ENVI 1011 Environmental Science III Global Atmosphere Assignment Due Date: 29th April 2011 Name: Slavica Kandic ID: s3185267 Station: Museum Question 1: Data is supplied for an EPA monitoring station, showing changes in levels of monitored pollutants during a day. You can get a copy of the data for your assigned station from s:\ug\ENVI1011 or the learning hub site for ENVI 1011. a) Describe the location and characteristics of the station b) Display the data on a suitable graph to show the relative changes in each pollutant during the day c) For each pollutant monitored, indicate …show more content…
(EPA) Nitrogen Dioxide (NO2) is secondary pollutant as it is formed by oxidation of nitric oxide in the atmosphere.Its formation is dependant on the concentration of hydrocarbons and level of solar radiation. Nitrogen Dioxide could be lethal in extremely high concentrations, eg. emission stacks,,but apart of these extreme ambient conditions,usually cause lung an respiratory disorders such as astma and bronchitis. Nitrogen dioxide is detected by chemiluminescence method. (EPA) Airborne Particle Index (API) are initially primary pollutant as originates from the dust,smoke, and fumes,lead,pollen,sulphates and nitrates,sea salt, microorganisms. On the other hand, particulates such as sulphates and nitrates can react with hydrocarbons to form organic particulates.These are categorized as seconday pollutants which are responsible for the haze, related to high concentration of oxidants in the atmosphere Health effects of the Airborne Particulates depends on size of the particle which ranges from 1-5µm.Particulates with stated diameter cause the maximum health risk as they penetrates into low airways causing astma or pneumonial failure,while larger particles are easily stopped with musoca in the nose,mouth and nose. For measurement of the Airborne Particulates a Nephelometer is used. The method is based on measuring the scattering of the aiir smple uing it as an index that is equivalent to local visibility, or conversely
Inhaling irritating particles or gases may lead to bronchitis. Bronchitis is a condition where the airways of the lungs that transport oxygen become irritated and
To be chivalrous you don’t need a shining amour to defeat a monster. This story is going to be about a young hero called Perseus who defeated a monster with only a sword and a shield. He was son of Danae and Zeus. Danae`s father (Acrisius) thought that if Danae had a son he was going to kill him, He thought of killing Danae but he knew that he would be punished by the Gods so he locked her in a room, so Zeus came in form of golden rain and got her pregnant(1122). When Perseus was a little bit older his grandfather found about him and he sent Perseus and his mother away in a chest that he had made, there was this fisher man in a island found them and let the live in his house but the fisherman’s brother was the king of the island and he wasn’t
Did you know many upper respiratory diseases such as asthma and others diseases like cataracts and skin cancer are aggravated by air pollution. The NRDC (Natural Resources Defense Council) states that “the following air pollutants are common triggers of asthma, ground level ozone, sulfur dioxide, fine particulate matter and nitrogen oxide.” Air pollution is the presence in or introduction into the air of a substance which has harmful or poisonous effects.
According to EPA (2016), air pollutants, especially fine particles (<2.5μm), can cause health risks to respiratory systems of both humans and animals. These pollutants can contribute to the formation of acid rain, damage vegetation, deplete nutrients in soil, contribute to cloud formation and affect climate, and reduce visibility. In addition, secondary pollutants can travel large distances from their point of formation, thus they can be a cause of concern for distant areas. Fortunately, as stated by Middlebrook et al. (2011), the DWH Oil spill had a limited impact on air quality due to the distance from
Pollutants are Sulfur dioxide, Nitrogen oxide, Pm10 particles (Big particles in the air, dust ,matter, etc.) And Carbon monoxide
What about children’s lungs? Nitrogen oxides, which are emitted from smokestacks, are known to irritate the respiratory tract. They also react with other pollutants to produce ozone, which is a key component of smog. And hazy, smoggy, ozone-filled air is just terrible for kids with asthma. There is particulate matter, especially the tiny particles with a diameter of less than 2.5 micrometers, which studies show can trigger asthma attacks. Children are especially vulnerable because they tend to breathe through their mouths, which means less filtering of pollutants by nose hair; they tend to hang out more outside, where levels of these pollutants are usually higher; and they run around a lot, which means they take in more nasty stuff and inhale it deep into their
For these early-arrange patients, the danger of death from any cause amid the study time frame was 30 percent more noteworthy with presentation to nitrogen dioxide, 26 percent higher with introduction to vast particulate matter and 38 percent greater with fine particulate matter, the study found.
