They will participate in a handson demonstration to visually demonstrate that everyone has an impact on air pollution. These can be helpful in understanding the spatial and temporal distribution of source emissions, which has a large impact on exposures to emissions from different sources. Outdoor air pollution and your health american thoracic society. Outdoor air pollution legal definition of outdoor air. The indoor environment also reflects outdoor air quality and pollution. The effects of air pollution wreck havoc on human health and our planet as a whole. Large cities with heavy traffic and large industrial areas often have higher levels of outdoor pollution. There are many things in the air we breathe that cause pollution, but here in dane county we are mostly concerned with ozone and particulate matter. Air pollution facts, causes and the effects of pollutants in. Air pollution is a major environmental risk to health. Lyongeneva, 17 october 20 the specialized cancer agency of the world health organization, the international agency for research on cancer iarc, announced today that it has classified outdoor air pollution as carcinogenic to humans group 1. The association between outdoor air pollution and a variety of disease outcomes including asthma, cancer, and cardiovascular disease has been extensively investigated. It was derived from the major policies of interest and existing academic literature. In 2012, one out of every nine deaths was the result of air pollution related conditions.
Air pollution, facts and information national geographic. Exposure to air pollutants is continuous and, usually, involuntary. Outdoor air pollution is a complex mixture of several pollutants. Outdoor air pollution an overview sciencedirect topics. This is a result of hike rapidly in urbanization, industrialization and huge volume of traffic in both developed under developed.
The established framework was a twodimensional matrix of outdoor air pollution and health outcomes. Cities are often centers of these types of activities, and many suffer from the effects of smog. In 2012, one out of every nine deaths was the result of air pollutionrelated conditions. Who air quality guidelines for particulate matter, ozone. Oecd glossary of statistical terms indoor air pollution. Vocs that escape from indoor uses of chemical products now make up a greater share of outdoor organic air pollution in urban areas. Envlinkages model, based on projections of emission factors from the gains model. Outdoor air pollution involves exposures that take place outside of. Outdoor ambient air quality is the condition of the air in the environment outside of buildings and accessible to people. Particle pollution particulate matter is a mixture of microscopic solids and liquid droplets suspended in air.
By reducing air pollution levels, countries can reduce the burden of disease from stroke, heart disease, lung cancer, and both chronic and acute respiratory diseases, including asthma. Air pollution is the name for the mixture of harmful particles and gases in the air around us that we breathe. The economic consequences of outdoor air pollution. Air pollution is one of the major problems faced by the world. Definition of outdoor air pollution outdoor air pollution ncbi. Only six air pollutants particulate matter, ground level ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, and lead known as criteria pollutants are routinely measured. This definition implicitly acknowledges that some substances that are considered to be air pollutants are present naturally. Educators in schools and universities teach students, beginning at very young ages, about the effects of air pollution. It results primarily from the action of sunlight on hydrocarbons and nitrogen oxides emitted in fuel combustion.
Air pollution is the human introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living things. Air pollution can come from a variety of sources including natural sources and manufactured sources. Researchers have investigated outdoor air pollution and have developed standards for measuring the type and amount of some serious air pollutants. Air pollution is a mixture of natural and manmade substances in the air we breathe. Outdoor air pollution involves exposures that take place outside of the built environment. Airborne pollutants, such as gases, chemicals, smoke particles, and other substances, reduce the value of and ability to enjoy affected property and cause significant health and environmental problems. This report,the economic consequences of outdoor air pollution, presents projections of the costs of outdoor air pollution, focusing on impacts on human health, including both mortality and morbidity, and agriculture. Indoor air pollution and poor urban air quality are listed as two of the worlds worst toxic pollution problems in the 2008 blacksmith institute worlds worst polluted places report. This is because the air becomes dirty contaminated or unclean. Air pollution already affects human health, agriculture and leads to a range of other impacts. Indoor and outdoor air pollution pulmonology advisor.
Since mixtures of air pollutants are ubiquitous in the urban atmosphere, it has been difficult to ascertain the specific pollutants responsible for the. Learn about what causes air pollution and how to help reduce the effects. Exposure to indoor and outdoor air pollutants may increase an individuals risk for morbidity and mortality from a variety of different conditions in multiple organ systems. How can outdoor air pollution affect a person with copd. Outdoor air pollution air quality ministry of health. Burning of fossil fuels by motor vehicles including cars, buses and trucks and. Indoor air quality is influenced by concentrations of outdoor air pollutants, indoor sources of pollution, characteristics of the building and the habits of the residents. Air pollution may also cause sensory irritation and decrease wellbeing. Outdoor air pollution a leading environmental cause of cancer deaths. The weight of an air contaminant in a cubic meter of air 3mgm and the volume ratio ppm v, or just ppm are normally used. Other pollution sources include smoke from bushfires, windblown dust, and biogenic emissions from vegetation pollen and mould spores. Government regulation and emission reduction technology for vehicles and factories have decreased emissions from certain point sources of outdoor air pollution. In 1970, congress passed the clean air act that established national air pollutant standards for 6 criteria pollutants. Pdf causes, consequences and control of air pollution.
Burning of fossil fuels by motor vehicles including cars, buses and trucks and power plants including. Disease gbd study estimates that air pollution indoor and outdoor combined was the cause of 5. These impacts are projected to become much more severe in the coming decades. Outdoor air pollution article about outdoor air pollution. This image represents illustrative examples of sources of air pollution. Sources of air pollutants outdoor air pollution ncbi. In developing countries, the main source of indoor air pollution is biomass smoke which contains suspended particulate matter 5pm, nitrogen dioxide no2, sulphur dioxide so2, carbon monoxide ca, formaldehyde and polycyclic aromatic hydrocarbons pahs. Ozone o3 is a highly reactive gas that is a form of oxygen. Air pollution represents the biggest environmental risk to health. Outdoor air pollutants montgomery county, maryland. Oecd policy highlights the economic consequences of outdoor air pollution 1 the economic consequences of outdoor air pollution findings.
Air pollution from different sources harmfully affects to population. In developing countries, the main source of indoor air pollution is biomass smoke which contains suspended particulate matter 5pm, nitrogen dioxide no2, sulphur dioxide so2, carbon monoxide ca. Both the consequences for the economy and the welfare costs from premature deaths and pain and suffering are quantitatively. More than half of this disease burden is borne by the populations of developing countries. Exposure to outdoor air pollution and its humanrelated. Major air pollutants and pollutant classes of interest, their physical state, and their sources. Indoor air pollution refers to chemical, biological and physical contamination of indoor air.
The rows and columns of the array included all categories of outdoor air pollution and human healthrelated outcomes, respectively. Environmental pollution is tangled with the unsustainable anthropogenic activities, resulting. The common sources of outdoor air pollution are emissions caused by combustion processes from motor vehicles, solid fuel burning and industry. Published by the arab school for science and technology asst. The economic consequences of outdoor air pollution oecd. Outdoor air pollution scope of the problem worldwide, outdoor air pollution contributes to. Air pollution is produced by both human activity and naturally occurring events. Sources of outdoor or ambient air pollution are varied and include both natural and manmade ones. Our goal is to reveal to you all of the key factors regarding indoor air pollutants and help you determine if this is something you should be concerned with or not.
While an air purifier or air sanitizer can temporarily cleanse indoor air of some its pollutants, it is far more difficult and complicated to resolve the problem of outdoor air pollutants. Definition of outdoor air pollution outdoor air pollution. Even healthy people can experience health impacts from polluted air including respiratory irritation or breathing difficulties during exercise or outdoor activities. Outdoor air pollution definition of outdoor air pollution. It is caused by chemical reactions between pollutants derived from different sources, primarily automobile exhaust and industrial emissions. Air pollution occurs when gases, dust particles, fumes or smoke or odour are introduced into the atmosphere in a way that makes it harmful to humans, animals and plant. This pollution, also known as particulate matter, is made up of a number of components, including acids such as nitrates and sulfates, organic chemicals, metals, soil or dust particles, and allergens such as fragments of pollen or mold spores.
Indoor air pollution may arise from the use of open fires, unsafe fuels or combustion of. Definitions and classifications used in the study of air pollution are introduced. Natural sources include forest fires and volcanoes, while cars, trucks, trains, planes, boats, factories, and power plants contribute to air pollution through manufactured sources. Air pollution 101 introduction students will gain background knowledge of the basic sources of air pollution, along with the overview of how air pollution affects our health and our environment. Of those deaths, around 3 million are attributable solely to ambient outdoor air pollution. Begin by giving a little of the history of outdoor air pollution. An introduction to air pollution definitions, classifications, and history. Pdf this chapter discusses outdoor air pollution in school environments.
Sources of air pollutants can be divided into several types. Outdoor air pollution legal definition of outdoor air pollution. The who air quality guidelines are designed to offer guidance in reducing the health impacts of air pollution. Air pollution affects all regions, settings, socioeconomic groups, and age groups.
Pdf air pollution is one of the major problems faced by the world. Air pollution is contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere. The first step to solving air pollution is assessment. Exposure to outdoor air pollution and its human health. Those are all examples of outdoor air pollution, but. Air pollution can have detrimental impacts on humans, animals, plants, and water. Outdoor pollution describes irritants in the air outside the home. When you think of air pollution, you probably think of things like smog, power plants and emissions from cars and trucks. These exposures cause andor exacerbate respiratory diseases and diseases in other organ systems. Characteristics of exposure to outdoor air pollution. In this era, air pollution cause a high risk for the safety of the world.
Your actual risk of adverse effects depends on your current health status, the pollutant type and concentration, and the length of. Air pollution 101 ucar center for science education. Outdoor pollution primarily results from the combustion of fossil fuels by industrial plants and vehicles. Ozone reacts chemically oxidizes with internal body tissues that it comes in contact with. Despite considerable air pollution prevention and control measures that have been put into practice in recent years, outdoor air pollution remains one of the most important risk factors for health outcomes.1358 1212 932 1502 839 763 554 239 56 1265 1574 469 397 803 397 834 1479 203 1245 1606 558 200 616 772 799 245 393 1060 891 104 41 236