Volumetric determination of columbium.

DETERMINATION OF COLUMBIUM IN ORES BY X-RAY FLUORESCENCE1 JouN S. SrevrNsoN, McGill Uniaersity, Montreal, Quebec. AssrRecr

Analyses for columbium in pyrochlore ores from North Bay, Ontario, have been made successfully by using o-ray fluorescence techniques. rt was necessary to use, as in methods of optical spectroscopy) an internal standard for this work. The choice of a suitable internal standard for a particular metal in a specific mineral association or ore-t).pe requires consideration of the characteristic r-ra...

Determination of Thermo-physical Properties of Non-Newtonian Fluids Using a Coaxial Cylindrical Cell

In this study the thermal conductivity and the volumetric heat capacity of non-Newtonian fluids are investigated. These fluids find many applications in chemical, medical and food industries. They mostly have viscoelastic behavior and generally differ from Newtonian fluids. Two non-Newtonian fluids, solutions of xanthan and carboxy methyl cellulose in water with various concentrations have bee...

Determination of Volumetric Mass Transfer Coefficient in Gas-Solid-Liquid Stirred Vessels Handling High Solids Concentrations: Experiment and Modeling

Rigorous analysis of the determinants of volumetric mass transfer coefficient (kLa) and its accurate forecasting are of vital importance for effectively designing and operating stirred reactors. Majority of the available literature is limited to systems with low solids concentration, while there has always been a need to investigate the gas-liquid hydrodynamics in tanks handling ...

EDWARDS : Volumetric Determination Of Carbon

Volumetric determination of calcium in blood serum.