波谱学杂志 ›› 1995, Vol. 12 ›› Issue (3): 325-330.

• 研究论文 • 上一篇    下一篇

13C NMR与微机检索联用研究未知混合物的组成

张丽明, 钱晓刚   

  1. 上海原子核研究所分析测试研究室, 上海 201800
  • 收稿日期:1994-06-20 修回日期:1994-10-10 出版日期:1995-06-05 发布日期:2018-01-17

ANALYSIS OF UNKNOWN MIXTURE USING 13C NMR WITH MICROCOMPUTER SEARCH SADTLER DATA BASE

Zhang Liming, Qian Xiaogang   

  1. Institute of Nuclear Rasearch, The Chinese Academy of Sciences, Shanghai 201800
  • Received:1994-06-20 Revised:1994-10-10 Online:1995-06-05 Published:2018-01-17

摘要: 使用自旋回波,J调制方法(J-mod)和偏共振方式(OFR)的13C NMR谱,确定未知混合物中各种基团的碳谱归属,并且在门控去偶(NNE)状态下,选择最佳脉冲倒向角及合适的延迟时间,用碳谐定量地测定各个基团的碳数比例.实验所得谱线化学位移值与Sadtler碳谱图谱库微机检索联用,方便地判断了混合物结构及其百分含量组成.

关键词: 13C NMR, Sadtler数据库微机检索

Abstract: The structure and component of an unknown mixture need to be investigated before production.The qualitative and quantitative analysis of an unknown mixture were done normally by GC,HPLC,UV,MS,IR and chemical isolation method.In this work,13C NMR has been used in determining the structure and component of the unknown mixture with microcomputer searching sadtler data base easily.The chemical names are SUCCINIC ACID,DIMETHYL ESTER,GLUTARIC ACID,DIMETHYL ESTER,ADIPIC ACID,DIMETHYL ESTER,and their content percentages are 22.5%,62.5%,15.0% respectively.The obtained results are in agreement with those of GC-IR method.

Key words: 13C NMR, Microcomputer search sadtler data base