棉秆温压成型材料挥发物分析

Qing-ding Wu, S. Xiang
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引用次数: 0

摘要

挥发性物质是室内空气污染损害生命的第一杀手。基于单因素法,采用Py-GC/MS对棉秆温压成型材料的挥发性物质进行了研究,以控制室内空气污染。因此,采用Py-GC/MS对棉秆温压成型材料热解产物的组分进行了分析。将经冷冻干燥处理的棉秆温压成型物料粉碎后,在450℃的He气氛中进行热解,热解产物通过在线链接GC/MS进行分析。采用面积归一化法测定各组分的相对含量。主要和丰富的成分是二氧化碳,乙烯,乙氧基-,1,6-无水-。- d -葡萄糖、苯酚、2-甲氧基-4-(1-丙烯基)-、雪松醇、氧化乙烯、丁醛、乙酮、1-苯基-、肟等。通过Py-GC/MS分析,从棉花秸秆热解产物中鉴定出30多种化合物。大部分热解产物可作为生物医药。但棉秆温压成型材料的挥发物中有部分是有毒的。这就意味着棉秆需要进行预处理。
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Analysis on Volatiles of Temperature-Pressure Forming Materials by Cotton Stalk
The volatiles materials is the first killer to damage the lives of indoor air pollutions. Based on the single-factor method, volatiles of temperature-pressure forming materials by cotton stalk was studied by Py-GC/MS to control indoor air pollutions. Therefore, Py-GC/MS was used to analyze the components from pyrolysis products of temperature-pressure forming materials by cotton stalk,. After treated with freeze-drying, the comminuted power of temperature-pressure forming materials by cotton stalk was pyrolyzed in He atmosphere at 450�� , then the pyrolysis product was analyzed by online linked GC/MS. Relative content of each component was determined by area normalization. The main and abundant constituents were arbon dioxide, ethene, ethoxy-, 1,6-anhydro-.beta.-D-glucopyranose, phenol, 2-methoxy-4-(1-propenyl)-, cedrol, thylene oxide, butanal, ethanone, 1-phenyl-, oxime, and so on. More than 30 compounds were identified in the pyrolysis products of Cotton stalk by the Py-GC/MS analysis. Most of the pyrolysis products could be used as biomedicine. But some of the volatiles of temperature-pressure forming materials by cotton stalk was toxic. And this meant that cotton stalk need be pretreatment.
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