文档介绍：2008 年第 66 卷化学学报 Vol. 66, 2008 第 9 期, 1107 ~1110 ACTA CHIMICA SINICA No. 9, 1107 ~1110 * E-mail: yyxxqq_mail@ Received December 21, 2007; revised January 26, 2008; accepted March 17, 2008. 国家自然科学基金重点项目(No. 60531010) 和教育部博士点青年基金(No. 20070610120) 资助项目. ·研究论文· 二***亚砜- 水混合溶液的等效介电常数特异性研究杨晓庆黄卡玛* 贾国柱( 四川大学电子信息学院成都 610065) 摘要在 GHz 下利用微扰谐振腔法测量二***亚砜(DMSO) -水(H 2 O) 混合溶液的等效介电常数过程中, 发现混合溶液等效介电常数虚部大于其中任一组分的介电常数虚部的特异现象. 分析表明, 这种特异性现象的发生主要是由于 DMSO 与 H 2 O 混合后溶液的高频摩擦项大于混合前引起的. 因此, 经典混合物介电常数公式需要进行适当修正才能较好地适用于这类特异性问题计算. 关键词混合溶液; 等效介电常数; 特异性; 混合物公式; 氢键 Specific Phenomenon of Permittivity of DMSO-H 2 O Mixture Solution YANG, Xiao-Qing HUANG, Ka-Ma * JIA, Guo-Zhu (College of Electronics and Information Engineering , Sichuan University , Chengdu 610065 ) Abstract The permittivity of the dimethylsulfoxide (DMSO)-water (H 2 O) mixture solution was measured by a resonant cavity perturbation method at GHz. The measured-results show a specific phenomenon that the imaginary part of the mixture solution permittivity is larger than that of each of ponents. The theoretical calculation indicates that the reason for that phenomenon is that high frequency friction is in- creased due to the mixture of DMSO and H 2 O, which implies that the classi c mixture formula needs to be modified for calculation of the specific phenomenon. Keywords mixture s