Determination of Klason lignin content in lignocellulosic materials using the method of spectrophotometry
2010
Brovko, O., Russian Academy of Science, Arkhangelsk (Russian Federation). Institute of Northern Ecological Problems | Khabarov, Ju., Arkhangelsk State Technical University, Arkhangelsk (Russian Federation) | Kamakina, N., Arkhangelsk State Technical University, Arkhangelsk (Russian Federation) | Vishnyakova, A., Russian Academy of Science, Arkhangelsk (Russian Federation). Institute of Northern Ecological Problems
On the samples of lignocellulosic materials derived from laboratory and industrial alkali and kraft delignification containing up to 20% lignin Klason shown the possibility of using spectrophotometry for the quantitative determination of lignin. The method involves dissolution of lignocellulosic material in 70 % sulfuric acid followed by nitrification by concentrated nitric acid, then the resulting solution treated with alkali and carry out photometric measurements in UV spectral region.
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