Institute of Environmental and Sustainable Chemistry, Technische Universitaet Braunschweig, Hagenring 30, Braunschweig, Germany.
Chemosphere. 2012 Jul;88(5):650-4. doi: 10.1016/j.chemosphere.2012.03.051. Epub 2012 Apr 9.
Typical burnt smell often results from fire accidents or in general from incomplete combustion. Recently, eleven compounds were identified, which are basically responsible for this odour. When analyzing residual materials from different fire accidents, the pattern that means the relative ratios of these compounds among each other varies strongly, although always causing a burnt smelling. Consequently, lab-scale combustion experiments were performed in order to investigate the influence of defined materials from domestic environment on the burnt-smell fingerprints. Furthermore, the occurrence of other polar and higher molecular combustion products was studied. It was found that under good combustion conditions, the burnt smell patterns resulting from the single materials were astonishingly consistent, mostly dominated by methylphenols or naphthalene. No correlation could be found between these 'fingerprints' and combustion product groups identified by GC/MS-screenings. LC/MS/MS-measurements especially pointed at the existence of higher molecular weight phenolic and acidic functionalized compounds in the combustion residues.
通常，烧焦味是由火灾事故或一般的不完全燃烧引起的。最近，已经鉴定出 11 种化合物，它们基本上是这种气味的来源。在分析不同火灾事故的残余物时，尽管总是会产生烧焦味，但这意味着这些化合物彼此之间相对比例的模式变化很大。因此，进行了实验室规模的燃烧实验，以研究来自家庭环境的特定物质对烧焦味特征的影响。此外，还研究了其他极性和高分子燃烧产物的发生。结果发现，在良好的燃烧条件下，来自单一物质的烧焦味模式惊人地一致，主要由甲基苯酚或萘主导。这些“指纹”与 GC/MS 筛选鉴定的燃烧产物组之间没有相关性。LC/MS/MS 测量尤其指出，在燃烧残留物中存在高分子量的酚类和酸性官能化化合物。
