A STUDY OF ENVIRONMENTAL IMPACT OF AIR POLLUTION ON HUMAN HEALTH: PM DEPOSITION MODELLING

Abstract

<p>Earth is consisting of land, air and water. Air contains oxygen, nitrogen, carbon dioxide, water vapor, other gases are present above the permissible limit, and it creates effects on human health. It is one of the most important public health issues due to development of urbanization, industrialization and globalization in large cities. Air pollution levels in developed countries have been increased in recent years. In developing countries air pollution levels are still high. In recent years, the health studies have become visible showing harmful health effects in lungs and respirable system. Air pollution is responsible for 7million deaths annually. It affects the health of humans and other living beings in our world. The government has developed the guidelines for air quality and rule to restrict emissions in effort to control air pollution. These updated AQGs provide exact guidelines for PM 10 and pm 2.5. The primary objective of this paper is to study the ambient air quality and its impact on lungs. Particulate matters are the particles suspended in air/atmosphere. Mainly PM10and PM 2.5Ultra fine particles (<1µm) are mainly responsible for causing interruption for human health.PM10 and PM2.5 are characterized by their presence only within the upper respiratory tract. Some PM 2.5 and Ultra fine particles are characterized by their presence deeper regions of alveoli. Ultrafine particles (PM0.1), which are present in the air in large numbers, pose a health risk. They generally enter the body through the lungs but translocation to essential organs. Compared to fine particles (PM2.5) ,they cause more pulmonary inflammation and are retained longer in the lung. Their toxicity is increased with smaller size, larger surface area, adsorbed surface material, and the physical characteristics of the particles. Exposure to PM0.1 induces cough and worsens asthma. Metal fume fever is a systemic disease of lung inflammation most likely caused by PM0.1. The disease is manifested by systemic symptoms hours after severe exposure to PM0.1 could cause systemic inflammation, endothelial dysfunction, and coagulation changes that predispose individuals to cardiovascular disease and hypertension.</p>