Simple Modification of Karl-Fischer Titration Method for Determination of Water Content in Colored Samples
2012 ◽
Vol 2012
◽
pp. 1-6
◽
Keyword(s):
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 ().
Keyword(s):
2008 ◽
Vol 106
(4)
◽
pp. 1454-1459
◽
2012 ◽
Vol 25
(1)
◽
pp. 350-359
Keyword(s):
2016 ◽
Keyword(s):
1979 ◽
Vol 110
(2)
◽
pp. 233-243
◽