Deposition of airborne organic pollutants on historic buildings

C. Saiz-Jimenez
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引用次数: 136

Abstract

The black crusts coating the surfaces of building materials located in urban (polluted) environments contain all kinds of organic compounds present in aerosols and particulate matter. Wet and dry deposition processes combined with gypsum crystal growth result in dirty, grey-to-black crust formation, in which aerosols, spores, pollen, dust and every class of particulate matter are entrapped in the mineral matrix. Analysis of the organic compounds extracted from black crusts demonstrate them to be mainly composed of molecular markers that are characteristic of petroleum derivatives. The composition of each crust is governed by the composition of the particular airborne pollutants in the area.

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空气中有机污染物在历史建筑上的沉积
覆盖在城市(污染)环境中的建筑材料表面的黑色外壳含有气溶胶和颗粒物中存在的各种有机化合物。干湿沉积过程与石膏晶体生长相结合,形成肮脏的灰黑色外壳,其中气溶胶,孢子,花粉,灰尘和各种颗粒物质被困在矿物基质中。从黑壳中提取的有机化合物分析表明,其主要由具有石油衍生物特征的分子标记组成。每个地壳的组成是由该地区特定空气污染物的组成决定的。
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