ChemInform Abstract: THERMODYNAMICS OF ALUMINUM OXIDE-SODIUM OXIDE-WATER SYSTEM. PART 3. DETERMINATION OF THERMODYNAMIC PROPERTIES OF BOEHMITE FROM ITS SOLUBILITY DATA IN SODIUM HYDROXIDE SOLUTIONS

1981 ◽  
Vol 12 (52) ◽  
Author(s):  
B.-T. CHANG
Keyword(s):  
Thermodynamic Properties ◽  
Aluminum Oxide ◽  
Sodium Hydroxide ◽  
Water System ◽  
Sodium Oxide ◽  
Solubility Data ◽  
System Part

scholarly journals Determination of the Thermodynamic Properties Controlling the Distribution Ratio of Sb between Sodium Oxide-Base Slag and Molten Copper

1989 ◽  
Vol 53 (4) ◽  
pp. 407-414 ◽  
Author(s):  
Chikabumi Yamauchi ◽  
Toshiharu Fujisawa ◽  
Shigeaki Goto ◽  
Hiroyuki Fukuyama ◽  
Kazuya Matsuda
Keyword(s):  
Thermodynamic Properties ◽  
Distribution Ratio ◽  
Molten Copper ◽  
Sodium Oxide

Models of Thermodynamic Properties of Prominences

1979 ◽  
Vol 44 ◽  
pp. 349-355
Author(s):  
R.W. Milkey
Keyword(s):  
Thermodynamic Properties ◽  
Mass Transport ◽  
Emission Spectrum ◽  
Thermodynamic Parameters ◽  
Working Group ◽  
Physical Processes ◽  
Theoretical Concepts ◽  
Group 3 ◽  
Observational Techniques

The focus of discussion in Working Group 3 was on the Thermodynamic Properties as determined spectroscopically, including the observational techniques and the theoretical modeling of physical processes responsible for the emission spectrum. Recent advances in observational techniques and theoretical concepts make this discussion particularly timely. It is wise to remember that the determination of thermodynamic parameters is not an end in itself and that these are interesting chiefly for what they can tell us about the energetics and mass transport in prominences.

Determination of subnanogram amounts of sulfur dioxide and sulfites by pneumatopotentiometry

1986 ◽  
Vol 51 (10) ◽  
pp. 2077-2082 ◽  
Author(s):  
Jan Langmaier ◽  
František Opekar
Keyword(s):  
Sulfur Dioxide ◽  
Redox Potential ◽  
Sodium Hydroxide ◽  
Porous Membrane ◽  
Membrane Electrode ◽  
Iodine Monochloride ◽  
Membrane Pores ◽  
Relative Standard ◽  
Limit Of Quantitation

Gold porous membrane electrode has been used for the potentiometric determination of small amounts of sulfur dioxide absorbed in the solutions of sodium tetrachloromercurate or sodium hydroxide. Sulfur dioxide is released by the reaction with an acid into a stream of nitrogen and led to the electrode immersed into the solution of iodine monochloride. Part of SO2 penetrates through the membrane pores into the solution where it is oxidized. The electrode redox potential change is a measure of the SO2 concentration in the absorption solution. In the solution of 1 . 10-5 M[ICl2]- in 0.02 M-HClO4 the limit of quantitation was found to be 0.07 ng SO2 . ml-1. The relative standard deviations of 1.4% and 2.5% were found for the determinations of 10 ng and 0.5 ng of SO2, respectively. Higher concentrations of H2S interfere only in the hydroxide solution. About 10 samples can be analyzed per one hour.

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