latest news: Greenhouse/Ozone Gases
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Greenhouse gas rules target computer chip makers
SACRAMENTO — California’s ambitious law to curb global warming took aim at the computer chip industry Thursday, as regulators adopted rules to force semiconductor makers to cut greenhouse gas emissions by more than half by 2012. The vote by the California Air Resources Board is among early steps state officials are taking to comply with […]
Greenhouse/Ozone Gases -
Environmental hazards and health risk of common liquid perfluoro-n-alkanes, potent greenhouse gases
Abstract This article aimed at introducing the main physical properties and commercial/industrial uses of common liquid perfluoro-n-alkanes (including perfluoropentane, perfluorohexane, perfluoroheptane, perfluorooctane, and perfluorononane) and the environment and health hazards posed by their toxic decomposition products (especially in hydrogen fluoride and perfluoroisobutylene) because these perfluorocompounds are potent greenhouse gases, which have been blanketed into the […]
International Greenhouse/Ozone Gases Perfluorinated chemicals -
Sulfuryl fluoride: Termite Insecticide Found To Be Potent Greenhouse Gas
An insecticide used to fumigate termite-infested buildings is a strong greenhouse gas that lives in the atmosphere nearly 10 times longer than previously thought, UC Irvine research has found. Sulfuryl fluoride, UCI chemists discovered, stays in the atmosphere at least 30-40 years and perhaps as long as 100 years. Prior studies estimated its atmospheric lifetime […]
Greenhouse/Ozone Gases -
HFO-1234yf: New Refrigerant Takes Heat
TO RALLY public opinion against fluorine-based refrigerants, a German environmental group has recorded a car crash and staged a series of tests purporting to prove that a newly developed automotive refrigerant is both flammable and lethal. Much to the consternation of the refrigerant’s makers – Honeywell Speciality Materials, DuPont, and Arkema – the crash and […]
European Union Greenhouse/Ozone Gases -
NF3: The greenhouse gas that nobody knew
When industry began using NF3 in high-tech manufacturing, it was hailed as a way to fight global warming. But new research shows that this gas has 17,000 times the warming potential of carbon dioxide and is rapidly increasing in the atmosphere – and that’s turning an environmental success story into a public relations disaster. Hypothetical […]
Greenhouse/Ozone Gases -
NF3: Potent Greenhouse Gas More Prevalent in Atmosphere than Previously Assumed
A powerful greenhouse gas is at least four times more prevalent in the atmosphere than previously estimated, according to a team of researchers at Scripps Institution of Oceanography at UC San Diego. Using new analytical techniques, a team led by Scripps geochemistry professor Ray Weiss made the first atmospheric measurements of nitrogen trifluoride (NF3), which […]
Greenhouse/Ozone Gases -
‘Unbreakable’ greenhouse gas meets its doom at last
The war on climate change just got a chemical weapon: a way to destroy the carbon-fluorine bonds that make a class of widely used industrial gases so dangerous in the atmosphere. Gases made from carbon, fluorine and chlorine, called chlorofluorocarbons (CFCs), long used as refrigerants, were banned in the 1990s because they damage the ozone […]
Greenhouse/Ozone Gases -
Neutralizing Fluorocarbons
Fluorocarbons–common chemicals in which carbon is bound to fluorine–are potent greenhouse gases, and some form toxic compounds that can accumulate in the environment. But neutralizing fluorocarbons has required a process whose high temperature drives up its cost, limiting its adoption. Researchers at Brandeis University report in Science today that they have found a catalyst that […]
Greenhouse/Ozone Gases -
Nitrogen trifluoride (NF3): Calls to monitor potent greenhouse gas
A new study indicates that the environmental levels of nitrogen trifluoride (NF3), a powerful greenhouse gas, should be monitored. NF3 was missed out of the last Kyoto protocol in 1997 as it as it was only made in small amounts for niche markets such as rocket fuel and lasers. But since then use of the […]
Greenhouse/Ozone Gases -
Nitrogen trifluoride: Environment: Climate risk from flat-screen TVs
The rising demand for flat-screen televisions could have a greater impact on global warming than the world’s largest coal-fired power stations, a leading environmental scientist warned yesterday. Manufacturers use a greenhouse gas called nitrogen trifluoride to make the televisions, and as the sets have become more popular, annual production of the gas has risen to […]
Greenhouse/Ozone Gases