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林业科学 ›› 2015, Vol. 51 ›› Issue (3): 109-115.doi: 10.11707/j.1001-7488.20150314

• 论文与研究报告 • 上一篇    下一篇

人造板VOCs快速检测法与气候箱法的对比

杜超, 沈隽   

  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

摘要: 【目的】 为实现对人造板挥发性有机化合物(VOCs)的快速检测,探索一种高效、低投入的人造板VOCs释放快速检测法。【方法】 以高密度纤维板、中密度纤维板以及刨花板为研究对象,利用热萃取仪采样,气相质谱色谱联仪(GC-MS)检测板材释放VOCs的浓度及成分,从VOCs释放水平及成分2方面探索人造板VOCs高温高湿快速释放机制,对比分析快速检测法与气候箱法采集检测结果之间的相关性和可靠性。【结果】 快速检测法测得的3种板材的TVOC释放速率整体呈下降趋势,均是前3天下降趋势较大,之后下降趋势逐渐减缓直至13天内达到平衡状态; VOCs初始释放速率从高到低为高密度纤维板(344 μg·m-2h-1 )、中密度纤维板(267 μg·m-2h-1 )和刨花板(212 μg·m-2h-1); 使用2种检测法测得的3种板材VOCs释放物均为芳香烃、烯烃、烷烃、醛类、酮类、酯类、醇类及其他类8类,且主要物质相同,均为芳香烃、烯烃、烷烃和醛类,3种板材芳香烃和烯烃初始释放量均占TVOC初始释放量的50%以上; 板材VOCs释放初期,各类化合物速率相差最大,最终VOCs释放达到平衡时,各化合物的释放速率相差较小; 快速检测法测得的板材VOCs释放量均高于气候箱法,使用快速检测法测得的3种板材的TVOC初始释放速率分别为使用气候箱法测得的TVOC初始速率的2.06,2.04以及1.79倍,且使用快速检测法使得板材的各类化合物释放量提高程度均不同; 将2种方法检测3种板材VOCs释放的平衡值进行拟合得到直线y=1.171x-3.125 2,拟合度R2=0.985。【结论】 在本试验设置的条件下,快速检测法的检测效率相对于气候箱法提高了1.15倍,同时,快速检测法所得到的平衡值与气候箱法检测结果之间有很好的相关性,检测结果可靠。

关键词: 快速检测法, 气候箱法, 人造板, 挥发性有机化合物(VOCs), 对比

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.

Key words: rapid testing method, chamber method, wood-based panels, volatile organic compounds (VOCs), comparison

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