美国论文：公路隧道对环境的影响
世界上几乎每个地方都修建了公路隧道。这些都是为了交通便利，但对那些住在隧道附近的人有很大影响。本文将考察隧道附近的空气质量，并对隧道附近的空气质量进行分析。从结果来看，可以确定隧道附近的空气质量很差，对人们有严重的影响。
美国论文：公路隧道对环境的影响
近年来，许多社区对隧道的发展表示关注。据观察，隧道对空气质量有显著的影响。为了发现空气质量的影响，对这些隧道附近的居民进行了研究。发现在这些隧道附近有较高水平的乙二醛和甲基乙二醛。隧道还包括一些其他有害化合物，如含氧有机化合物的亚类，它们可能具有高度的活性。这些化合物还能导致自由基、臭氧和次生有机气溶胶的产生。一些羰基，如甲醛和乙醛，已被确认是存在于隧道附近的主要有毒物质。这些物质对人类有重要影响(Bari & Naser 2005)。乙醛和甲基乙二醛是在VOC被氧化后形成的化合物，VOC是从隧道中直接排放出来的。这些隧道还包括有害气体，如一氧化碳(CO)，二氧化氮(NO2)和二氧化硫(SO2)。
美国论文：公路隧道对环境的影响
Road tunnels have been created in almost each and every part of the world. These are meant for the ease of the traffic but it has a huge impact on the people who are living closer to the tunnels. In this research paper, the air quality near the tunnels will be examined and there will be an analysis of the air quality near the tunnels. From the results, it could be ascertained that the air quality near the tunnels is very bad and have a serious impact on the people.
美国论文：公路隧道对环境的影响
In the recent past, a large number of communities have expressed concerns related to the tunnel developments over the years. It is observed that the tunnels have a significant impact on the air quality. In order to find the impact of air quality, the researches were conducted on the people who live near these tunnels. It has been found that there are higher levels of Glyoxal and Methylglyoxal are there near these tunnels. The tunnels also consist of some other harmful compounds such as the subset of oxygenated organic compounds which could be highly reactive. These compounds can also lead to the development of the free radicals ozone and Secondary Organic Aerosols. Some of the carbonyls such as formaldehyde and acetaldehyde have been identified to be primary toxic substances present near the tunnel. These substances can have a vital impact on the human beings (Bari & Naser 2005). The compounds Glyoxal and Methylglyoxal are formed after the oxidation of VOC’s which are emitted from the direct emissions from the tunnels. These tunnels also consist of the harmful gases such as Carbon Monoxide (CO), Nitrogen Dioxide (NO2) and Sulphur di Oxide (SO2).
