Moisture Content Determination for Wood with Highly Volatile Constituents

This study found that the Karl Fischer titration method of moisture determination is superior to others tested. The study had two objectives: l) to determine correction factors for moisture-content readings with an electrical-resistance type meter for wood of two coniferous species and 2) to illustrate a method for moisture determination, the results of which, in comparison with the ovendrying test, are not affected by the presence of volatile substances other than water. The Karl Fischer method was found to be the most reliable method for water-content determination in wood. It gave standard moisture-content values against which the data obtained by the other two test procedures could be compared. The method consists of titrating an unknown amount of water with a methanol solution of sulfur dioxide, iodine, and pyridine until the brown color of free iodine appears.

You must be logged in to download any documents. Please login (login accounts are free) or learn how to Become a Member