抗坏血酸红外及变温红外光谱研究  

Infrared and temperature-dependent infrared spectrum study of ascorbic acid

作　　者：冯笑颜 武玉洁 周冠霖 辛畅 殷俊荣 王鹏程 肖霄[1] 于宏伟[1] Feng Xiaoyan;Wu Yujie;Zhou Guanlin;Xin Chang;Yin Junrong;Wang Pengcheng;Xiao Xiao;Yu Hongwei(Chemical Engineering School of Shijiazhuang University,Shijiazhuang 050035,China;Hebei Yipin Pharmaceutical Corporation Ltd.,Shijiazhuang 052165,China;Hebei Global Testing Technologies Limited,Shijiazhuang 050000,China)

机构地区：[1]石家庄学院化工学院,河北石家庄050035 [2]河北一品制药股份有限公司,河北石家庄052165 [3]河北泰斯汀检测技术服务有限公司,河北石家庄050000

出　　处：《煤炭与化工》2019年第8期146-150,共5页Coal and Chemical Industry

基　　金：石家庄市麻醉药技术创新中心自研项目(201902);石家庄市藁城区科学技术研究与发展计划课题(G201804)

摘　　要：采用红外光谱(IR光谱)技术开展的抗坏血酸的结构研究发现,抗坏血酸主要存在着νC=O-抗坏血酸、νC=C-抗坏血酸、νasC-O-C-抗坏血酸、βmono-OH-抗坏血酸、νsC-O-C-抗坏血酸和νring-抗坏血酸等红外吸收模式;采用变温红外光谱(TD-IR光谱)进一步开展的抗坏血酸的热稳定性研究发现,在30~120℃的短时间加热过程中,抗坏血酸的吸收频率及强度都没有明显改变。本项研究显示出IR光谱和TD-IR光谱在重要的有机化工产品(抗坏血酸)结构及热稳定性研究中的重大作用。The ascorbic acid molecular structure had been studied by infrared spectrum(IR spectrum).The infrared absorption modes of ascorbic acid were found,which areνC=O-ascorbic acid、νC=C-ascorbic acid、νasC-O-C-ascorbic acid、βmono-OH-ascorbic acid、νsC-O-C-ascorbic acid andνring-ascorbic acid.Temperature-dependent infrared spectrum(TD-IR spectrum)of ascorbic acid were studied also.With the increase of the temperature(303~393 K),the infrared absorption intensity and frequency of ascorbic acid did not changed obviously.The key roles of IR and TD-IR spectrum in the analysis of structure and thermal stability of the important organic compound(ascorbic acid)were demonstrated.

关 键 词：抗坏血酸 红外光谱 结构 

分 类 号：O434.3[机械工程—光学工程]