Dioxin
Heterocyclic Compound
Hidden poison: San Jacinto River's submerged toxic dumps must be secured, and soon...be secured, and soon Since 2005, state and federal environmental officials have known the source of dangerous levels of the carcinogen dioxin originating in the San Jacinto River and contaminating seafood harvested from northern Galveston... In this article: San Jacinto River, Gene Green, EPA, Dioxin, Waste Management, Galveston Bay, Industrial waste, Pollution, and Environmental Protection Agency |
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Midland Daily News | 1 day ago
EPA: Water systems dioxin free
In other news, the EPA said samples from the Riverside Boulevard neighborhood that had extensive dioxin cleanup take place show some dioxins have returned to the properties as a result of flooding. Concentrations found in samples from...
In this article: EPA, Bay City, Saginaw, Furan, U.S. Army Corps of Engineers, and The Dow Chemical Co.
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The Australian | 2 days ago
Bay of Plenty: Dioxin Levels Not a Direct Concern
...Bay of Plenty's sample of an area of exposed black sediment taken from the Matata Lagoon works last month has confirmed positive for dioxin as expected based on previous sampling information, however the level does not present a direct...
In this article: Due process
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EPA says Midland, Saginaw and Bay City water supplies are free of dioxin and furan contamination
...5 said today that results from a second round of samples collected from the Midland, Saginaw and Bay City water supply systems show no dioxin or furan contamination. EPA rejected a previous round of unusable samples in early October due to...
In this article: EPA, Furan, Bay City, Saginaw, U.S. Army Corps of Engineers, and Saginaw River
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Guardian | 4 days ago
Letters: Causes of Falluja's birth defects
...to Agent Orange. The US army, which used it as a defoliant, denied the connection but eventually we found out that it contained dioxin, which causes mutations. What genetically "harmless" adjuvant will be found to be the cause of the...
In this article: Uranium, Falluja, US, Agent Orange, Defoliant, BBC News, Gulf War, Cancer, and Anencephaly
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Houston Chronicle | 5 days ago
Concerns could delay plan to clear San Jacinto River of dioxins
Plan to scrub free the San Jacinto River of cancer-causing dioxins has skeptics, but all agree something must be done Mike Patch, 30, with his stepson Gavin, said he was unaware when he moved to Channelview this month that the area along...
In this article: EPA, San Jacinto River, Waste, Cancer, Pollution, San Jacinto, and Waste Management
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Taipei Times | November 12, 2009
Toxic ducks spark health scare
...County, yesterday. About 9,000 ducks were slaughtered by the authorities on Wednesday after they were found to have been contaminated by dioxins and heavy metals. PHOTO: CNA Revelations that ducks contaminated with toxic chemical...
In this article: EPA, Kaohsiung, Typhoon Morakot, Zinc, Arsenic, Copper, and Pineapple
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Tuesday reader's view: A lot of hypocrisy
...or how well the study represented people who participate in activities that could lead to elevated dioxin exposures and elevated dioxin blood levels. How many people in the contaminated floodplain did the study include? Was it 14? New...
In this article: EPA, Tittabawassee River, Saginaw River, Saginaw Bay, and Michigan
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Midland Daily News | November 06, 2009
Riverfront landowners share concerns about dioxin cleanup; EPA-Dow agreement discussed
...Co. and Michigan Department of Environmental Quality that will be under public review through Dec. 17. The toxic chemical byproduct dioxin was released into the Tittabawassee River from Dow's Michigan Operations site in Midland, along with...
In this article: EPA and Tittabawassee River
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EPA extends public comment period on dioxin
...extended the public comment period for a proposed agreement with The Dow Chemical Co. to investigate local dioxin contamination. The dioxin cleanup framework was negotiated as an administrative order on consent between Dow, the EPA and the...
In this article: EPA, CAG, Saginaw Valley State University, E mail, and The Dow Chemical Co.
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Chigago Tribune | October 21, 2009
Dow Chemical and dioxins: Cleanup deal's outcome could affect future initiatives
...of concern' include Waukegan Harbor, Grand Calumet River near Chicago The husband of Alice Buchalter, Herbert, had high levels of dioxin in his blood when he died of cancer. They lived near the Dow chemical plant in Midland, Mich. (Tribune...
In this article: EPA, Dow Chemical, Saginaw, Cancer, Tribune, Lisa Jackson, Chicago Tribune, and Tittabawassee River
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Description from Wikipedia:
Dioxin is a heterocyclic, organic, antiaromatic compound with the chemical formula C4H4O2. There are two isomers, 1,2-dioxin (or o-dioxin) and 1,4-dioxin (or p-dioxin). Their chemical structures are shown at right. The ortho isomer 1,2-dioxin is very unstable due to its peroxide-like characteristics. The known properties of 1,4-dioxin are listed in the infobox to the right.
1,4-dioxin can be prepared by cycloaddition, namely by the Diels-Alder reaction.
Dioxin is used as a blanket term for a family of chemical compounds that are formed through combustion, chlorine bleaching and manufacturing processes. The combination of heat and chlorine creates dioxin. Since chlorine is often a part of the earth's environment, natural ecological activity such as volcanic activity and forest fires can lead to the formation of dioxin. Nevertheless, dioxin, a highly carcinogenic and toxic compound, is mostly created by human activity.
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