激光拉曼和傅里叶变换红外光谱仪在安乃近冷却结晶过程中的应用研究  

Quantitative Application of Raman and ATR-FTIR Spectroscopy in Cooling Crystallization Process of Analgin

作　　者：周玲[1] 张美景[1] 王召[1] 许史杰 郭明霞[1] 尹秋响[1] 

机构地区：[1]化学工程联合国家重点实验室,天津大学化工学院,天津300072

出　　处：《天津科技大学学报》2017年第3期34-38,共5页Journal of Tianjin University of Science & Technology

摘　　要：采用激光拉曼和傅里叶变换红外光谱仪对乙醇–水体系中的安乃近质量浓度进行测定.通过比较溶剂与溶液之间的谱图,找到安乃近的特征峰,并建立特征峰强度与溶液质量浓度的线性关系.对安乃近冷却结晶过程中的浓度进行离线和在线比较监测,结果表明:与激光拉曼光谱比较,傅里叶变换红外光谱信号对溶液质量浓度的变化有更好的反应,可以利用其对安乃近工业化生产实现在线监控.The concentration of analgin in ethanol-aqueous system was determined by using laser Raman and ATR-FTIR spectroscopy. Through comparing the spectrogram of the solvent and the analgin solution, the characteristic peak position of analgin was found. A linear relationship between the peak intensity and solution concentration was established. Off-line analysis and online monitoring of the concentration of analgin in the cooling crystallization process were done with Raman and ATR-FTIR spectroscopy. From the results, it was found that the signal of ATR-FTIR has a better response than Raman spectroscopy in the cooling crystallization process of analgin, so ATR-FTIR spectroscopy could be used for in situ monitor- ing of industrial production.

关 键 词：激光拉曼光谱 傅里叶红外光谱 安乃近 结晶 在线监测 

分 类 号：O657.3[理学—分析化学]