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本文用简便、准确的稀稀法求得了ＳＤＳ（十二烷基硫酸钠）－醇－正庚烷－水组成的Ｗ／Ｏ型微乳液的结构参数：水内核半径Ｒ＿ｗ、颗粒有效半径Ｒ＿ｅ、界面层厚度１、平均聚集数、颗粒总数Ｎ＿ｄ以及分散相所占总界面积Ａ＿ｄ。还求出不同水量和不同醇（正戊醇～正辛醇）时，醇从连续相（ｃ）转移到界面层（ｉ）的自由能变化发现、颗粒半径Ｒ＿ｗ与醇的碳原子数ｎ具有线性关系。同时发现Ｒ＿ｗ与含水量Ｖ＿（Ｈ２０）近似呈线性关系。
In this paper, the structural parameters of W / O microemulsion composed of SDS (sodium lauryl sulfate) -alcohol-n-heptane-water were obtained by the simple and accurate dilution method. The radius of water core R_w, the effective radius of particles R_e, Interface layer thickness 1, the average number of aggregates, the total number of particles N_d and the total area of the dispersed phase A_d. The change of free energy of alcohol transferred from continuous phase (c) to interfacial layer (i) at different water amount and different alcohols (n-amyl alcohol to n-octanol) also found that the particle radius R_w and the number of carbon atoms n of alcohol have Linear relationship. It is also found that R_w and water content V_ (H20) approximate a linear relationship.