Forquantitative analysis, only dest

For
quantitative analysis, only destructive methods can be used.
Wood samples must be reflux extracted and the resultant solution
analyzed by colorimetric titration using a spectrophotometer
(AWPA A2-05, AWPA 2005a) or by potentiometric
titration, or by other methods such as inductively coupled
plasma emission spectroscopy (ICPAES) or ICP mass spectroscopy
(AWPA 2000). These techniques are relatively time
consuming and can have compatibility or contamination issues
resulting from sample preparation.