Navigation Links
Chemicals that eased one environmental problem may worsen another
Date:6/16/2010

Chemicals that helped solve a global environmental crisis in the 1990s the hole in Earth's protective ozone layer may be making another problem acid rain worse, scientists are reporting. Their study on the chemicals that replaced the ozone-destroying chlorofluorocarbons (CFCs) once used in aerosol spray cans, air conditioners, refrigerators, and other products, appears in ACS' Journal of Physical Chemistry A, a weekly publication.

Jeffrey Gaffney, Carrie J. Christiansen, Shakeel S. Dalal, Alexander M. Mebel and Joseph S. Francisco point out that hydrochlorofluorocarbons (HCFCs) emerged as CFC replacements because they do not damage the ozone layer. However, studies later suggested the need for a replacement for the replacements, showing that HCFCs act like super greenhouse gases, 4,500 times more potent than carbon dioxide. The new study adds to those concerns, raising the possibility that HCFCs may break down in the atmosphere to form oxalic acid, one of the culprits in acid rain.

They used a computer model to show how HCFCs could form oxalic acid via a series of chemical reactions high in the atmosphere. The model, they suggest, could have broader uses in helping to determine whether replacements for the replacements are as eco-friendly as they appear before manufacturers spend billions of dollars in marketing them.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert  

Page: 1

Related medicine news :

1. Alternative chemicals ease safety concerns about nonstick, repellent coatings
2. Mount Sinai finds prenatal exposure to certain chemicals affects childhood neurodevelopment
3. Poop dermatitis linked to fashionable toilet seats, harsh chemicals
4. Workplace Chemicals May Boost Breast Cancer Risk
5. Exposure to 3 classes of common chemicals may affect female development
6. Chemicals in Beauty Products Tied to Early Puberty in Girls
7. Two New Phytochemicals with Anti-Inflammatory Activity Found in Noni Fruit
8. Selenium Helped Cells Reboot After Exposure to Cancer-Causing Chemicals
9. Prenatal exposure to endocrine-disrupting chemicals linked to breast cancer
10. Endocrine-disrupting chemicals pose cancer risk
11. Natural Chemicals Act As Cancer Killers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Chemicals that eased one environmental problem may worsen another
(Date:10/12/2017)... , ... October 12, 2017 , ... ... to meet the demand of today’s consumer and regulatory authorities worldwide. From Children’s ... experts and tested to meet the highest standard. , These products are ...
(Date:10/12/2017)... ... , ... Asante, a nationally recognized health system in southern ... home health joint venture through an agreement, effective October 1, 2017, to create ... health company with Asante, delivering clinically integrated care, for the past eight years. ...
(Date:10/12/2017)... , ... October 12, 2017 , ... HMP , ... recipient of a 2017 Folio Magazine Eddie Digital Award for ‘Best B-to-B Healthcare Website.’ ... on October 11, 2017. , The annual award competition recognizes editorial and design excellence ...
(Date:10/12/2017)... ... October 12, 2017 , ... Women-owned and ... 2017 Best and Brightest in Wellness® by Best and Brightest. OnSite Wellness will ... Friday, Oct. 20 from 7:30 a.m. to 2 p.m. at the Henry Autograph ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... the latest in wound care advancements to physician colleagues, skilled nursing facility medical ... titled, "Navigating the Treacherous Waters of Wound Care." , "At many of these ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... , Oct. 2, 2017 The Rebound mobile app ... struggle to reverse the tide of prescription drug addiction. The ... their medicine intake and stepping down their dosage in a ... launch in December 2017; the first 100,000 people to sign ... at http://www.rebound-solution.com/ ...
(Date:9/27/2017)... for their devotion to personalized service, SMP Pharmacy Solutions announces ... the South Florida Business Journal,s 50 Fastest-Growing Companies, and listed ... national specialty pharmacy has found its niche.  To that end, ... honored by SFBJ as the 2017 Power Leader in Health ... his award in October, Bardisa said of the three achievements, ...
(Date:9/25/2017)... PROVIDENCE, R.I. , Sept. 25, 2017 /PRNewswire/ ... immunogenicity assessment, vaccine design, and immune-engineering today announced ... focused on the development of personalized therapeutic cancer ... and has provided exclusive access to enabling technologies ... MSc Eng., MBA will lead EpiVax Oncology as ...
Breaking Medicine Technology: