In the 70s, DuPont started to use perfluoroalkyl substances, or PFAS, to make Teflon and Scotchgard, that amazing thing that allowed those perfect eggs to be a part of every kitchen. They can also be dispersed through air and water and have been found in the environment of the Arctic (and its polar bears) and open ocean waters. [69] The most important emission sources are carpet and textile protection products, as well as fire-fighting foams.[70]. PFOS and PFOA inhibit the secretion of steroid hormones in both theca cells and granulosa cells with gonadotropic stimulus. There is a positive exposure-response trend for cancer incidence and PFOA serum levels. This time he asked the company to turn over all documents related to C8. Chemours is currently under legal pressure for alleged GenX contamination around its North Carolina facility, and is currently under a state consent order that includes a $12m fine and requirements to accelerate clean-up efforts. These chemicals include bisphenol A (BPA), formaldehyde and several flame retardants—all of which have since been found to present significant risks to human health and the environment. [11] Because PFAS are ubiquitous in households, consumer products, food, and the environment generally, some trace levels reflecting this ubiquitous broad use of these compounds will make their way into the wastewater and solid waste streams.
In a new study, I looked at the makeup of communities in Houston that aren't in the 100-year flood zone, but that still flood. [103] One study showed significant positive associations were recognized between dust ingestion and PFOA serum concentrations. [31] Since each addition produces a new teleomer, fluorotelomers like these form with varying length chains containing an even number of carbon atoms, depending on reaction conditions. “The Council's study indicates the high-priority need for a program of testing and control of toxic substances," it said as it released a 1971 report calling for new chemical rules. We don't think anything about it. Consider what the world of media would look like without The Intercept.
Because we have to pass that onto the customer. In one case, in Shimizu in 2008, a worker had a blood level of 8,370 parts per billion (ppb).
The Devil We Know tells the story of DuPont knowingly poisoning the water supply in West Virginia and is available on Netflix.
DuPont scientists then conducted tests on humans, asking a group of volunteers to smoke cigarettes laced with C8. Retrospective yearly PFOA serum levels were estimated for each subject from 1952 through 2011. PFOA has spread throughout the world. In addition to research findings, copies of internal emails and documents included in this cache were especially illuminating. [57] In humans, PFOA has an average elimination half-life of about 3 years. The drinking water of about 16 million Americans, including 126 military bases, where PFAS-rich firefighting foam is used for training exercises. The outcome of PFOA serum level was log-transformed due to the scarcity of very high cumulative exposure values. In Dordrecht in 2005, another worker was recorded with 11,387 ppb. Workers were at similarly elevated risk for kidney cancer and for non-cancer kidney diseases.
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The study linked C-8 to multiple health problems from cancer to reduced immune function.
The results are consistent with previous mortality analyses performed using DuPont data.
Only now are these coverups coming to the surface and we are beginning to understand the PFAS fallout in which we are starting to experience. This is only 30 percent of the EPA’s water samples overall and Eaton claims that large amounts of chemicals were ignored by design. [167][168], PFOA was proposed for listing under the Stockholm Convention on Persistent Organic Pollutants in 2015, and on May 10, 2019, PFOA, its salts, and PFOA-related compounds were added to Annex A of the Stockholm Convention by the Conference of the Parties.[169][170].
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