Environment of Pakistan
The Air pollution is the release of chemicals and particulates into the atmosphere. Common gaseous pollutants include carbon monoxide, sulfur dioxide, chlorofluorocarbons (CFCs) and nitrogen oxides produced by industry and motor vehicles. Photochemical ozone and smog are created as nitrogen oxides and hydrocarbons react to sunlight. Particulate matter, or fine dust is characterized by their micrometre size PM to PM. The air in Karachi is rapidly polluted by automobile smoke, especially Rickshaws and Buses, industrial emissions, open burning of garbage, house fires, and other particles but the government and environment organizations seems non-serious to tackle the issue timely.
The two-stroke engines on rickshaws and motorcycles are one of the major polluters of air in Karachi and the rest of Pakistan. The two-stroke engines as well as defective or unturned vehicles are major polluters with carbon dioxide emissions. Two-stroke engines as well as defective vehicles using substandard lubricant are major emitters of sulfur dioxide and smoke. Automobiles operating on compressed natural gas and liquefied petroleum gas are major air polluters.
Khrew
Health of people is also severely affected. According to the report from the WHO, Khrew has a more death rate than any other town in the district due to these poisonous gases. These factories emit 100,000 kilograms of toxic fumes, poisonous gases and life-threatening elements in the air on daily basis. Lung disease is the main killer, second Kidney Failure and third Heart Diseases, these poisonous gases were declared responsible according to the report. The report also suggested that pollution control must intervene and check these factories on monthly basis whether the pollution control devices are functioning properly.