气相色谱法和分光光度法测定苯乙烯塔釜液中DNBP含量的比较  

Comparison of gas chromatograpgy and spectrophotometry for the determination of DNBP in styrene tower kettlt liquid

作　　者：单洁[1] 王全[1] 张玉涵[1] 徐明智 SHAN Jie;WANG Quan;ZHANG Yu-han;XU Ming-zhi(Tianjin Dagu Chermical Industry CO.,Ltd.,Tianjin 300455)

机构地区：[1]天津大沽化工股份有限公司,天津300455

出　　处：《天津化工》2022年第1期54-56,共3页Tianjin Chemical Industry

摘　　要：实验室现采用分光光度法测定苯乙烯精馏塔塔釜液中DNBP的含量。目的:本文介绍了通过气相色谱测定苯乙烯精馏塔塔釜液中DNBP含量的方法。方法:实验采用对酚类物质有较好分离效果的安捷伦HP-5色谱柱。结论:与分光光度法相比,气相色谱法的准确度更高、重复性更好,且操作人员接触苯乙烯的量少、时间短,产生废液少,更符合绿色实验的要求。DNBP in tower bottoms of styrene rectifying column is determined by spectrophotometry in the laboratory. Objective: This paper introduces the determination of DNBP in tower bottoms of styrene rectifying column by gas chromatography.Method: a Agilent HP-5 column is used in the method, it has a good separation effect on phenolic substances. Conclusion: Compared with spectrophotometry, gas chromatography has higher accuracy and better reproducibility. Furthermore, operators are exposed to a smaller amount of styrene for less time.Owing to less waste is produced, gas chromatography is more environmentally friendly.

关 键 词：DNBP 苯乙烯 气相色谱法 分光光度法 

分 类 号：TQ013[化学工程]