New instrument for measurement of kiln emissions in drying of softwood timber and result analysis
In timber drying, VOC emissions have negative impacts on human health and environment and, therefore, should be controlled under certain level. In this work, a new instrument called SIFT-MS (Selected Ion Flow Tube--Mass Spectrometer) was tested and used for detection of the timber drying emissions. The results showed that the SIFT-MS is an accurate technique and its portable version, which is being developed, will be a useful measurement device. By using this instrument, compounds and levels of the emissions were measured at different drying stages for five drying schedules with drying temperature from 70 to 120°C.