Via Laura Leslie…
Monday: Smoking Ban Update — North Carolina Public Radio WUNC
Late-breaking news: According to Greensboro’s Mark Binker, all systems are NOT go for a vote tomorrow. It turns out proponents of the ban may have miscounted a nose or two. The bill is conspicuously absent from Tuesday’s House calendar. Too close to call? Yep. Read Mark’s update here.
Oh well, let’s see what happens…
Important research coming out of NY. See here for previous PFOA posts. Perfluorinated compounds are used in the manufacture of Teflon, and are bioaccumulative. The theory is that the salts left over in the manufacture (residuals) are offgassing during use, and exposing consumers to bioaccumulative compounds.
Cast Iron, anyone!!
Fluoropolymer dispersions are used for coating certain cookware products and food-contact packaging to impart oil and water repellency. Since salts of perfluorooctanoic acid (PFOA) are used as a processing aid in the manufacture of many fluoropolymers, it is necessary to determine if these compounds are still present as residuals after the process used to coat nonstick cookware or packaging, and could be released during typical cooking conditions. In this study, we identified and measured perfluoroalkyl carboxylates (PFCAs), particularly PFOA, and fluorotelomer alcohols (FTOHs; 6:2 FTOH and 8:2 FTOH), released from nonstick cookware into the gas phase under normal cooking temperatures (179 to 233 C surface temperature). PFOA was released into the gas phase at 7-337 ng (11-503 pg/cm2) per pan from four brands of nonstick frying pans. 6:2 FTOH and 8:2 FTOH were found in the gas phase of four brands of frying pans, and the sources of FTOHs released from nonstick cookware are under investigation. We observed a significant decrease in gas-phase PFOA following repeated use of one brand of pan, whereas the other brand did not show a significant reduction in PFOA release following multiple uses. PFOA was found at >5 ng during the fourth use of both brands of pans. FTOHs were not found after the second use of either brand of pans. PFOA was found at 5-34 ng in the vapors produced from a prepacked microwave popcorn bag. PFOA was not found in the vapors produced from plain white corn kernels popped in a polypropylene container. 6:2 FTOH and 8:2 FTOH were measured in the vapors produced from one brand of prepacked microwave popcorn at 223 ± 37 ng and 258 ± 36 ng per bag, respectively, but not measured at >20 ng (LOQ) in the other two brands. On the packaging surface of one brand of microwave popcorn several PFCAs, including C5-C12, 6:2 FTOH, and 8:2 FTOH, were found at concentrations in the order of 0.5-6.0 ng/cm2. This study suggests that residual PFOA is not completely removed during the fabrication process of the nonstick coating for cookware. They remain as residuals on the surface and may be off-gassed when heated at normal cooking temperatures.
More later.
Well, turns out all that China baiting was for naught, because right in America’s heartland, Ohio, some feed manufacturer was using melamine as a binding agent.
Melamine From U.S. Put in Feed – New York Times
Ever since pet food contaminated with an industrial chemical was traced to shipments of wheat flour from China, American officials have concentrated on cracking down on imports.
It turns out the problem was closer to home, too.
Yesterday, federal officials announced that a manufacturing plant in Ohio was using the same banned substance, melamine, to make binding agents that ended up in feed for farmed fish, shrimp and livestock.
Apparently, it is Tembec, a Canadian company with a plant in Ohio. I am sure the effects to humans are not significant, but where’s the control? Where’s the list of things you can’t put in food. More importantly, where’s the list of things you’re allowed to put in? Food being a very easy mode of pollutant ingestion, the ingredients list must be exclusionary, that is, only approved ingredients are allowed. If something is not approved, it is not allowed…
Critical Windows of Development is a timeline of how the human body develops in the womb, with animal research showing when low-dose exposure to endocrine disrupting chemicals during development results in altered health outcomes.
Critical Windows of Development
This promises to be an easy to use database showing development timelines of infants, and the documented effects of endocrine disrupting chemicals at these timelines. The prime focus is bisphenol A and phthalates at this point in time. The Environmental Health News has more about the program here. It is not out for public consumption yet, so stay tuned…
Does put recycling in context…
Independent Online Edition > Environment
Regardless of how carefully you separate your waste, there is a good chance a disposal firm will dump it all in together with other kinds of plastic trash and ship it to the developing world to be dealt with by a family of migrant workers earning a pittance. They will deal with the salad-bar container, the pistachio ice-cream container and the superfluous bag for carrots in your shopping basket in a variety of different ways – it may be recycled, it may become landfill or it may simply be burnt. Whatever happens, it is generally not a priority for the waste disposal company. Britain dumps around two million tonnes of waste in China every year, everything from plastic mineral water bottles to shopping bags and other forms of superfluous packaging from some of the country’s biggest supermarkets.
Same for India as well. The article says that all of this “recycling” is illegal. But how do you hide 200,000 tonnes of plastic waste?
