Ozone

Ozone and Global Environmental Politics A thin layer of gas called atmosphere surrounds the Earth. The atmosphere serves two important purposes: it is a filter for the suns dangerous ultraviolet radiation rays and keeps the heat, necessary to maintain life on earth, within the stratosphere (Vorlat 361). Ultraviolet light is incredibly dangerous to all the organisms within the Earth's ecosystem because it causes skin cancer, effects the immune system, and harms plant and animal life

What we now call the ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson. Caroline et al suggests the earth’s atmosphere has five layers; they are placed in order of closest and deepest to farthest and thinnest. They include the troposphere, stratosphere, mesosphere, thermosphere and exosphere. (Tran, Caroline, Dan Chong, Anne Keith, and Jordan Shively. "Depletion of the Ozone Layer." UC Davis ChemWiki. STEMWiki Hyperlibrary). Ozone is a naturally occurring

The Implications of Ozone Depletion on Human Health Introduction Hairspray. Refrigerators. Air conditioners. These everyday luxuries, while making human life more comfortable, are taxing our health seriously. Clorofluorocarbons, or CFCs, are anthropogenic chemicals used in refrigerants and as propellants in aerosols. CFCs, also known as freons, are also the primary culprit behind the depletion of stratospheric ozone, which allows harmful ultraviolet rays to reach the Earth and its inhabitants

Ozone Depletion and Its Negative Effects on Aquatic Skin The Ozone is made up of three oxygen molecule joint together by covalent bond (O3) which is mostly found in the stratosphere of the Earth. Although it is a poisonous gas, it is important in many ways for human as well as other aquatic and terrestrial animals. But due to the large emission of the halogens and CFCs ozone is being depleted rapidly (Vermishev and Danilov-Danilyan 360-361). The enormous disadvantage of the ozone layer depletion

cancer to increases in ground-level UV-B radiation due to ozone depletion. According to the latest Scientific Assessment of Ozone Depletion issued by the United Nations and the US Government, human-influenced ozone-depletion may peak around 1998 and will persist well into the 21st century. For the US and other mid- latitude countries of the Northern Hemisphere, ozone losses during summer and fall months may peak at 6-7% relative to ozone concentrations in the 1960s. Winter/spring depletion could

Books that refers to the same subject. Results Based on this research we realize that Ozone bleaching has already been industrially implemented, experienced and improved for 18 years. It is a well proven and safe process, currently used by dentist in their clinics among the most modern in the world Its advantages in terms of bleaching cost

photodegradation (single-phase system) to treat contaminated water, involves the use of an oxidant to generate radicals, which attack the organic pollutants to initiate oxidation. The major oxidants used are: •Hydrogen peroxide (UV /H2O2) •Ozone (UV /O3) •Hydrogen peroxide and Ozone (UV /O3/H2O2) •Photo-Fenton system (Fe+3 /H2O2) 1.2.1.4. Hydrogen peroxide The use of hydrogen peroxide as an oxidant brings a number of advantages in comparison to other methods of wastewater treatment. Commercial availability

Ballast water is used every day by thousands of ships to control trim, stability, list and the stresses of the vessel. Ballast water is picked up in one part of the world but then can be discharged in another, in doing this the transfer of non-indigenous invasive aquatic species can occur. These species end up destroying ecosystems that they are not originally a part of. Therefore many standards and regulations have come about in how to exchanging ballast so as to reduce the transfer of these species

heat illnesses and loss of life. Several vector borne diseases only occur in warm areas, and an increase in temperature could mean a spread of these diseases to larger areas. Also, warm temperatures can increase levels of air pollutants, including ozone, which can harm human health. Direct Effects: The most direct way that a rise in global mean temperature will affect human health is through a more frequent occurrence of heat waves. Heat can seriously harm or even kill during a heat wave

this year with a four-part series of articles. They highlighted an increase in ozone levels across the city during 2015. It is suggested that this could possibly cause Houston to exceed EPA regulations. Houston and other surrounding areas in Texas need to commit to changes that can lower ozone average levels in 2016. People living in these communities are at particular risk of serious health effects due ground-level ozone and smog. There is a wealth of scientific evidence on the development of asthma