Search Results
15086 Results for "lead"
Partial lead pipe replacement fails
—Partial lead pipe replacement fails “Partially replacing lead pipes increases lead in household drinking water” Getting rid of lead pipes in drinking water systems seems like a good idea, but in some cases doing something may be worse than doing nothing at all. In a new study, researchers found that when a city replaced only portions of the lead pipes connecting homes to water mains, lead levels in the water doubled immediately and remained elevated for six months (Environ.
by Melissae Fellet | July 14, 2016
PPG will remove lead from paint
Numerous lead-containing chemicals have found their way into paints over the years, says Ronald Lewarchik, who runs the coatings consulting firm Chemical Dynamics. Lead carbonate was once added for whiteness and opacity. Lead octoate and lead 2-ethylhexanoate are still used in some countries as driers in oil-based paints. The U.S. banned lead in consumer paints in 1978, but the metal continues to be allowed in industrial paints. And many developing countries don’t regulate lead at all, according to Occupational Knowledge International, an environmental group that pushed PPG to eliminate lead. PPG says it does not use lead in its consumer paints anywhere in the world. A small number of its nonconsumer products contain lead, and the company says it is committed to reformulating them by 2020. Most challenging to remove, Lewarchik says, will be lead-based pigments such as lead chromate, which imparts a bright yellow, and lead chromate/oxide cocrystal, also known as chrome orange.
by Michael McCoy | April 29, 2016
Advertisement
Lead makers fight to stay in batteries
Lead-carbon batteries, which feature a lead anode and a carbon cathode, are used because they provide more rapid charging than all-lead batteries and avoid lead sulfate buildup on the cathode. Two recent demonstrator projects by the Advanced Lead Acid Battery Consortium (ALABC), a program run by the International Lead Association (ILA), a trade association, show that a 48-V lead-carbon battery used with a mild hybrid works effectively to reduce carbon dioxide emissions in diesel cars by 15–20%.
by Alex Scott | March 07, 2016
Advertisement
U.S. EPA lowers lead dust exposure levels
EPA Administrator Scott Pruitt has said that lead exposure is a priority at the agency, though most of his public statements focus on lead in drinking water rather than childhood exposure though paint. “Lead-contaminated dust from chipped and peeling lead-based paint is one of the most common causes of elevated blood lead levels in children,” Pruitt said in a statement announcing the lower levels. “Strengthening the standards for lead in dust is an important component of EPA’s strategy to curtail childhood lead exposure.” In 1978, EPA banned lead in residential paints, but it is still allowed in industrial paints. Lead is common in paints worldwide, especially in developing countries. /environment/US-EPA-lowers-lead-dust/96/i27 20180630 Concentrates 96 27 /magazine/96/09627.html U.S. EPA lowers lead dust exposure levels Regulation, EPA, lead, paint con govpol Andrea Widener environment /content/dam/cen/96/27/09627-polcon1-window.jpg The limit on lead dust from windows like this one in Baltimore would be lowered under a new EPA proposal. Lloyd Fox/TNS/Newscom Chipping lead paint on 1035 E. Oliver Street in Baltimore, MD. regulation EPA lead paint lead dust EPA lowers lead dust exposure levels Chemical & Engineering News U.S. EPA lowers lead dust exposure levels U.S. EPA lowers lead dust exposure levels
by Andrea Widener | June 30, 2018
A ‘war on lead’ may be on the horizon
—A ‘war on lead’ may be on the horizon “” The U.S. Environmental Protection Agency will have lead in drinking water on its radar in 2018, according to Administrator Scott Pruitt. At a hearing for the Environment Subcommittee of the House Energy & Commerce Committee on Dec. 7, 2017, Pruitt described lead in drinking water as “one of the greatest environmental threats we face as a country.”
by Michael Torrice | January 15, 2018
Lead pollution approaches natural background levels
—Lead pollution approaches natural background levels “A study of northern Alberta peat bogs indicates that lead emissions controls have been successful” Humans have a 3,500-year history of emitting neurotoxic lead into the atmosphere from mining, using leaded gasoline, and other activities. But efforts in the past several decades to reduce lead emissions have worked well, confirms a study of peat bogs in northern Alberta (Geophys.
by Jyllian Kemsley | October 10, 2016