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Investigations were conducted on the chemical composition and the content of heavy metals in Salix caprea trees derived from the Zielonka Primeval Forest near Poznań. The content of cellulose, lignin and pentosans was similar to that found in literature and the quantities of heavy metals determined in individual parts of trees were similar to those found in trees growing in unpolluted areas.
The aim of this study was to determine the concentrations of volatile organic compounds found in the air in five production halls at a furniture manufacturing plant. Tests were performed in production halls, where machining operations were performed both on wood and wood-based materials, in shop halls in which surface-finishing operations were performed, as well as a finished goods warehouse.A Tenax TA synthetic sorbent was used to adsorb compounds found in the air.Volatile substances were analysed by gas chromatography combined with mass spectrometry and thermal desorption. It was found that the microclimate in the examined production halls varied. Differences were observed not only in the type of compounds detected in the shop halls, but also in their amounts. The analysed air contained a broad spectrum of volatile compounds, mainly alcohols, glycols, aromatic hydrocarbons, aldehydes, esters and terpenes. The total concentrationof volatile organic compounds (TVOC) found in the air in the examined production halls varied within a very broad range from 795 to 5113 μg/m3. The concentrations of volatile organic compounds identified in the production halls were markedly lower than those specified by Polish legal regulations - the Ordinance of the Minister of Labour and Social Policy of 2002 (with later amendments).
This paper presents the results of investigations on the emission of volatile organic compounds (VOC) from oak wood surfaces finished with acrylic waterborne lacquers. The lacquers selected for the experiments were characterised by a different content of solids, fluctuating between 32 and 38%. The volatile organic compounds were analysed using a gas chromatography technique combined with mass spectrometry and thermal desorption (GC/MS/TD). Tenax TA was employed as an adsorption medium. The obtained results indicate that volatile organic compound emissions from the experimental waterborne lacquers varied widely from 388 to 1794 μg/m3. The most important constituents of emissions included compounds that belonged mainly to glycol ethers as well as aliphatic and aromatic hydrocarbons.
The objective of this research project was to determine, using the Life Cycle Assessment (LCA) techniques, the extent and character of consequences which can occur in the entire ecosystem in the result of production of unedged oak timber and selected wood-based materials. In order to estimate the environmental consequence of selected raw materials, the authors employed the LCIA procedure (Eco-indicator '99) based on the results of work of a team of experts from the Netherlands. The applied procedure allowed determining the influence of the resultant environmental effects on various important environmental aspects.
Рассматриваются результаты исследований химического состава и yстойчивости к плеснению сырья применяемого в производстве плетеной мебели. Полученные результаты показывают, что специфические термопластические свойства ротанга связаны с высоким содержанием лингина и пентозанов. Его же высокая устойчивость к плеснению связана с выcокими количествами минеральных веществ во внешних и внутренних слоях стеблей. Небольшая устойчивость ивы к плеснению связана с нарушением биоструктуры древесины в ходе гидротермической обработки.
The paper presents results of investigations on the emission levels of volatile organic compounds from surfaces of furniture elements, both in the course of finishing processes and during ordinary utilization of finished products. Experiments were carried out on articles manufactured from particleboards finished with natural oak veneer and treated with nitrocellulose wood stain, nitrocellulose primer and acrylic finishing lacquer. Qualitative and quantitative analyses of the composition of volatile emissions were conducted with the assistance of gas chromatography combined with mass spectrometry.
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