DENSITIES AND REFRACTIVE-INDEXES OF AQUEOUS (LI, K, NA) NO3 MIXTURES

被引：6

作者：

ALLY, MR ^{[1
]}

KLATT, LN ^{[1
]}

ZALTASH, A ^{[1
]}

LINKOUS, RL ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1991年 / 36卷 / 02期

关键词：

Liquids--Density - Lithium Compounds - Potassium Compounds - Sodium Compounds - Solutions--Optical Properties;

D O I：

10.1021/je00002a018

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper describes experimental procedures and techniques for measuring densities and/or refractive indexes of aqueous salt solutions between 25 and 200-degrees-C and with 18.90-90.50 wt % mixed salt (LINO3, KNO3, and NaNO3). An electrolyte solution of (Li, K, Na) NO3 salts in water was chosen for study because of its recent development as a potential high-temperature heat pump fluid, but any other appropriate fluid may be accommodated for study in the apparatus. The densities and refractive indexes are shown to represent a convenient way of measuring the concentration of salt (or water), and accuracies of +/- 0.8 and +/- 0.3 wt % total mixed salt were achieved by using the above two methods, respectively. For highly concentrated salt solutions, with their attendant handling problems, this technique of concentration measurement is convincingly more convenient than the traditional methods of titration or gravimetric analysis.

引用

页码：209 / 213

页数：5