Dimethyl ether (DME) for fuels. Determination of water content. Karl Fischer titration method

2014 ◽  
Keyword(s):  
Water Content ◽  
Dimethyl Ether ◽  
Titration Method ◽  
Karl Fischer Titration ◽  
Karl Fischer

Automatic Karl Fischer Titration of Moisture in Grain

1981 ◽  
Vol 64 (6) ◽  
pp. 1277-1283
Author(s):  
Frank E Jones ◽  
Carroll S Brickenkamp
Keyword(s):  
Standard Deviation ◽  
Moisture Content ◽  
Systematic Uncertainty ◽  
Reference Method ◽  
Titration Method ◽  
Karl Fischer Titration ◽  
Karl Fischer ◽  
Moisture Content Level ◽  
Primary Reference

Abstract Automatic Karl Fischer titrators of the motor-driven buret type and the coulometric generation type were applied to the determination of moisture in grain. Techniques were developed to optimize the performance of the Karl Fischer titration method and to overcome disadvantages attributed to it. The imprecision (1 standard deviation) of a determination is typically 0.06% moisture content at a moisture content of 15%; the systematic uncertainty from known sources is estimated to be ±0.05% moisture content at a moisture content level of 15%. It is suggested that the method be designated as the primary reference method for grain in general and for corn and soybeans in particular.

Determination of total water content in inulin using the volumetric Karl Fischer titration

Talanta ◽  
2006 ◽  
Vol 70 (5) ◽  
pp. 1006-1010 ◽  
Author(s):  
Sébastien N. Ronkart ◽  
Michel Paquot ◽  
Christian Fougnies ◽  
Claude Deroanne ◽  
Jean-Claude Van Herck ◽  
...  
Keyword(s):  
Water Content ◽  
Total Water Content ◽  
Total Water ◽  
Karl Fischer Titration ◽  
Karl Fischer

Determination of water content in bee’s pollen samples by Karl Fischer titration

Food Control ◽  
2006 ◽  
Vol 17 (3) ◽  
pp. 176-179 ◽  
Author(s):  
Iosif Gergen ◽  
Florina Radu ◽  
Despina Bordean ◽  
Heinz-Dieter Isengard
Keyword(s):  
Water Content ◽  
Karl Fischer Titration ◽  
Karl Fischer

scholarly journals Simple Modification of Karl-Fischer Titration Method for Determination of Water Content in Colored Samples

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Eva Tavčar ◽  
Erika Turk ◽  
Samo Kreft
Keyword(s):  
Water Content ◽  
Visual Detection ◽  
Moisture Determination ◽  
Spectrophotometric Detection ◽  
Karl Fischer Titration ◽  
Simple Modification ◽  
Karl Fischer ◽  
Titration Endpoint ◽  
Specialized Equipment

The most commonly used technique for water content determination is Karl-Fischer titration with electrometric detection, requiring specialized equipment. When appropriate equipment is not available, the method can be performed through visual detection of a titration endpoint, which does not enable an analysis of colored samples. Here, we developed a method with spectrophotometric detection of a titration endpoint, appropriate for moisture determination of colored samples. The reaction takes place in a sealed 4 ml cuvette. Detection is performed at 520 nm. Titration endpoint is determined from the graph of absorbance plotted against titration volume. The method has appropriate reproducibility (), accuracy, and linearity ().

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