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WATER ACTIVITY MEASUREMENTS WITH SINGLE SUSPENDED DROPLETS - THE NACL-H2O AND KC1-H2O SYSTEMS

被引：106
作者：
TANG, IN
MUNKELWITZ, HR
WANG, N
机构：
[1] Brookhaven Natl Lab, Upton, NY, USA, Brookhaven Natl Lab, Upton, NY, USA
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1986年 / 114卷 / 02期
关键词：
SODIUM CHLORIDE - SOLUTIONS - Thermodynamic Properties - VAPORS - Measurements;
D O I：
10.1016/0021-9797(86)90426-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The levitation of a single micrometer-sized particle in a controlled water vapor environment is shown to be a novel experimental technique for measuring the thermodynamic properties of concentrated electrolyte solutions. Water activity data are obtained for the aqueous solutions of NaCl and KCl at 25 degree C over the entire concentration range up to the critical supersaturation concentration. Empirical constants are derived from a best fit of the data to the extended form of the Debye-Hueckel equation.
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页码：409 / 415
页数：7
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