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维生素B12的激光共振拉曼光谱研究
引用本文:赵晓杰,甘师盘.维生素B12的激光共振拉曼光谱研究[J].光谱学与光谱分析,1994,14(1):29-32.
作者姓名:赵晓杰  甘师盘
作者单位:华中理工大学激光技术国家实验室,中南民族学院物理系
摘    要:本文用激光共振拉曼光谱研究了维生素B12位于270-780cm^-1的低频振动光谱。认为344,476和488cm^-1拉曼峰分别是腺嘌呤,Co-CN和Co-CH3振动模。用实验证明了维生素B12在514.5nm激光作用下发生部分光解,而且Co-CH3比Co-CN更容易断裂。测得了光照B12后光解速曲线。

关 键 词:维生素B12  光解  激光共振  喇曼光谱

THE STUDIES OF VITAMIN B_(12) BY RESONANCE RAMAN SPECTROSCOPY
ZHAO Xiaojie, JIANG Shan, FAN Yongchang, AN Chengwu, LU Dongsheng, LI Zaiguang.THE STUDIES OF VITAMIN B_(12) BY RESONANCE RAMAN SPECTROSCOPY[J].Spectroscopy and Spectral Analysis,1994,14(1):29-32.
Authors:ZHAO Xiaojie  JIANG Shan  FAN Yongchang  AN Chengwu  LU Dongsheng  LI Zaiguang
Abstract:Low frequency Raman vibration modes between 270 and 780 cm-1 of vitamin B12were studied by resonance Raman spectroscopy carefully. The Raman bands at 344, 476 and 488cm-1 were assigned to the vibration of adenine, Co-CN and Co-CH3, respectively. The experimental results indicated that vitamin B12 would be photodecomposed when it was irradiated by 514. 5nm laser and the Co-CH3 bond is broken easier than Co-CN bond. The velocity of vitamin B12 photodecomposition was measured.
Keywords:Vitamin B12  Resonance Raman spectroscopy  Photodecomposition  
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