Read the whole article, it is tragic. Some highlights:
So too are the many and varied health complaints suffered by the local population, who risk multiple skin ailments and exposure to potent carcinogens as they touch the contaminated materials. Poisonous chemical effluents stream into their water supply, turning it black or lurid red, and studies by Greenpeace show that acid rain is the norm in this region. Children are prone to fevers and coughs. Their skin is often disfigured by the toxic plastic waste they have to process.
A report by the University of Shantou on the town of Guiyu, another Guangdong recycling hub, showed that more than 80 per cent of local children suffer from lead poisoning.
The next time Giuliani tries to take credit for the decrease in violence during his tenure as NYC’s mayor, send him this chart.
The NY Times shines some light on Jessica Reyes’ excellent work linking decreased lead exposure to a drop in violent crime in the US. The decreased lead exposure, of course, was from the phase-out of leaded gasoline from the American market. BTW, Nascar still uses leaded gasoline in its cars, nice going, guys.
The answer, according to Jessica Wolpaw Reyes, an economist at Amherst College, lies in the cleanup of a toxic chemical that affected nearly everyone in the United States for most of the last century. After moving out of an old townhouse in Boston when her first child was born in 2000, Reyes started looking into the effects of lead poisoning. She learned that even low levels of lead can cause brain damage that makes children less intelligent and, in some cases, more impulsive and aggressive (Emphasis Added).
Lead exposure at an early age (2-3 years) is especially significant as this is an age where personality development occurs and any interference in neuron development and apoptosis (death!) can cause permanent changes in personality. This excellent review article summarizes the effects of lead on neuronal development.
Reyes’ research mentions that while decreased lead exposure was very well correlated with violent crime (accounting for 56% of the reduction in crime), no correlation was found to property crimes (such as theft). This of course makes intuitive sense. A property crime is usually premeditated whereas violence is usually impulsive (excluding serial killers, of course). It is more likely that a budding criminal sets out to steal a car than to beat somebody to pulp. It is when the crime goes wrong that the probability of a violent crime increases. An individual with damaged impulse control is then more likely to seek a violent way out of the bad situation.
Our society (like most) views violent crime as a moral issue, a matter of good and evil that is determined by your “character”. So, a simple chemical correlator to violent crime that can explain a majority of the commission of violent acts goes a long way in undermining this whole notion of morality and crime. Of course, there are other sociological factors at play which need to be addressed. But it is heartening to know that beyond all the complicated and recalcitrant social issues that underly crime, there’s a ubiquitously evil pollutant lurking that can be eliminated. I am guessing that this line of reasoning is not going to be very popular among the “tough on crime” types that perpetrate our political airwaves these days.
Reference
Reyes, Jessica Wolpaw (2007) “Environmental Policy as Social Policy? The Impact of Childhood Lead Exposure on Crime,” The B.E. Journal of Economic Analysis & Policy: Vol. 7 : Iss. 1 (Contributions), Article 51.
More Bisphenol A blowback, apparently, SF parents are switching to glass.
Glass baby bottles making comeback / Stores selling out after health alarms raised about plastics
Glass baby bottles, replaced decades ago by unbreakable plastic, are making such a comeback that parents can’t get their hands on them.
Online and brick-and-mortar retailers report a run on glass baby bottles in recent weeks that they say was spurred by reports that the most common type of plastic in baby bottles may leach a toxic chemical.
San Francisco resident Sean Mullins said he decided to switch his 6-month-old son, Mickey, from plastic to glass bottles last month despite manufacturers’ insistence that plastic bottles are safe.
Independent tests done for The Chronicle and reported in November found bisphenol A, a chemical that mimics estrogen, in a baby bottle and several toys. Bisphenol A is also found in the lining of food cans, some anti-cavity sealants for teeth, and electronics.
Watch for plastics manufacturers to fight back, this study ought to provide some ammo.
Comparison of six samples of each of three brands of water available in both glass and polyethyelene terephthalate (PET(E)) showed that the waters bottled in glass contained approximately 57, 30, and 26 times more Pb due to leaching from the containers. Our study includes 25 brands of bottled water from Canada, and the median Pb concentration in these samples was 15.9 ng/L (n = 25), with a range from 2.1 to 268 ng/L. For comparison with the bottled waters, pristine groundwater from six artesian flows in southern Ontario, Canada, where some of the bottled waters originate, yielded a median concentration of 5.1 ng/L Pb (n = 18). In fact, all of the waters tested were well below the maximum allowable concentration established by the EU, Health Canada, and the WHO for Pb in drinking water (10000 ng/L).
It all depends on which bolded sentence you chose to emphasize! So, glass bottles do leach some lead out, but nowhere near the amount needed to cause any effects whatsoever. I guess this is all the American Chemistry Council can come up with as a problem with glass.
It’s irrefutable that glass can shatter, Hentges said. But there is “no scientific basis to conclude that BPA is something to be concerned about … at the extremely low levels that people might be exposed to from use of consumer products.”
There is plenty of scientific basis to conclude that Bisphenol A has some very subtle effects at ambient doses. But science has never stopped the American Chemistry Council!