehyde and acrolein in air.