Chinese Journal of Magnetic Resonance ›› 1991, Vol. 8 ›› Issue (1): 107-112.

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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 Published:1991-03-05 Online:2018-01-20

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