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首页> 外文期刊>Biophysical Chemistry: An International Journal Devoted to the Physical Chemistry of Biological Phenomena >O-17 NMR of water in ordered environments
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O-17 NMR of water in ordered environments

机译：有序环境中水的O-17 NMR

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Two NMR experiments are designed for selective excitation of spin I = 5/2 nuclei that exhibit residual quadrupolar splittings. The I = 5/2 Jeener-Broekaert experiment is preferred to the four-quantum filtration experiment as it is shown to be a more sensitive technique in experimental practice. Both techniques are applied to O-17-enriched water in biological systems. The occurrence of water which displays a residual O-17 quadrupolar splitting is demonstrated for the first time in a model biological system and an excised tissue sample. The resulting O-17 NMR spectra are shown to have the characteristics predicted in computer-simulated I = 5/2 NMR spectra. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 14]
机译：设计了两个NMR实验，用于选择性激发自旋I = 5/2的核，这些核表现出残留的四极分裂。 I = 5/2 Jeener-Broekaert实验优于四量子过滤实验，因为它在实验实践中被证明是更敏感的技术。两种技术都适用于生物系统中富含O-17的水。在模型生物系统和切下的组织样本中首次证明了水的残留显示出O-17四极分裂。所得的O-17 NMR光谱显示具有在计算机模拟的I = 5/2 NMR光谱中预测的特征。 （C）1998 Elsevier Science B.V.保留所有权利。 [参考：14]

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