Bazi ahşap esasli levhalarin oda ve gaz anali̇z metoduna göre formaldehi̇t emi̇syonlarinin beli̇rlenmesi̇

The purpose of this study is to determine the formaldehyde emissions of a number of wood based boards that are being produced in Turkey. The emission values for 18 mm thick particleboards, fiberboards and plyboards in raw, melamine faced, PVC faced and painted (white polyurethana lacquer) were analysed with both the chamber method (TS EN 717-1) and the gas analysis method (TS EN 717-2). In addition, the time dependent differentiation in formaldehyde emission values were investigated and the negative effects of formaldehyde emission to human health was emphasized. As a result of the study, lowest formaldehyde emissions are detected from painted plywood, particle board and fibreboard in respective order by using the chamber method. According to the gas analysis method, lowest formaldehyde emissions ar obtained from painted plywood, particle board and fibreboard repectively. In addition, Formaldehyde emissona from melamine faced particle boards and fibreboards are determined to have become constant in 16 days after tests in accordance wtih the chamber method started whereas emissions start decrease after third month and reach to lowest levels at the seventh month accordin to the gas analysis method. So, because of their low formaldehyde emissions, use of painted particle board and plywood for manufacturing furniture for internal use is important for health. Keywords: Chamber method, formaldehyde emission, gas analysis method, wood-based boards.