July 7, 2021 - Viktor Yushchenko, the apparent winner of Ukraine’s Dec. 26 presidential election, is believed to have been poisoned with dioxins. Robert Lawrence, MD, associate dean and the Edyth Schoenrich Professor of Preventive Medicine at the Bloomberg School of Public Health, chaired an Institute of ...

Extensive laboratory, bench and pilot scale research highlights the role chlorine plays under carefully controlled, high concentration conditions. Commercial data, more than 1,900 tests, however, indicate that there is no strong relationship between chlorine feed and flue gas PCDD/. The majority ...

ATSDR developed this Completed Exposure Pathway List to track the substances to which people have been exposed at hazardous waste sites. It was updated as part of the Priority List of Hazardous Substances for 2001.

Dioxins are mainly byproducts of industrial practices. They are produced through a variety of incineration processes, including improper burning of municipal waste or other trash, and can be released into the air during natural processes, such as wildfires and volcanoes.

It is well known that PCDD/F are always formed during wood combustion via precursors like phenols and lignin or via de novo reactions in the presence of particulate carbon and chlorine [2]. As can be seen from Table 2 [7], when waste wood is burnt, the level of dioxins and furans in the flue ...

There is broad scientific agreement that dioxins and furans are among the most toxic chemical compounds known. Furans are chemically similar to dioxins and generally exert the same types of toxic effects. Bill Moyers had the highest overall levels of dioxin-like compounds in his test group.

August 17, 2021 - The most commonly encountered POPs ... dibenzo-p-dioxins (CDDs) and dibenzofurans. [5,6] CDD’s are highly toxic compounds that are created during combustion processes, especially structure fires where PVC, plastics, paper and other chlorinated materials burn....

February 8, 2023 - Neil Donahue, a professor chemistry at Carnegie Mellon University in nearby Pittsburgh, said he worries that the burning could have formed dioxins, which are created from burning chlorinated carbon materials.

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Chlorine is a toxic gas with corrosive properties. It is widely used as bleach in the manufacture of paper and cloth and in manufacturing solvents, pesticides, synthetic rubber, and refrigerants.

Dioxin emission factors for different combustion categories range over five orders of magnitude. Both chlorine (Cl(2)) and transition metals, including copper (Cu) have been suggested to promote the formation of dioxin in incinerators, and sulphur (S) has been suggested to inhibit dioxin formation.

The demands of our society generate wastes that tend to increase in quantity as the standard of living increases. The most effective means of dealing …

Dioxin and dioxin-like compounds are unintentionally created whenever chlorine-based chemicals are produced, used or burned. Evidence suggests that, throughout its entire lifecycle, PVC is responsible for a greater share of the nation's annual dioxin burden than any other industrial product.

A switch to elemental chlorine-free and totally chlorine-free alternatives in the process along with stricter effluent guidelines reduced the amount of dioxin in sludges and effluents. However, the legacy contamination from past manufacturing can be significant in sediment. The biggest contributor of dioxins to the environment is incomplete combustion. Dioxins are emitted to the air as byproduct of waste incineration; the burning ...

March 17, 2023 - Transporting hazardous materials has major risks, so companies are looking into how we make the process safer and more efficient.

Under increased pressure or at temperatures below -30ºF, it is a clear, amber-colored liquid. It is generally shipped in steel cylinders as a compressed liquid. Chlorine is only slightly soluble in water, but on contact with moisture it forms hypochlorous acid (HClO) and hydrochloric acid ...

Chlorine sources, forms and chlorine concentration of combustion materials are considered to be the most important factors influencing the formation o …

The complex multidisciplinary problem posed by PCDD can best be understood by the interaction of scientists from different disciplines. This workshop ...

December 15, 2022 - Chlorine dioxide is a well-established antibacterial and antiviral with relatively low toxicity. Learn its history, safety, and side effects here.

December 12, 2019 - Concerns have been raised about the potential emission of dioxins from PVC incineration, particularly from municipal waste but also from PVC production plants. However, due to strict regulation and improved production technologies the problem has nearly been eradicated. When an organic substance is incinerated in the presence of chlorinated ...