一条主要乡村公路特定污染物的综合预算。
An integrated budget for selected pollutants for a major rural highway.
作者信息
Hewitt C N, Rashed M B
机构信息
Institute of Environmental and Biological Sciences, University of Lancaster, United Kingdom.
出版信息
Sci Total Environ. 1990 Apr;93:375-84. doi: 10.1016/0048-9697(90)90128-h.
A comprehensive study has been made of the fluxes of selected pollutants emitted from a major rural highway in NW England. Lead, cadmium, copper, the organic compounds of lead and 8 PAH species have been studied and their fluxes measured in bulk deposition samples in transects away from the road in the road runoff waters and its associated sediments and in soil profiles. Data collected in detail over one year indicate that, in the case of lead, 8% of the emitted metal is removed in the drainage waters 6% is deposited in the first 50 m adjacent to the motorway and approximately 86% is dispersed in the atmosphere away from the immediate vicinity of the road. Uncertainties in the emission rates of the other metals prevent such budget calculations being made. The amount of PAH removed away from the road environment by the atmosphere varies from approximately 99% for the lowest molecular weight compounds to approximately 70% for the heavier compound.
对英格兰西北部一条主要乡村公路排放的特定污染物通量进行了全面研究。研究了铅、镉、铜、铅的有机化合物以及8种多环芳烃（PAH）物种，并在远离道路的样带中的大气沉降样品、道路径流及其相关沉积物以及土壤剖面中测量了它们的通量。一年来详细收集的数据表明，就铅而言，排放的金属中有8%在排水中被去除，6%沉积在高速公路附近的前50米处，约86%则在远离道路附近区域的大气中扩散。其他金属排放率的不确定性使得无法进行此类预算计算。大气从道路环境中去除的多环芳烃量，对于分子量最低的化合物约为99%，对于较重的化合物约为70%。
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