吡啶(Ⅰ)用于维生素A的生产。目前控制污水中它的含量,用Ⅰ与溴化氰和苯胺反应的方法生成呈色的衍生物戊烯二醛,用戊醇萃取并进行光度测定。这种方法的缺点是使用的试剂毒性高。生产有机硅产品的污水中测定I,有在紫外区256 nm,于0.1 M盐酸溶液中进行测定的方法。本文研究了用气液色谱法测定污水中I的浓度。实验部分 Pyridine (I) is used in vitamin A production. At present, it controls the content of sewage, and uses the method of reacting Ⅰ with cyanogen bromide and aniline to generate glutaraldehyde, a colored derivative, which is extracted with amyl alcohol and measured photometrically. The disadvantage of this method is the high toxicity of the reagents used. Determination of the production of silicone products in the sewage I, with UV in 256 nm, 0.1 M hydrochloric acid solution was measured in the method. This paper studies the determination of the concentration of I in sewage by gas liquid chromatography. Experimental part