Navigation Links
Chemicals that eased one environmental problem may worsen another
Date:3/3/2010

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 biology news :

1. Green tea boosts production of detox enzymes, rendering cancerous chemicals harmless
2. NAS report offers new tools to assess health risks from chemicals
3. Chemicals used as fire retardants could be harmful, UC-Riverside researchers say
4. New regulations tighten controls on restricted chemicals
5. Detecting dangerous chemicals with lasers, exploring the brains circuitry with light and more
6. Do chemicals in the environment affect fertility?
7. Holistic understanding: Ag chemicals in the environment
8. Research yields pricey chemicals from biodiesel waste
9. Toxic chemicals found in common scented laundry products, air fresheners
10. Caltech researchers find dual-use sexual attraction and population-control chemicals in nematodes
11. Iowa State wins $18.5M grant to create NSF Center for Biorenewable Chemicals
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Chemicals that eased one environmental problem may worsen another
(Date:4/11/2017)... April 11, 2017 NXT-ID, Inc. (NASDAQ: ... company, announces the appointment of independent Directors Mr. Robin ... its Board of Directors, furthering the company,s corporate governance and ... Gino Pereira ... look forward to their guidance and benefiting from their considerable ...
(Date:4/5/2017)... , April 5, 2017 Today HYPR ... that the server component of the HYPR platform is ... providing the end-to-end security architecture that empowers biometric authentication ... HYPR has already secured over 15 million users across ... manufacturers of connected home product suites and physical access ...
(Date:4/3/2017)... April 3, 2017  Data captured by ... platform, detected a statistically significant association between ... to treatment and objective response of cancer ... to predict whether cancer patients will respond ... as well as to improve both pre-infusion potency ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... ... May 23, 2017 , ... A recent survey conducted by ... and difficult to control weed in 12 categories of broadleaf crops, fruits and vegetables, ... scientists across the U.S. and Canada participated in the 2016 survey, the second conducted ...
(Date:5/23/2017)... ... May 22, 2017 , ... ... 2017 in San Diego, California, this August will feature high-level speakers on ... autonomous vehicles. , SPIE Optics and Photonics, the largest multidisciplinary optical sciences meeting ...
(Date:5/23/2017)... San Diego, CA (PRWEB) , ... May 23, 2017 , ... ... extracellular matrix of polymeric molecules, can cause diverse pathologies ranging from food poisoning and ... economic impact of biofilms is in the tens of billions of dollars per year, ...
(Date:5/22/2017)... ... 2017 , ... Baltimore biotech firm, PathSensors, announced that its ... developing and issuing recommendations to grow Maryland's biohealth industry and position the state ... , The recommendations are contained in a report from the Maryland ...
Breaking Biology Technology: