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Title: Polychlorinated dibenzo-para-dioxins and dibenzofurans / published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organisation, and the World Health Organization
Issue Date: 1989
Publisher: Geneva : World Health Organization
Language: English
Abstract: Evaluates the risks to human halth and the environment posed by exposure to polychlorinated dibenzo-para-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). These compounds, which are not produced intentionally, are formed as an undesired side reaction during the manufacture of a number of chemical products used extensively as insecticides, herbicides, fungicides, mold inhibitors, antiseptics, disinfectants, and wood preservatives. These compounds are also unintentionally formed during a variety of incineration reactions. A section devoted to sources of environmental pollution traces most of the presence of these compounds in the environment to the use of contaminated chemicals and, most notably, to products prepared from 2,4,5-trichlorophenol. Particular attention is given to incidents of heavy environmental pollution resulting from industrial accidents, as occurred at a factory near Seveso in Northern Italy, from improper disposal of industrial waste, as occurred in Missouri and in Love Canal, USA, and from the heavy use of contaminated chemicals, as occurred at a US Air Force base during the testing of aerial spraying equipment for operations using Agent Orange. The greatest part of the book evaluates the extensive body of data linking these compounds, and especially the PCDD 2,3,7,8-tetrachloro-dibenzo-p-dioxin, to adverse effects on health. The assessment also draws upon studies following industrial accidents, mass outbreaks of poisoning caused by consumption of contaminated rice oil in Japan and Taiwan, and the widespread use of contaminated Agent Orange in Viet Nam. Despite the number of clinical and follow-up studies, and despite the high incidence of hepatocellular carcinoma observed in some animal species, the report concludes that, for occupational and accidental exposures, no clear-cut persistent systemic effects other than chloracne have been observed. Uncertain
Description: Summary, evaluation and recommendations in French and Spanish
409 p.
Subject: Dioxins
Context: adverse effects toxicity
metadata.dc.subject.other: Chemical Toxicology and Carcinogenicity
Other Identifiers: 9241542888
5225019226 (Russian)
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