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Ozone is a highly reactive molecule that easily reduces to the more stable oxygen form with the assistance of a catalyst. Cl and Br atoms destroy ozone molecules through a variety of catalytic cycles. In the simplest example of such a cycle, [18] a chlorine atom reacts with an ozone molecule (O
Titled “Stratospheric sink for chlorofluorocarbons: chlorine atom-catalyzed destruction of ozone”, the article laid out how a class of chemicals was wreaking havoc with the Ozone Layer ...
The Vienna Convention for the Protection of the Ozone Layer [1] is a multilateral environmental agreement signed in 1985 that provided frameworks for international reductions in the production of chlorofluorocarbons due to their contribution to the destruction of the ozone layer, resulting in an increased threat of skin cancer.
The difficulty of targeting ozone to destroy only pathogens in humans and not the surrounding tissue has lead non-targeted ozone therapy to fall in to disrepute. The dilemma of weighing the benefits of non-targeted killing pathogens using ozone was recognized since its first therapeutic uses in the 1800s. [21]
The ozone depletion potential (ODP) of a chemical compound is the relative amount of degradation to the ozone layer it can cause, with trichlorofluoromethane (R-11 or CFC-11) being fixed at an ODP of 1.0. Chlorodifluoromethane (R-22), for example, has an ODP of 0.05. CFC 11, or R-11 has the maximum potential amongst chlorocarbons because of the ...
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NASA projection of stratospheric ozone, in Dobson units, if chlorofluorocarbons had not been banned. Animated version . By 1987, in response to a dramatic seasonal depletion of the ozone layer over Antarctica , diplomats in Montreal forged a treaty, the Montreal Protocol , which called for drastic reductions in the production of CFCs.
Photo: Shutterstock. Design: Eat This, Not That!Chronic inflammation is not something to take lightly. In fact, research shows that chronic inflammatory diseases are the main cause of mortality in ...