—Pollutants Boost Lead Paint Hazard “Environmental Chemistry: Auto emissions could contribute to lead exposure from household paint” Two pollutants linked to transportation emissions react with surfaces coated with lead-based paint and increase release of lead pigments, a new study shows (Env. Sci.
by Carmen Drahl | October 26, 2009
EPA requires drinking water utilities to take steps to cut lead when amounts rise above 15 ppb. The standard solution for Green Bay, according to EPA’s 27-year old Lead & Copper Rule, should have been simple: Adjust the water’s pH and buffering capacity and maybe add a corrosion inhibitor, such as orthophosphate, to inhibit lead’s leaching from lead-containing pipes, solder, and fixtures.
by Janet Pelley, special to C&EN | November 21, 2018
—CPSC On Lead In Books, Textiles “” The Consumer Product Safety Commission has issued its final determination on which products it will regulate for lead contamination. The Aug. 26 Federal Register rule lists a number of products that the agency has determined do not exceed the new lead standard and will not have to be certified as lead-free in children's products as required by the 2008 Consumer Product Safety Improvement Act (C&EN, Feb. 9, page 28). In particular, CPSC has determined that textiles, in general, do not contain lead, and they will not have to be certified lead-free. Books also will get a pass because lead has not been used in making papers, inks, or binders for many years. Old books, however, which may have lead in paper or illustration inks, will be the topic of a separate policy statement, CPSC said. /articles/87/i36/CPSC-Lead-Books-Textiles.html 20090907 Concentrates 87 36 /magazine/87/8736.html CPSC On Lead In Books, Textiles Lead, Safety, Children con govpol David J. Hanson environment CPSC On Lead In Books, Textiles Chemical & Engineering News CPSC On Lead In Books, Textiles CPSC On Lead In Books, Textiles
by David J. Hanson | September 07, 2009
—Getting The Lead Out Of Primary Explosives “A new compound, potassium 1,1´-dinitramino-5,5´-bistetrazolate, shows exceptional potential as a replacement for lead azide” Working with explosives is tricky business, so a small amount of sensitive primary explosive is usually used to ignite a more stable secondary explosive.
by Bethany Halford | July 14, 2014
—New US limit on lead dust not what the doctor ordered “The EPA strengthens regulations for lead paint cleanup but doesn’t use the latest science to protect children from lead poisoning” The US Environmental Protection Agency (EPA) on June 17 proposed tightening its standard for how much lead dust can be left on floors after contractors remove lead paint from homes and childcare centers.
by Janet Pelley, special to C&EN | July 01, 2020
—Lead Binding Reexamined “Trigonal pyramidal coordination to sulfur may be key to mechanism of lead poisoning” BIOCHEMISTRY Lead poisoning may be due to an unanticipated coordination geometry for lead in sulfur-rich sites, a new study suggests. In the past decade, biologists have found evidence that low levels of lead can cause developmental disorders in children by disrupting the function of regulatory proteins called transcription factors.
by DAVID BARRY | June 27, 2005
The Article About lead tries to prove that low-level environmental lead exposure results in criminal brain activity. As demonstrated in the article, misinformation, disinformation, and media hype exist concerning very low level exposures to lead. I was one of 60 international lead experts invited to the Environmental Protection Agency’s airborne criteria document committee meetings in the early 1980s.
May 05, 2014