ozone depletion

(redirected from Ozone-depleting substance)

ozone depletion

The ongoing reduction of ozone in the stratosphere. Ozone (O3) is present in 1 ppm in the upper stratosphere, and it absorbs virtually all of the UV radiation from the sun; increased rates of sun-induced malignancies (e.g., melanomas) have been attributed to the destruction of the ozone layer. Ozone depletion is caused by the release of chloride ions from CFCs (chlorofluorocarbons) after release from air conditioners, spray cans, and manufacturing plants that produce electronics and plastics. CFCs degrade in the atmosphere, release chlorine and cause ozone destruction, remain free, or react with ozone to form ClO (chlorine monoxide); O3 is being depleted at a rate of 4–5% per decade.
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References in periodicals archive ?
A high-ranking official of the United Nations Environment Program (UNEP) on Tuesday said the Philippines is on the right track in implementing global phaseout of ozone-depleting substance (ODS) utilization.
Washington, August 28 (ANI): A new study has determined that nitrous dioxide, popularly known as 'laughing gas', has now become the largest ozone-depleting substance emitted through human activities, and is expected to remain the largest throughout the 21st century.
Halon 1301 is a Class I ozone-depleting substance, which is harmful to the environment.
The EPA identifies methyl bromide as a Class I ozone-depleting substance that will be phased out under the Clean Air Act.
As of May 15, 1993, any container or product containing or manufactured with an ozone-depleting substance must be labeled with a warning informing the customer of that fact.
During the same year, developed and developing nations should eliminate bromochloromethane, a relatively new ozone-depleting substance. Industrialised countries will also be expected to complete the phasing out of hydrochlorofluorocarbons and methyl bromine over the coming years...JJ:(AME)
Parliament committee for economic and fiscal policy considered the protocol on the accession of the Kyrgyz Republic to the Agreement on Movement of Substances that Deplete the Ozone Layer and accounting ozone-depleting substances in mutual trade of the Eurasian Economic Union member states dated May 29, 2015, signed on August 12, 2016 in Sochi, Russia.
Nations of the world began phasing out the use of ozone-depleting substances in 1987 under an international treaty known as the Montreal Protocol.
Philippines to phase out last ozone depleting substances !-- -- Rhodina Villanueva (The Philippine Star) - October 4, 2018 - 12:00am MANILA, Philippines ThePhilippines is focused on phasing out the supposed last batch of ozone-depleting substances (ODS) ndash the hydrochlorofluorocarbons or HCFCs ndash ahead of the 27-year schedule from 2013 to 2040.
This protocol specifies the procedures and strategies that must be followed internationally, regionally and locally in order to gradually phase out ozone-depleting substances.'