The sulfur trioxide then dissolves in atmospheric water droplets to form sulfuric acid (SO3 + H2O → H2SO4). Molecules of nitrogen and atmospheric oxygen combine at very high temperatures to form nitric oxide. The high temperatures of natural processes such as lightning or those of combustion chambers of an engine are effective in causing this conversion (N2 + O2 → 2NO). Once in the atmosphere, nitric acid reacts with additional oxygen to form nitrogen dioxide, a toxic gas that causes irritation to the eyes and respiratory system (2NO + O2 →
The Clean Air Act enforces several programs that protect public health by regulating emission of hazardous air pollutants. These programs focus on many factors designed to improve public health and the environment. One focus includes the reduction of outdoor air pollutants that are responsible for causing acid rain, haze, smog, and other issues. Another requires the progressive elimination of production and use of chemicals proven responsible for depletion of the stratospheric ozone. The CAA also aims to reduce emissions of hazardous air pollutants that are suspected or known to cause detrimental health effects, including asthma and cancer. The most serious health risks are associated with two of the six common pollutants: particles and ozone. The efforts of the CAA have led to drastic improvements in the levels of these two pollutants. Between 1980 and 2012, the EPA found that national concentrations of ozone improved by 25%. Particle concentrations began being measured in 2000, and it was found that between 2000 and 2012, fine particle concentrations improved 37% and coarse particle concentrations improved 27% (2015). Due to these improvements, Americans inhale lower amounts of dangerous pollutants, which led to the prevention of 205,000 premature deaths solely in the year 1990 (U.S. Environmental Protection Agency,
A widely studied area in the impacts aviation has is researching air quality. There are two areas which have been getting a lot of attention and becoming more important relating to air quality. The first area is known as fine particulate matter (PM). PM is known as an air pollutant containing tiny particles floating in the air, sometimes creating a foggy, hazy look in the air. Compared to NOx, another compound found in emissions, PM is known to be a greater impact (Waitz, Townsend, Cutcher-Gershenfeld, Greitzer, Kerrebrock, 2004). One challenge the aviation industry is trying to overcome is measuring the PM caused by aircraft and PM caused by outside factors non-aviation related. There are currently no uniformly accepted methods for measuring both the PM and PM precursors from
Nitrogen Oxides (Nox) are common air pollutants that can be found in cigarette smokes, vehicle exhausts, and smog. They are a group og gases that are composed of nitrogen and oxygen. They can cause difficult breathing, throat spasms, and fluid build ups in the lungs. Nitrogen dioxides are proven to be dangerous to pregnant women because they
PM2.5 fine inhalable combustion particles connecting this to serious health problem including cardiovascular disease, aggravation of respiratory and premature deaths. PM10 standard to protection against the effect of dust, pollen, mold, etc. exposure to coarse particles (epa.gov). 1) Primary standard (health-based) and secondary-standard (welfare-based) protect public health with an adequate margin of safety, including the health of at-risk population/pre-existing condition. 2) Secondary standard (welfare-based) protection public welfare (the state of doing well) from adverse effects, including visibility impairment and known or anticipated on the environment.
When the air is contaminated by different types of harmful gases & particles ,then it is called air pollution .The addition of harmful chemicals to the atmosphere may be defined as the presence of one or more contaminants such as dust, fumes, gas, mist, odor, smoke or vapor in the atmosphere which may prove to be injurious to plant, animals and human life (Perkins, 1974).. The most serious air pollution results from the burning of fossil fuels, especially in internal-combustion engines(The American Heritage,2002).It means air is a transparent matter consisting of nitrogen & oxygen. may be defined as the presence of one or more contaminants such as dust, fumes, gas, mist, odor, smoke or vapor in the atmosphere which may prove to be injurious to plant, animals and human life (Perkins, 1974). In 2009, Johan Rockström (Stockholm Resilience Center) and a group of researchers from Europe, the U.S. and Australia, tried to identify the Earth-system processes and associated thresholds which, if crossed, could generate unacceptable environmental change . They found nine such processes for which they believe it is necessary to define planetary boundaries. Their analysis suggested that three of the Earth-system processes — rate of biodiversity loss, climate change, interference with the nitrogen cycle have already transgressed their boundaries (Rockström J, Steffen W, Noone K, Persson Å, Chapin FS, 2009).So, we have to reduce these kind of pollution at any case . in a
The two types of air pollutants I select for this discussion are carbon dioxide and ozone (or what is referred to as ground-level ozone). While carbon dioxide can be regarded a primary pollutant, ground-level ozone remains a secondary pollutant. Primary air pollutants according to the World Health Organization - WHO (2006) "are those that are emitted into the atmosphere from a source such as a factory chimney or exhaust pipe"¦" On the other hand, secondary pollutants according to the WHO (2006) "are those formed within the atmosphere itself." As WHO further points out, secondary air pollutants are a consequence of reactions (chemical) of those pollutants regarded primary. Carbon dioxide is considered a primary pollutant as it is emitted directly from its source, i.e. via vehicle exhaust pipe, etc. In basic terms, carbon dioxide as the World Health Organization (2006) points out is a product of the incomplete combustion of fuels containing carbon. Ground-level ozone is largely a product of the reaction between primary pollutants and sunlight.
Air pollution: The release of chemicals and particulates into the atmosphere. Common gaseous pollutants include carbon monoxide, sulphur 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.