A SENSITIVE AND VERSATILE DIFFERENTIAL VAPOR PRESSURE APPARATUS

被引：11

作者：

FARM, RJ

BRUCKENST.S

机构：

[1] Department of Chemistry, University of Minnesota, Minneapolis

[2] Central Research, 3M Co., Minn., Hudson Road, St. Paul

[3] Department of Chemistry, State University of New York, Buffalo

来源：

ANALYTICAL CHEMISTRY | 1968年 / 40卷 / 11期

关键词：

D O I：

10.1021/ac60267a001

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A thermistor differential vapor pressure apparatus (vapor pressure osmometer) capable of being used over a wide temperature range is described. Solvent and solution contact only glass and platinum, and the cell is gas tight so that any desired atmosphere can be maintained in the cell. By means of a double water-jacket, the random temperature fluctuations between the solvent and solution thermistors are held to ±1 × 10−50. At relatively high solute concentrations, >0.01M in suitable solvents, an accuracy of about 0.25% is attainable. In higher vapor pressure solvents, 1% precision is obtained in solutions as dilute as lmM. © 1968, American Chemical Society. All rights reserved.

引用

页码：1651 / &