Refrigerator disposal releases ozone-depleting chemicals

nces normally last for around 20 years, Kjeldsen said.

"Use of these results may help evaluate changes in the atmospheric concentrations of CFC-11 in the future," he said. "They add to the understanding of a very important source of CFCs."

Chlorine contained in CFCs damages the earth's ozone layer, a thin shield of oxygen that protects the planet from ultraviolet radiation. A single chlorine atom — contained in CFCs and also found naturally — can destroy more than 100,000 ozone molecules, although ozone can be reformed over time by a chemical reaction stimulated by sunlight. The upper part of the atmosphere known as the stratosphere contains approximately 3 billion kilograms of ozone — enough to create a layer about an eighth of an inch thick that circles the globe.

Depletion of the ozone layer leads to higher levels of a certain type of ultraviolet (UV) radiation reaching the earth's surface. Previous testing has shown that higher UV-B levels increase the risk of skin cancer, harm plant life, reduce the population of sea life and contribute to the increase of carbon dioxide and other greenhouse gases believed to be responsible for atmospheric warming, according to the U.S. Environmental Protection Agency.

Because of the dangers of exhausting the ozone layer, more than 120 countries signed the 1987 "Montreal Protocol" to control CFC emissions. After 1995, when production of most CFCs stopped, they ceased being used in aerosol cans and in the coolant known as Freon. New products, including refrigerators, use substitutes with similar properties. Additional amounts of CFC-11 can be found in air conditioners, insulation and some industrial appliances. A different type of CFC is used in the product marketed as Styrofoam.


Contact: Beverly Hassell
American Chemical Society

Page: 1 2

Related biology news :

1. Skull Of Refrigerator-Size Ancient Armadillo Finds A Home At UF
2. Circulation of disaster myths in Haiti could hinder appropriate disposal of bodies
3. Efficient plastic nuggets key to agricultural plastic waste disposal
4. RING Finger proteins target cellular molecules for disposal
5. Nuclear waste disposal: A safer solution?
6. New molecular key to disposal of dying cells
7. 5AM Solutions releases Microarray Enterprise Manage(TM) Software
8. Joslin Diabetes Center releases new low impact exercise video
9. The American Academy of Microbiology releases report
10. Academy Harbor Consortium releases letter on mercury to President Bush
11. The American Academy of Microbiology releases report

Post Your Comments:

(Date:9/26/2015)... 26th, 2015  Results of a TactioRPM pilot ... today at the Stanford Medicine X Conference. In ... Dashboards, Connected Health Devices and Pharmacogenomics", Roger ... will explain how senior patients equipped with connected ... pharmacist via the TactioRPM remote patient monitoring platform ...
(Date:9/24/2015)... September 24, 2015 ... 2015 Kerv ( http://kerv.com ... lanserar idag världens första kontaktlösa betalningsring på ... 77 000 GBP för massproduktion via crowdfunding.  ... ) , Kerv-bärare kan göra ...
(Date:9/10/2015)... -- Report Details Emerging Biological Drugs ... Revenue Prospects to Help You Stay Ahead ... drug classes? Get the latest technological and commercial ... data and industry knowledge, benefitting your influence. And ... sales predictions. Visiongain,s new study reveals what,s ...
Breaking Biology News(10 mins):
(Date:10/12/2015)... , Oct. 12, 2015 /PRNewswire/ - Aeterna Zentaris ... biopharmaceutical company engaged in developing and commercializing novel treatments ... departure of Dennis Turpin , the Company,s former ... to close its Quebec City ... President and Chief Executive Officer of the Company commented, ...
(Date:10/12/2015)... LabStyle Innovations Corp. (OTCQB: ... announced its Medical Director, Dr. Moshe Kamar , ... 5th EAI International Conference on Wireless Mobile Communication and ... mobile and wireless technologies," the conference will take place ... 14 - 16, 2015. The conference is endorsed and ...
(Date:10/12/2015)... , Oct. 12, 2015 VolitionRx Limited ... completed clinical study of its NuQ ® blood-based test ... online issue of Clinical Epigenetics , the official journal ... in collaboration with Lund University, ... , MD, PhD, Professor of Surgery and Vice-Dean, Faculty of ...
(Date:10/12/2015)... ... October 12, 2015 , ... NeuMedics Inc., is a specialty biopharmaceutical ... that can safely and chronically be administered as an eye drop, announced today it ... The Cleveland Clinic and taking place October 25th to October 28th at The Cleveland ...
Breaking Biology Technology:
Cached News: