Department of Mechanical Engineering, Covenant University, Ota, Ogun State, Nigeria.
Environ Monit Assess. 2010 Jan;160(1-4):563-77. doi: 10.1007/s10661-008-0719-2.
Evaluation and analysis of noise pollution levels have been carried out to determine the level of noise and its sources in Ilorin metropolis. Noise measurements have been done in the morning, at noon, in the evening, and at night to determine noise pollution all over the city. The selected areas of study are commercial centers, road junctions/busy roads, passenger loading parks, and high-density and low-density residential areas. The road junctions had the highest noise pollution levels, followed by commercial centers. The results of this study show that the noise levels in Ilorin metropolis exceeded allowed values at 30 of 42 measurements points. There is a significant difference (P<0.05) in the noise pollution levels and traffic noise index in all the locations. From the measured noise values, a map of noise pollution was developed for Ilorin. Many solutions proposed for noise abatement in the city are set out.
已对伊洛林都会区的噪声污染水平进行了评估和分析，以确定噪声水平及其来源。在全市范围内进行了噪声测量，包括早上、中午、晚上和夜间，以确定噪声污染。选择的研究区域包括商业中心、道路交叉口/繁忙道路、乘客上车点和高密度及低密度住宅区。道路交叉口的噪声污染水平最高，其次是商业中心。本研究结果表明，伊洛林都会区的噪声水平在 42 个测量点中的 30 个超过了允许值。所有地点的噪声污染水平和交通噪声指数均有显著差异（P<0.05）。根据测量的噪声值，为伊洛林绘制了一张噪声污染图。还提出了许多针对该城市的噪声减轻方案。
