Identification of the sources of organic compounds that decalcify cement concrete and generate alcohols and ammonia gases
Identification of the sources of organic compounds that decalcify cement concrete and generate alcohols and ammonia gases
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DOI：
10.1016/j.buildenv.2008.12.011
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发表时间：
2009-09-01
影响因子：
7.4
通讯作者：
Kamijima, Michihiro
中科院分区：
文献类型：
--
作者：
Tomoto, Takashi;Moriyoshi, Akihiro;Kamijima, Michihiro
这项研究确定了各种类型的空气有机化合物的排放源，这些有机化合物通过与湿气一起渗透到混凝土中而使水泥混凝土变质。该研究采用高效液相色谱和气相色谱质谱联用技术。结果表明，脱钙水泥混凝土中有机化合物的种类与空气中总悬浮化合物的种类非常相似，排放源是夏季使用的柴油车和子午线轮胎的尾气颗粒。此类有机化合物包括怀疑具有内分泌干扰特性的物质。当这些物质渗透到高碱性水泥混凝土中时，会发生水解，导致水泥混凝土变质，释放出醇类和氨气，污染室内空气，并可能导致病态建筑综合症。 (C) 2008 Elsevier Ltd. 保留所有权利。
This study identifies the emission sources of various types of airborne organic compounds, which deteriorate cement concrete by penetrating into the concrete together with moisture. The study used high-performance liquid chromatography and gas chromatograph mass spectrometry. The results show that the types of organic compounds contained in decalcified cement concrete were very similar to those found in the total suspended compounds in the air, and that the source of the emissions was particles of exhaust from diesel vehicles and radial tires used in summer. Such organic compounds include substances suspected of having endocrine disrupting properties. Hydrolysis occurs when these substances penetrate into highly alkaline cement concrete, and leads to deterioration of the cement concrete and the release of alcohols and ammonia gases which pollute indoor air and may be a cause of the sick building syndrome. (C) 2008 Elsevier Ltd. All rights reserved.