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The influence of the trunk cross section zone on the emission of VOC, chemical composition and structural parameters of fir (Abies alba Mill.)

Czajka M., Fabisiak E.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2014

No. 87

45--50

The level of volatile organic compounds emission from the heartwood zone and the sapwood zone of fir was determined. Tests were carried out by the chamber method based on the requirements of ISO 16000 standards. The samples of air from the chamber were taken after 3, 7, 14 and 28 days. The content of particular chemical components in the both parts of the trunk cross section was determined as well. It was determined that the sample of heartwood originated from the typical juvenile wood zone and the sapwood sample from the mature wood zone. The border between these zones was defined based on the changeability of the tracheid length. Throughout the whole testing period the heartwood sample emitted more volatile organic compounds compared to the sapwood sample; however, the volumes of these emissions were the lowest compared to other previously studied softwood species.

Skład chemiczny drewna jednorocznych pędów wierzby Salix viminalis i Salix purpurea z podłoży zasilonych kompostami otrzymanymi z odpadów tworzyw drzewnych

Wróblewska H., Czajka M.

Drewno : prace naukowe, doniesienia, komunikaty

2003

vol. 46, nr 170

99-115

Podczas przeprowadzonych badań określono wpływ podłoży otrzymanych z odpadów tworzyw drzewnych na właściwości uprawianych wierzb Salix viminalis L. i Salix purpurea L. Stwierdzono, że różnice występujące w składzie chemicznym badanych próbek drewna zależą od masy wyhodowanych roślin, a także od rodzaju kompostów, na których wyrosły.

Within the framework of investigation on the utilization of wastes derived from composite wood products employing the composting method, pot vegetation tests were carried out to estimate the suitability of the obtained composts for the cultivation of arborescent plants. The performed experiments employed two varieties of fast growing willow trees, namely Salix viminalis and Salix purpurea. It was found that the observed differences in the chemical composition of the examined wood samples could be associated with plant weight.