Bøger af Isma Younes

Lahore is one of the cities most effected by uncontrolled noise pollution in Pakistan. The most important factor of noise pollution is the road traffic. The main objective of this study was to analyze and evaluate road traffic noise and to measure its effects on the population of Lahore city. A weighting sound level meter was used in the study. All the measurements were taken at a height of about 1.2 m from the ground at 56 sample sites. The spatial noise pattern was shown in maps. These were also drawn to show buffers dividing areas into moderate, high and extremely high risk zones in accordance with noise risk levels. The maps were additionally divided in day and night time maps, each with graduated symbols. The main day-night values were exceeding the permissible environmental standards used in Pakistan. Therefore, a survey was conducted to study the diseases caused by noise pollution in the areas with highest noise levels.

This study reports the air pollution vulnerability mapping of Lahore city and provides information about the vulnerability levels of air pollutants at various places of Lahore. The air quality monitoring activities have been carried out at five places of Lahore and each location is monitored for six air pollutants which are carbon monoxide, sulphur dioxide, nitrogen dioxide, hydrogen sulphide, ammonia and chlorine by a reagent absorption method. The sources and concentrations have been discussed. The data obtained from sampling at various commercial and residential sites is compared against the past year data and the comparison graphs are plotted to show the trend of these air pollutant. The spatial patterns of monthly mean precipitation and monthly mean temperature have been studied. A public survey has been conducted that shows the public awareness in regard to basic information regarding air pollution. In the end some conclusions and recommendations are given for the purpose to maintain a healthy environment for our citizens, support the strategies, to maintain energy independence and promote an effective role in formulating the environmental policies.

Lahore city is very highly polluted. The major causes of this are an alarmingly increasing number of motor vehicles and a large number of industries. This research highlights the spatio-temporal patterns of sample pollutants including Sulfur dioxide, Oxides of Nitrogen, Carbon monoxide Ozone, and Particulate matter. The concentrations of these pollutants have been monitored at ten sample sites in the city. The effects of increasing air pollution on population of study area have been studied using questionnaire techniques.