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首页> 外文期刊>Journal of Atmospheric Pollution >Particulate Matter from Motor Vehicles in Nairobi Road Junctions Kenya
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Particulate Matter from Motor Vehicles in Nairobi Road Junctions Kenya

机译：肯尼亚内罗毕路口的机动车颗粒物

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Motor air pollution has become a problematic issue both within as it contributes to environmental degradation. It is evident that air crises in cities continue to rise partly because of the increasing levels of motor vehicle emissions. With the expansion of the economic base, cities such as Nairobi also expand paving the way for an increase in motor vehicle ownership and use, which lead to higher rates of pollution. Given that exposure to pollutants is harmful to human health, the traffic police are vulnerable because members are constantly uncovered to motor vehicle fumes. The survey interviewed a purposive and non-random stratified sample of 127 police officers, according to their seniority, years of employment and work experience, from the target population of traffic police working in major road junctions within the CBD, Nairobi Kenya. The sampled junctions were Kamukunji, Railways terminal, University way and Uhuru roundabouts. In addition, from the leadership rank, five (5) key informants were also interviewed. Data was collected using self-administered questionnaires. Discussions were held with the key informers. The findings show that there are that the high concentrations of PM2.5 in Nairobi major roundabouts is attributed to vehicular traffic congestion and worsened with poorly maintained and old vehicles. The significantly high values obtained compared to World Health Organization 24 hr guideline of 25 μg m-3 (2000) creates a severe health issues to regular pedestrians and workers around those areas. The study exposes that there are association between fine particulates and motor vehicles (r = 0.93), signifying that vehicular emissions is foremost source of fine particles in the atmosphere.
机译：车内空气污染已经成为一个有问题的问题，因为它会导致环境恶化。显然，由于机动车排放水平的提高，城市的空气危机仍在继续上升。随着经济基础的扩大，内罗毕等城市也为扩大机动车保有量和使用量铺平了道路，这导致了更高的污染率。鉴于暴露于污染物对人体健康有害，因此交警非常容易受到伤害，因为成员经常被发现有汽车烟雾。这项调查根据他们的资历，工作年限和工作经验，从肯尼亚内罗毕中央商务区主要道路交界处的交通警察的目标人群中，对127名警官进行了有目的性和非随机分层抽样。采样的路口是Kamukunji，铁路终点站，大学路和Uhuru回旋处。此外，在领导层，还采访了五（5）名关键线人。使用自我管理的问卷收集数据。与关键线人进行了讨论。研究结果表明，在内罗毕主要环形交叉路口PM2.5的高浓度归因于车辆的交通拥堵，维修不良和旧车使情况更加恶化。与世界卫生组织24小时25μgm-3的准则（2000年）相比，获得的极高价值对这些地区的普通行人和工人造成了严重的健康问题。该研究表明，微粒与机动车之间存在关联（r = 0.93），这表明车辆排放是大气中微粒的最主要来源。

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