波谱学杂志 ›› 1991, Vol. 8 ›› Issue (1): 107-112.

• 研究论文 • 上一篇    下一篇

CaSO4·(1/2) H2O粉末中结晶水与吸附水1H的Goldman-Shen实验

李鲠颖, 邬学文   

  1. 华东师范大学分析测试中心 上海 200062
  • 收稿日期:1990-04-24 出版日期:1991-03-05 发布日期:2018-01-20

1H GOLDMAN-SHEN EXPERIMENT ON CRYSTALLINE AND ADSORBED WATERS IN CaSO4·(1/2) H2O POWDER

Li Gengying, Wu Xuewen   

  1. NMR Lab., Analytical Center, East China Normal University, Shanghai 200062
  • Received:1990-04-24 Online:1991-03-05 Published:2018-01-20

摘要: 本文利用Goldman-Shen脉冲序列测量了CaSO4·(1/2) H2O样品中结晶水与吸附水1H的交叉弛豫时间为55.1ms。在实验中,发现剩余窄线的磁化矢量随时间的衰减有三个过程。本文对此现象作了一些分析讨论。

关键词: 核磁共振, 固体样品, 交叉弛豫

Abstract: 1H cross relaxation time between crystalline and adsorbed waters inCaSO4 1/2 H2O powder was found to be 55.1 ms by use of the Goldman-Shen pulse sequence. In experiment, it was discovered that the narrow component ofthe 1H spectrum line decays with three time constants. The present paper gives some explanations for the experimental results.

Key words: Nuclear magnetic resonance, Solid sample, Cross relaxation