NMR Measurement of Liquid Water Cluster Li Fuzhi, Zhang Xihui, L u Mujian a, Zhang Xiaojian b, Wang Zhansheng b (Research Center for Environmental Engineering and Management, Graduate School at shenzhen, Tsinghua University, Shenzhen 518057; a Analysis Center of Chemistry College, Peking University, Beijing 100871; b Department of Environmental Science and Technology, Tsinghua University, Beijing 100084) Abstract Research on liquid water cluster structure has been an important field of water treatment since it may have great health benefits to human being. In this research the principle of measuring liquid water relative cluster size by NMR was expatiated. Through a series of experiments the undecoupled 17O-NMR FWHM was selected to scale the average cluster size in liquid water. The method was used to study the effect of ion contents on the liquid water cluster and the results had great importance on the study of health benefits of liquid water. Key words NMR, FWHM(Full-Width Half-Maximum), Water cluster, Health 液态水团簇结构的核磁共振分析 李福志 张锡辉 吕木坚 a 张晓健 b 王占生 b (清华大学深圳研究生院环境工程和管理研究中心 深圳 518057) (a北京大学化学学院分析中心 北京 100871 b清华大学环境科学与工程系 北京 100084) 摘要 由于水的团簇结构可能对人体健康具有重要的影响，因此，关于水的团簇结构的研究已经成为水处理领域中一个前沿的研究课题。本文阐述了利用核磁共振半高宽表征液态水团簇结构平均相对大小的原理，通过试验确定了以 17O 核非去耦谱的核磁共振半高宽作为衡量液态水团簇结构平均相对大小的指标。利用 17O NMR 半高宽研究了离子浓度对液态水团簇结构的影响，所得到的结果对于指导饮水的团簇结构与人体健康关系的研究具有重要的意义。 关键词 核磁共振 半高宽 水团簇 健康 李福志 男，31 岁，博士，从事水的团簇结构及其控制机理研究。 国家自然科学基金资助项目(50078026) 2003-01-14收稿，2004-03-26接受 (PDF全文下载c04109)