| NMR STUDIES ON THE HYDRATION OF IONS IN MICROEMULSION——THE NAPHTHENIC ACID SOAP-ALCOHOL-KEROSINE-WATER MICROEMULSION SYSTEM |
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| 引用本文： | 吴瑾光,黎乐民,高宏成,陈滇,金天柱,徐光宪,孙贤育,张水珍,伍华菊,王昌瑾.NMR STUDIES ON THE HYDRATION OF IONS IN MICROEMULSION——THE NAPHTHENIC ACID SOAP-ALCOHOL-KEROSINE-WATER MICROEMULSION SYSTEM[J].中国科学B辑(英文版),1982(11). |
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| 作者姓名： | 吴瑾光 黎乐民 高宏成 陈滇 金天柱 徐光宪 孙贤育 张水珍 伍华菊 王昌瑾 |
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| 作者单位： | Department of Chemistry，Peking University)，Department of Chemistry，Peking University)，Department of Chemistry，Peking University)，Department of Chemistry，Peking University)，Department of Chemistry，Peking University)，Department of Chemistry，Peking University)，Institute of Photographic Chemistry，Academia Sinica，Beijing，Institute of Photographic Chemistry，Academia Sinica，Beijing，Institute of Photographic Chemistry，Academia Sinica，Beijing，Institute of Photographic Chemistry，Academia Sinica，Beijing |
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| 摘 要： | The difference △δ between the proton shift of water of hydrauon of metar ions δ(H_2O(M~4))and that of pure liquid water δ_(H_2O(1)) so far observed is very small, only about ± 0.1 ppm,because the ratio of metal ions to H_2O molecules M~ /H_2O cannot exceed 0.36 even in veryconcentrated aqueous solutions. In the present investigation, we study the hydration of metalions in microemulsions and propose a novel method to vary M~ /H_2O ratio from 100:1 to1:100. Under such conditions, we have obtained the limits of δ(H_2O(M~ )) for various cations asfollows: 7.54 ppm (NH_4~ ), 7.08(Li~ ), 6.22(Na~ ), 6.00(K~ ), while δ(H_2O(1)) = 4.80 ppm, sothat the largest △δ observed amounts to 2.74 ppm, thus rendering NMR method an effectivemeans to study the hydration of metal ions.
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