• 论文与研究报告 •

### 人造板VOCs快速检测法与气候箱法的对比

1. 东北林业大学材料科学与工程学院 哈尔滨 150040
• 收稿日期:2014-04-30 修回日期:2014-07-01 发布日期:2015-04-10
• 基金资助:
国家自然科学基金项目(31270596); 国家林业局引进国际先进林业科学技术项目(2013-4-06)。

### Comparison of the Rapid Testing Method for VOCs-Emissions from Wood-Based Panels with the Chamber Method

Du Chao, Shen Jun

1. College of Material Science and Technology, Northeast Forestry University Harbin 150040
• Received:2014-04-30 Revised:2014-07-01 Published:2015-04-10

Abstract: 【Objective】To realize the rapid testing of volatile organic compounds (VOCs) emitted from wood-based panels, we investigated the rapid testing method with high efficiency and low investment to detect VOCs emission from wood-based panels.【Method】Rapid testing equipment was used to test VOCs emission from high density fiberboard, medium density fiberboard and particle board. Gas chromatography-mass spectrometer (GC-MS) was used to measure the components and concentrations of the VOCs. To investigate the rapid testing mechanism of the VOCs emission, the VOCs emission rate and components were studied. The correlation of the tested data of rapid testing method and the emission test chamber method was also compared.【Result】 The results show that the total volatile organic compounds (TVOC) of the three kinds of wood-based panels tested by rapid testing method showed a downward trend and the descending slope is high at the first three days. Then, the slope became slow until reached equilibrium state. The three kinds of wood-based panels reached equilibrium state within 13 days. The initial VOCs emission rates of the three kinds of wood-based panels tested by rapid testing method arranged in descending order was: high density fiberboard, medium density fiberboard and particle board. Their initial emission rates were 344, 267 and 212 μg·m-2h-1, respectively. The VOCs emission components detected by the two methods were arene, alkene, alkane, aldehyde, ketone, ester, alcohol and other material. The main components were arene, alkene, alkane and aldehyde. The arene and alkene emission content proportions of TVOC content of the three kinds of wood-based panels were over 50%. The differences among emission rates of different VOCs were high in initial stage and the differences were low when reached equilibrium state. VOCs emission rates tested by rapid testing method were higher than that tested by chamber method. TVOC initial rate of high density fiberboard, medium density fiberboard, and particle board tested by rapid testing method was 2.06, 2.04 and 1.79 times of that tested by chamber method, respectively. Moreover, the amount of all kinds of VOCs emission improved to varying degrees. The equilibrium tested by the two methods was linear fitted. The resulting linear equation was y=1.171x-3.1252 and the fitting degree was 0.985. 【Conclusion】The detection efficiency of rapid testing method was 1.15 times of the chamber method. The equilibrium value of VOCs emission obtained by the two methods showed very good correlation, confirming that the rapid testing method was reliable.