Matubayasi Norihiro, Namihira Junji, Yoshida Masao
Faculty of Fisheries, Nagasaki University, 1-14 Bunkyou-machi, Nagasaki 852-8521, Japan.
J Colloid Interface Sci. 2003 Nov 1;267(1):144-50. doi: 10.1016/s0021-9797(03)00547-2.
The surface tensions of aqueous solutions of four mixtures (hydrochloric acid-glycine hydrochloride, glycine hydrochloride-glycine, glycine-sodium glycinate, and sodium glycinate-sodium hydroxide) were measured as a function of total molality and mole fraction. The measurements correspond to the change in surface tension with variation of pH. The contribution of glycine hydrochloride to the increments in surface tension is equivalent to that observed for the aqueous solution of glycine, while the contribution of sodium glycinate is much larger than that of glycine. The variations in surface tension on mixing in the surface region are discussed using comparisons with mixtures of simple salts.
测量了四种混合物（盐酸 - 甘氨酸盐酸盐、甘氨酸盐酸盐 - 甘氨酸、甘氨酸 - 甘氨酸钠和甘氨酸钠 - 氢氧化钠）水溶液的表面张力随总质量摩尔浓度和摩尔分数的变化情况。这些测量结果对应于表面张力随pH值变化的情况。甘氨酸盐酸盐对表面张力增量的贡献与甘氨酸水溶液中观察到的相当，而甘氨酸钠的贡献比甘氨酸的大得多。通过与简单盐混合物的比较，讨论了表面区域混合时表面张力的变化。
