Out-Door Air Pollution Levels in Vehicular-Traffic Junctions in Nsukka Metropolis, Enugu Metropolis and Awgu Semi-Urban Area in Enugu State, Nigeria

• 作者: Ezeh Ernest Ikusika Bamidele Adunola Nwigwe Juliet Onyinye Okeke Cecilia Ifeyinwa Okeke Onyeka
• 来源期刊: 大气污染开放期刊(英文)
• 学科: 数学
• 关键词: Air Pollution Vehicular Traffic Junctions PM2.5 Carbon II Oxide Sulphur IV Oxide Nitrogen IV Oxide and Ozone
• 年，卷（期）: 2020,（4）
• 页码范围: 105-115
• 页数: 11页
• 分类号: O17

摘要

Studies were carried out to investigate the outdoor air pollution levels in vehicular traffic junctions in the major cities of Nsukka, Enugu and semi-urban area of Awgu all in Enugu State, Nigeria using standard analytical procedures. PM</span>_{<span style="font-family:Verdana;">2.5</span>}<span style="font-family:Verdana;"> was collected using Envirotech air sampler, APM 550 and analyzed gravimetrically. Other determined air pollutant gases such as SO</span>_{<span style="font-family:Verdana;">2</span>}<span style="font-family:Verdana;">, NO</span>_{<span style="font-family:Verdana;">2</span>}<span style="font-family:Verdana;">, O</span>_{<span style="font-family:Verdana;">3</span>}<span style="font-family:Verdana;"> and CO were analyzed using colorimetric techniques. The mean hourly traffic density in the vehicular traffic junctions in Nsukka metropolis, Enugu metropolis and Awgu w</span></span><span style="font-family:Verdana;">ere</span><span style="font-family:""><span style="font-family:Verdana;"> 2015, 2873 and 587 respectively. The mean range of values of PM</span>_{<span style="font-family:Verdana;">2.5</span>}<span style="font-family:Verdana;">, NO</span>_{<span style="font-family:Verdana;">2</span>}<span style="font-family:Verdana;">, SO</span>_{<span style="font-family:Verdana;">2</span>}<span style="font-family:Verdana;">, O</span>_{<span style="font-family:Verdana;">3</span>}<span style="font-family:Verdana;"> and CO in vehicular traffic junctions within the investigated environments w</span></span><span style="font-family:Verdana;">ere</span><span style="font-family:""><span style="font-family:Verdana;"> 1.67 - 12.16 μg/m</span>^{<span style="font-family:Verdana;">3</span>}<span style="font-family:Verdana;">, 3.72 - 23.83 μg/m</span>^{<span style="font-family:Verdana;">3</span>}<span style="font-family:Verdana;">, 2.96 - 30.09 μg/m</span>^{<span style="font-family:Verdana;">3</span>}<span style="font-family: